Document and Entity Information - USD ($) $ in Millions	12 Months Ended
Document and Entity Information - USD ($) $ in Millions	Dec. 31, 2015	Mar. 07, 2016	Jun. 26, 2015
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Trading Symbol	UACL
Entity Registrant Name	Universal Truckload Services, Inc.
Entity Central Index Key	0001308208
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		28,408,900
Entity Public Float			$ 183.1

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 12,930	$ 8,001
Marketable securities	13,431	14,309
Accounts receivable – net of allowance for doubtful accounts of $5,173 and $5,207, respectively	141,275	151,107
Other receivables	15,422	13,856
Due from affiliates	1,924	1,562
Prepaid income taxes		2,719
Prepaid expenses and other	18,122	19,340
Deferred income taxes	6,427	5,386
Total current assets	209,531	216,280
Property and equipment, net	177,189	178,069
Goodwill	74,484	74,484
Intangible assets – net of accumulated amortization of $43,495 and $34,340, respectively	44,665	53,820
Other assets	5,129	6,361
Total assets	510,998	529,014
Current liabilities:
Accounts payable	46,347	57,448
Due to affiliates	3,413	2,896
Accrued expenses and other current liabilities	18,989	22,341
Insurance and claims	21,906	20,704
Income taxes payable	1,045
Current maturities of capital lease obligations	916	1,051
Current portion of long-term debt	61,488	9,593
Total current liabilities	154,104	114,033
Long-term liabilities:
Long-term debt	173,425	225,705
Capital lease obligations, net of current maturities	1,065	1,980
Deferred income taxes	46,840	45,883
Other long-term liabilities	4,483	4,252
Total long-term liabilities	225,813	277,820
Shareholders' equity:
Common stock, no par value. Authorized 100,000,000 shares; 30,884,727 and 30,856,506 shares issued; 28,398,900 and 29,997,784 shares outstanding, respectively	30,885	30,857
Paid-in capital	2,914	2,448
Treasury stock, at cost; 2,485,827 and 858,722 shares, respectively	(50,018)	(14,953)
Retained earnings	149,743	117,913
Accumulated other comprehensive income:
Unrealized holding gain on available-for-sale securities, net of income taxes of $1,015 and $1,642, respectively	1,801	2,888
Foreign currency translation adjustments	(4,244)	(1,992)
Total shareholders’ equity	131,081	137,161
Total liabilities and shareholders’ equity	$ 510,998	$ 529,014

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 5,173	$ 5,207
Intangible assets, accumulated amortization	$ 43,495	$ 34,340
Common stock, par value
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	30,884,727	30,856,506
Common stock, shares outstanding	28,398,900	29,997,784
Treasury stock, shares	2,485,827	858,722
Income tax expense on unrealized holding gain on available-for-sale securities	$ 1,015	$ 1,642

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating revenues:
Transportation services, including related party amounts of $400, $138 and $195, respectively	$ 696,134	$ 769,308	$ 706,998
Value-added services	285,258	284,496	195,086
Intermodal services, including related party amounts of $0, $170 and $9,605, respectively	147,381	137,717	131,408
Total operating revenues	1,128,773	1,191,521	1,033,492
Operating expenses:
Purchased transportation and equipment rent, including related party amounts of $3,347, $930 and $311, respectively	567,558	615,327	560,024
Direct personnel and related benefits, including related party amounts of $23,792, $16,623 and $14,398, respectively	220,653	208,505	178,441
Commission expense	37,844	43,922	39,248
Operating expenses (exclusive of items shown separately), including related party amounts of $1,983, $1,233 and $1,590, respectively	108,523	116,611	79,263
Occupancy expense, including related party amounts of $13,174, $10,472 and $11,352, respectively	27,004	25,063	20,049
Selling, general, and administrative, including related party amounts of $6,418, $3,736 and $3,617, respectively	37,510	42,214	33,046
Insurance and claims, including related party amounts of $17,360, $18,102 and $16,949, respectively	21,413	25,991	19,242
Depreciation and amortization	34,873	33,053	19,686
Total operating expenses	1,055,378	1,110,686	948,999
Income from operations	73,395	80,835	84,493
Interest income	55	46	130
Interest expense	(9,235)	(8,229)	(4,166)
Other non-operating income	790	447	459
Income before provision for income taxes	65,005	73,099	80,916
Provision for income taxes	25,004	27,729	30,344
Net income	$ 40,001	$ 45,370	$ 50,572
Earnings per common share:
Basic	$ 1.37	$ 1.51	$ 1.68
Diluted	$ 1.37	$ 1.51	$ 1.68
Weighted average number of common shares outstanding:
Basic	29,233	30,013	30,064
Diluted	29,235	30,044	30,160
Dividends declared per common share	$ 0.28	$ 0.28	$ 0.14

Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Transportation services, related party amounts	$ 400	$ 138	$ 195
Intermodal services, related party amounts	0	170	9,605
Purchased transportation and equipment rent [Member]
Operating expenses, related party amounts	3,347	930	311
Direct personnel and related benefits [Member]
Operating expenses, related party amounts	23,792	16,623	14,398
Operating expenses [Member]
Operating expenses, related party amounts	1,983	1,233	1,590
Occupancy expense [Member]
Operating expenses, related party amounts	13,174	10,472	11,352
Selling, general, and administrative [Member]
Operating expenses, related party amounts	6,418	3,736	3,617
Insurance and claims [Member]
Operating expenses, related party amounts	$ 17,360	$ 18,102	$ 16,949

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net Income	$ 40,001	$ 45,370	$ 50,572
Other comprehensive income (loss):
Unrealized holding gains (losses) on available-for-sale investments arising during the period, net of income taxes	(1,015)	412	1,546
Realized gains on available-for-sale investments reclassified into income, net of income taxes	(72)		(68)
Foreign currency translation adjustments	(2,252)	(1,631)	(227)
Total other comprehensive income (loss)	(3,339)	(1,219)	1,251
Total comprehensive income	$ 36,662	$ 44,151	$ 51,823

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net Income	$ 40,001	$ 45,370	$ 50,572
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,873	33,053	19,686
Gain on sale of marketable equity securities	(347)		(107)
Other-than-temporary impairment of marketable securities	230
Loss (gain) on disposal of property and equipment	239	233	(117)
Amortization of debt issuance costs	648	693
Write-off of debt issuance costs	1,272
Stock-based compensation	494	1,485	585
Provision for doubtful accounts	3,004	3,504	1,515
Deferred income taxes	478	1,433	2,495
Change in assets and liabilities:
Trade and other accounts receivable	4,424	(19,857)	767
Prepaid income taxes, prepaid expenses and other assets	4,347	984	(3,594)
Accounts payable, accrued expenses, insurance and claims and other current liabilities	(11,695)	13,027	(15,152)
Due to/from affiliates, net	83	(1)	837
Other long-term liabilities	253	(532)	103
Net cash provided by operating activities	78,304	79,392	57,590
Cash flows from investing activities:
Capital expenditures	(26,257)	(59,784)	(17,035)
Proceeds from the sale of property and equipment	816	1,326	1,790
Purchases of marketable securities	(1,159)	(2,063)	(24)
Proceeds from sale of marketable securities	441		520
Acquisitions of businesses		(2,648)	(121,057)
Net cash used in investing activities	(26,159)	(63,169)	(135,806)
Cash flows from financing activities:
Proceeds from borrowing - revolving debt	172,758	134,228	48,218
Repayments of debt - revolving debt	(161,293)	(134,358)	(52,218)
Proceeds from borrowing - term debt	80,000	2,500	95,500
Repayments of debt - term debt	(120,000)	(4,572)
Repayments of debt - equipment facility	(55,428)
Proceeds from borrowing - equipment notes	83,578
Proceeds from borrowing - UBS facility		791
Repayments of debt - UBS facility		(791)
Dividends paid	(8,171)	(8,409)	(4,209)
Payment of capital lease obligations	(1,050)	(1,349)	(42)
Purchases of treasury stock	(35,065)	(5,631)	(6)
Payment of earnout obligations related to acquisitions			(24)
Capitalized financing costs	(1,499)		(1,230)
Net cash (used in) provided by financing activities	(46,170)	(17,591)	85,989
Effect of exchange rate changes on cash and cash equivalents	(1,046)	(854)	(104)
Net increase (decrease) in cash	4,929	(2,222)	7,669
Cash and cash equivalents – beginning of period	8,001	10,223	2,554
Cash and cash equivalents – ending of period	12,930	8,001	10,223
Supplemental cash flow information:
Cash paid for interest	7,649	7,379	3,595
Cash paid for income taxes	$ 21,541	20,833	31,236
Acquisition of businesses:
Fair value of assets acquired, net of cash		1,270	156,741
Liabilities assumed			(33,738)
Fair value of acquisition obligations			(2,196)
Payment of acquisition obligations		1,378	250
Net cash paid for acquisition of businesses		$ 2,648	$ 121,057

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common stock [Member]	Paid-in capital [Member]	Treasury stock [Member]	Retained earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balances at Dec. 31, 2012	$ 57,372	$ 30,685	$ 550	$ (9,316)	$ 34,589	$ 864
Net Income	50,572				50,572
Comprehensive income (loss)	1,251					1,251
Dividends paid	(4,209)				(4,209)
Issuance of common stock		25	(25)
Stock based compensation	585	36	549
Purchases of treasury stock	(6)			(6)
Balances at Dec. 31, 2013	105,565	30,746	1,074	(9,322)	80,952	2,115
Net Income	45,370				45,370
Comprehensive income (loss)	(1,219)					(1,219)
Dividends paid	(8,409)				(8,409)
Issuance of common stock		20	(20)
Stock based compensation	1,485	91	1,394
Purchases of treasury stock	(5,631)			(5,631)
Balances at Dec. 31, 2014	137,161	30,857	2,448	(14,953)	117,913	896
Net Income	40,001				40,001
Comprehensive income (loss)	(3,339)					(3,339)
Dividends paid	(8,171)				(8,171)
Stock based compensation	494	28	466
Purchases of treasury stock	(35,065)			(35,065)
Balances at Dec. 31, 2015	$ 131,081	$ 30,885	$ 2,914	$ (50,018)	$ 149,743	$ (2,443)

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(1)	Summary of Significant Accounting Policies

(a)

Business

Universal Truckload Services, Inc., referred to herein as Universal, or us, we or the Company, through its subsidiaries, is a leading asset-light provider of customized transportation and logistics solutions throughout the United States, and in Mexico, Canada and Colombia. We provide our customers with supply chain solutions that can be scaled to meet their changing demands. We offer our customers with a broad array of services across their entire supply chain, including transportation, value-added, and intermodal services. Our customized solutions and flexible business model are designed to provide us with a highly variable cost.

(b)

Basis of Presentation

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. Effective on December 31, 2014, the Company executed a plan to reduce the number of its subsidiaries, re-naming and re-branding our principal surviving operating subsidiaries. The organizational streamlining plan included the statutory merger of certain subsidiaries, along with the transfer of certain business units between subsidiaries. During the year ended December 31, 2015, we conducted our operation through the following operating and support subsidiaries: Cavalry Logistics, LLC, Diversified Contract Services, Inc., Flint Special Services, Inc., LGSI Equipment of Indiana, LLC, LINC Logistics, LLC, LINC Ontario, Ltd., Logistics Insight Corp., Logistics Insight Corporation S. de R.L. de C.V., Logistics Insight GmbH, Louisiana Transportation, Inc., Mason Dixon Intermodal, Inc., ULINC Staffing de Mexico, S. de R.L. de C.V., Universal Dedicated, Inc., Universal Logistics Solutions International, Inc., Universal Logistics Solutions Canada, Ltd., Universal Management Services, Inc., Universal Specialized, Inc., Universal Truckload, Inc., UT Rent A Car, Inc., UTS Realty, LLC, UTSI Finance, Inc., Westport Holding, LLC, Westport Axle Corporation, and Westport Machining LLC. All significant intercompany accounts and transactions have been eliminated.

Through December 31, 2004, Universal was a wholly-owned subsidiary of CenTra, Inc. On December 31, 2004, CenTra distributed all of Universal’s common stock to Matthew T. Moroun and a trust controlled by Manuel J. Moroun, collectively the Morouns, the sole shareholders of CenTra, Inc. CenTra, Inc., its subsidiaries and affiliates are referred to as “CenTra.” Subsequent to the initial public offering in 2005, the Morouns retained and continue to hold a controlling interest in Universal. The accompanying consolidated financial statements present the historical financial position, results of operations, and cash flows of the Company and are not necessarily indicative of what the financial position, results of operations, or cash flows would have been had the Company operated as an unaffiliated company during the periods presented.

Our fiscal year consists of four quarters, each with thirteen weeks.

Certain immaterial reclassifications have been made to the prior financial statements in order for them to conform to the December 31, 2015 presentation.

(c)

Use of Estimates

The preparation of the consolidated financial statements requires management of the Company to make a number of estimates and assumptions related to the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant items subject to such estimates and assumptions include the fair value of assets and liabilities acquired in business combinations; carrying amounts of property and equipment and intangible assets; marketable securities; valuation allowances for receivables; and liabilities related to insurance and claim costs. Actual results could differ from those estimates.

(d)

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short-term, highly liquid investments with an original maturity of three months or less.

It is our policy to record checks issued in excess of funds on deposit as accounts payable for balance sheet presentation, and include the changes in these positions as cash flows from operating activities in the statements of cash flows. At December 31, 2015, funds on deposit were in excess of checks issues and no reclassification was necessary. At December 31, 2014, accounts payable included reclassification of checks issued in excess of funds on deposit in the amount of $13.4 million. The change in the amount of checks issued in excess of funds on deposit of $(13.4) million, $13.4 million, and $(13.4) million for 2015, 2014

(1)	Summary of Significant Accounting Policies—continued

(d)

Cash and Cash Equivalents - continued

and 2013, respectively, is included in cash flows from operating activities in the statements of cash flows as a change in accounts payable, accrued expenses, insurance and claims, and other current liabilities.

(e)

Marketable Securities

At December 31, 2015 and 2014, marketable securities, all of which are available-for-sale, consist of common and preferred stocks. Marketable securities are carried at fair value, with unrealized gains and losses, net of related income taxes, reported as accumulated other comprehensive income (loss), except for losses from impairments which are determined to be other-than-temporary. Realized gains and losses, and declines in value judged to be other-than-temporary on available-for-sale securities are included in the determination of net income and are included in other non-operating income (expense), at which time the average cost basis of these securities are adjusted to fair value. Fair values are based on quoted market prices at the reporting date. Interest and dividends on available-for-sale securities are included in other non-operating income (expense). During the years ended December 31, 2015 and 2013, we received proceeds of $0.4 million and $0.5 million from the sale of marketable securities with a combined cost of $0.1 million and $0.4 million resulting in a realized gain of $0.3 million and $0.1 million, respectively. The Company did not sell any marketable securities during the year ended December 31, 2014.

The cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities by type were as follows (in thousands):

	Cost		Gross unrealized holding gains		Gross unrealized holding (losses)			Fair Value
At December 31, 2015
Equity Securities	$	10,614	$	3,958	$	(1,141	)	$	13,431
At December 31, 2014
Equity Securities	$	9,779	$	4,825	$	(295	)	$	14,309

Included in equity securities at December 31, 2015 were securities with a book basis of $4.6 million and a cumulative loss position of $1.1 million, the impairment of which we consider to be temporary. We consider several factors in determining as to whether declines in value are judged to be temporary or other-than-temporary, including the severity and duration of the decline, the financial condition and near-term prospects of the specific issuers and the industries in which they operate, and our intent and ability to hold these securities. We may incur future impairment charges if declines in market values continue and/or worsen and impairments are no longer considered temporary.

The fair value and gross unrealized holding losses of our marketable securities that are not deemed to be other-than-temporarily impaired aggregated by type and length of time they have been in a continuous unrealized loss position were as follows (in thousands):

	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
At December 31, 2015
Equity securities	$	3,099	$	987	$	345	$	154	$	3,444	$	1,141
At December 31, 2014
Equity securities	$	1,380	$	197	$	146	$	98	$	1,526	$	295

At December 31, 2015, our portfolio of equity securities in a continuous loss position, the impairment of which we consider to be temporary, consists primarily of common stocks in the oil and gas, banking, communications, steel, and transportation industries. The fair value and unrealized losses are distributed in 35 publicly traded companies, with no single industry or company representing a material or concentrated unrealized loss. We have evaluated the near-term prospects of the various industries, as well as the specific issuers within our portfolio, in relation to the severity and duration of the impairments, and based on that evaluation, and our ability and intent to hold these investments for a reasonable period of time to allow for a recovery of fair value, we do not consider these investments to be other-than-temporarily impaired at December 31, 2015.

(1)	Summary of Significant Accounting Policies—continued

(e)

Marketable Securities—continued

The Company from time to time invests cash in excess of its current needs in marketable securities, much of which is held in equity securities, which are actively traded on public exchanges. It is our philosophy to minimize the risk of capital loss without foregoing the potential for capital appreciation through investing in value-and-income oriented investments. However, holding equity securities subjects us to fluctuations in the market value of our investment portfolio based on current market prices, and a decline in market prices or other unstable market conditions could cause a loss in the value of our marketable securities classified as available-for-sale.

(f)

Accounts Receivable

Accounts receivable are recorded at the net invoiced amount, net of an allowance for doubtful accounts, and do not bear interest. They include unbilled amounts for services rendered in the respective period but not yet billed to the customer until a future date, which typically occurs within one month. In order to reflect customer receivables at their estimated net realizable value, we record charges against revenue based upon current information. These charges generally arise from rate changes, errors, and revenue adjustments that may arise from contract disputes or differences in calculation methods employed by the customer. The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in our existing accounts receivable. We determine the allowance based on historical write-off experience and the aging of our outstanding accounts receivable. Balances are considered past due based on invoiced terms. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. We do not have any off‑balance‑sheet credit exposure related to our customers. Accounts receivable from affiliates are shown separately and include trade receivables from the sale of services to affiliates.

(g)

Inventories

Included in prepaid expenses and other is inventory used in a portion of our value-added service operations. Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out method. Provisions for excess and obsolete inventories are based on our assessment of excess and obsolete inventory on a product-by-product basis.

At December 31, inventory consists of the following (in thousands):

	2015		2014
Raw materials and supplies	$	7,660	$	6,903
Finished goods		962		1,347
	$	8,622	$	8,250

(h)

Property and Equipment

Property and equipment, including leasehold improvements, are carried at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets as follows:

Description		Life in Years
Transportation equipment		5 - 15
Other operating assets		3 - 15
Information technology equipment		2 - 5
Buildings and related assets		10 - 39

The amounts recorded for depreciation expense were $25.8 million, $23.1 million, and $17.6 million for the years ended December 31, 2015, 2014, and 2013, respectively.

Tire repairs, replacement tires, replacement batteries, consumable tools used in our logistics services, and routine repairs and maintenance on vehicles are expensed as incurred. Parts and fuel inventories are included in prepaid expenses and other. We capitalize certain costs associated with vehicle repairs and maintenance that materially extend the life or increase the value of the vehicle or pool of vehicles.

(1)	Summary of Significant Accounting Policies—continued

(i)

Intangible Assets

Intangible assets subject to amortization consist of customer contracts and agent and customer relationships that have been acquired in business combinations. These assets are amortized either over the period of economic benefit or on a straight-line basis over the estimated useful lives of the related intangible asset. The estimated useful lives of these intangible assets range from three to nineteen years. The weighted average amortization period for customer contracts is approximately three years, and the weighted average amortization period for agent and customer relationships is approximately fifteen years. Collectively, the weighted average amortization period of assets subject to amortization is approximately twelve years. The useful lives of acquired trademarks are indefinite and, therefore, not subject to amortization.

Our identifiable intangible assets as of December 31, 2015 and 2014 are as follows (in thousands):

	2015			2014
Indefinite Lived Intangibles:
Trademarks	$	2,500		$	2,500
Definite Lived Intangibles:
Agent and customer relationships		65,060			65,060
Customer contracts		20,600			20,600
Less: accumulated amortization		(43,495	)		(34,340	)
Intangible assets, net	$	42,165		$	51,320
Total Identifiable Intangible Assets	$	44,665		$	53,820

Estimated amortization expense by year is as follows (in thousands):

2016	$	7,423
2017		5,995
2018		2,519
2019		2,254
2020		1,970
Thereafter		22,004
Total	$	42,165

The amounts recorded for amortization expense were $9.2 million, $9.9 million, and $2.1 million for the years ended December 31, 2015, 2014 and 2013, respectively.

(j)

Goodwill

Goodwill represents the excess purchase price over the fair value of assets acquired in connection with the Company’s acquisitions. Under FASB Accounting Standards Codification, or ASC, Topic 350 “Intangibles – Goodwill and Other”, we are required to test goodwill for impairment annually (in our third fiscal quarter) or more frequently, whenever events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit with goodwill below its carrying amount. We have the option to first assess qualitative factors such as current performance and overall economic conditions to determine whether or not it is necessary to perform a two-step quantitative goodwill impairment test. If we choose that option, we would not be required perform Step 1 of the test unless we determine that, based on a qualitative assessment, it is more likely than not that the fair value of a reporting unit is less than its carrying value. If we determine that it is more likely than not, or if we choose not to perform a qualitative assessment, then we may then proceed with Step 1 of the two-step impairment test. In the quantitative goodwill test, a company compares the carrying value of a reporting unit to its fair value. If the carrying value of the reporting unit exceeds the estimated fair value, a second step is performed, which compares the implied fair value of goodwill to the carrying value, to determine the amount of impairment. During the third quarter of 2015, we completed our goodwill impairment testing by performing a quantitative assessment. Based on the results of this test, no impairment loss was recognized.

(1)	Summary of Significant Accounting Policies—continued

(j)

Goodwill—continued

The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 are as follows (in thousands):

Balance as of January 1, 2014	$	74,589
Bull's Eye acquisitions		163
Westport adjustments		(268	)
Balance as of December 31, 2014		74,484
Business acquisitions		—
Balance as of December 31, 2015	$	74,484

At both December 31, 2015 and 2014, $18.2 million of goodwill was recorded in our transportation segment. At both December 31, 2015 and 2014, $56.3 million of goodwill was recorded in our logistics segment.

(k)

Long-Lived Assets

Long-lived assets, other than goodwill and indefinite lived intangibles such as property and equipment and purchased intangible assets subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group may not be recoverable. If circumstances require a long-lived asset to be tested for possible impairment, we first compare the undiscounted cash flows expected to be generated by a long-lived asset or group to its carrying value. If the carrying value of the long-lived asset or group is deemed to not be recoverable on an undiscounted cash flow basis, an impairment charge is recognized to the extent that the carrying value exceeds its fair value. Fair value is determined through various valuation techniques including discounted cash flow models, quoted market prices and independent third-party appraisals. Changes in management’s judgment relating to salvage values and/ or estimated useful lives could result in greater or lesser annual depreciation expense or impairment charges in the future. Indefinite lived intangibles are tested for impairment annually by comparing the carrying value of the assets to their fair value.

(l)

Contingent Consideration

Contingent consideration arrangements granted in connection with a business combination are evaluated to determine whether contingent consideration is, in substance, additional purchase price of an acquired enterprise or compensation for services, use of property or profit sharing. Additional purchase price is added to the fair value of consideration transferred in the business combination and compensation is included in operating expenses in the period it is incurred. Contingent consideration related to additional purchase price is remeasured to fair value at each reporting date until the contingency is resolved.

(m)

Fair Value of Financial Instruments

For cash equivalents, accounts receivables, accounts payable, and accrued expenses, the carrying amounts are reasonable estimates of fair value as the assets are readily redeemable or short‑term in nature and the liabilities are short-term in nature. Marketable securities, consisting of equity securities, are carried at fair market value as determined by quoted market prices. Our revolving credit and term loan agreements with PNC, Comerica Bank and Flagstar consist of variable rate borrowings. The carrying value of these borrowings approximates fair value because the applicable interest rates are adjusted frequently based on short-term market rates. For our equipment promissory notes with KeyBank, the fair values are estimated using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements. See Note 7 “Fair Value Measurement and Disclosures” for further information.

(n)

Deferred Compensation

Deferred compensation relates to our bonus plans. Annual bonuses may be awarded to certain operating, sales and management personnel based on overall Company performance and achievement of specific employee or departmental objectives. Such bonuses are typically paid in annual installments over a five-year period. All bonus amounts earned by and due to employees in the current year are included in accrued expenses and other current liabilities. Those that are payable in subsequent years are included in other long-term liabilities.

(1)	Summary of Significant Accounting Policies—continued

(o)

Closing Costs

Our customers may discontinue or alter their business activity in a location earlier than anticipated, prompting us to exit a customer-dedicated facility. We recognize exit costs associated with operations that close or are identified for closure as an accrued liability in the Consolidated Balance Sheets. Such charges include lease termination costs, employee termination charges, asset impairment charges, and other exit-related costs associated with a plan approved by management. If we close an operating facility before its lease expires, costs to terminate a lease are recognized when an early termination provision is exercised, or we record a liability for non-cancellable lease obligations based on the fair value of remaining lease payments, reduced by any existing or prospective sublease rentals. Employee termination costs are recognized in the period that the closure is communicated to affected employees. The recognition of exit and disposal charges requires us to make certain assumptions and estimates as to the amount and timing of such charges. Subsequently, adjustments are made for changes in estimates in the period in which the change becomes known.

(p)

Revenue and Related Expenses

We are the primary obligor when rendering transportation services, value-added services and intermodal services, and we assume the corresponding credit risk with customers. We have discretion in setting sales prices and, as a result, our earnings may vary. In addition, we have discretion to choose and negotiate terms with our multiple suppliers for the services ordered by our customers. This includes owner-operators with whom we contract to deliver our transportation services. As such, revenue and the related purchased transportation and commissions are recognized on a gross basis when persuasive evidence of an arrangement exists, delivery has occurred at the receiver’s location or for service arrangements after the related services have been rendered, the revenue and related expenses are fixed or determinable and collectability is reasonably assured. Fuel surcharges, where separately identifiable, of $75.7 million, $119.7 million and $118.6 million for the years ended December 31, 2015, 2014 and 2013, respectively, are included in operating revenues.

Revenues and associated costs for the sales of axles and machined components are recognized when title has passed and the risks and rewards of ownership are transferred, which is at the time of shipment.

Our customer contracts could involve multiple revenue-generating activities performed for the same customer. When several contracts are entered into with the same customer in a short period of time, we evaluate whether these contracts should be considered as a single, multiple element contract for revenue recognition purposes. Criteria we consider that may result in the aggregation of contracts include whether such contracts are actually entered into within a short period of time, whether services in multiple contracts are interrelated, or if the negotiation and terms of one contract show or include consideration for another contract or contracts. Our current contracts have not been required to be aggregated, as they are negotiated independently on a standalone basis. Our customers typically choose their vendor and award business at the conclusion of a competitive bidding process for each service. As a result, although we evaluate customer purchase orders and agreements for multiple elements and aggregation of individual contracts into a multiple element arrangement, our current contracts do not meet the criteria required for multiple element contract accounting.

(q)

Insurance & Claims

Insurance and claims expense represents charges for premiums and the accruals made for claims within our self-insured retention amounts. The accruals are primarily related to auto liability, general liability, cargo and equipment damage, and service failure claims. A liability is recognized for the estimated cost of all self-insured claims including an estimate of incurred but not reported claims based on historical experience and for claims expected to exceed our policy limits. We may also make accruals for personal injury and property damage to third parties, and workers’ compensation claims if a claim exceeds our insurance coverage. Such accruals are based upon individual cases and estimates of ultimate losses, incurred but not reported losses, and losses arising from known claims ultimately settling in excess of insurance coverage using loss development factors based upon industry data and past experience. Since the reported accrual is an estimate, the ultimate liability may be different from the amount recorded.

If adjustments to previously established accruals are required, such amounts are included in operating expenses in the current period. We maintain insurance with licensed insurance carriers. Legal expenses related to auto liability claims are covered under our insurance policy. We are responsible for all other legal expenses related to claims.

(1)	Summary of Significant Accounting Policies—continued

(q)

Insurance & Claims—continued

In brokerage arrangements, our exposure to liability associated with accidents incurred by other third-party carriers, who haul freight on our behalf, is reduced by various factors including the extent to which the third party providers maintain their own insurance coverage.

Our insurance expense varies primarily based upon the frequency and severity of our accident experience, insurance rates, coverage limits, and self-insured retention amounts.

(r)

Stock Based Compensation

We record compensation expense for the grant of stock based awards. Compensation expense is measured at the grant date, based on the calculated fair value of the award, and recognized as an expense over the requisite service period (generally the vesting period of the grant). See Note 13 “Stock Based Compensation” for further information.

(s)

Income Taxes

Deferred income taxes are provided for temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We are no longer subject to U.S. federal income tax examinations by tax authorities for years before 2012. In addition, we file income tax returns in various state, local and foreign jurisdictions. Historically, we have been responsible for filing separate state, local and foreign income tax returns for our self and our subsidiaries. We are no longer subject to state or foreign jurisdiction income tax examinations for years before 2011 and 2010, respectively.

We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. We recognize interest related to unrecognized tax benefits in income tax expense and penalties in other operating expenses.

(t)

Foreign Currency Translation

The financial statements of the Company’s subsidiaries operating in Mexico, Canada and Colombia are prepared to conform to U.S. GAAP and translated into U.S. Dollars by applying a current exchange rate. The local currency has been determined to be the functional currency. Items appearing in the Consolidated Statements of Income are translated using average exchange rates during each period. Assets and liabilities of international operations are translated at period-end exchange rates. Translation gains and losses are reported in accumulated other comprehensive income (loss) as a component of shareholders’ equity.

(u)

Segment Information

We report our financial results in two reportable segments, the transportation segment and the logistics segment, based on the nature of the underlying customer commitment and the types of investments required to support these commitments. This presentation reflects the manner in which management evaluates our operating segments, including an evaluation of economic characteristics and applicable aggregation criteria.

Operations aggregated in our transportation segment are associated with individual freight shipments coordinated by our agents, company-managed terminals and specialized services operations. In contrast, operations aggregated in our logistics segment deliver value-added services or transportation services to specific customers on a dedicated basis, generally pursuant to contract terms of one year or longer. Other non-reportable operating segments are comprised of the Company’s subsidiaries that provide support services to other subsidiaries and to owner-operators, including shop maintenance and equipment leasing.

(1)	Summary of Significant Accounting Policies—continued

(v)

Concentrations of Credit Risk

Financial instruments, which potentially subject us to concentrations of credit risk, consist principally of cash and cash equivalents, marketable securities and accounts receivable. We maintain our cash and cash equivalents and marketable securities with high quality financial institutions. We perform ongoing credit evaluations of our customers and generally do not require collateral. Our customers are generally concentrated in the automotive, wind energy, building materials, machinery and metals industries. During the fiscal years ended December 31, 2015, 2014 and 2013, aggregate sales in the automotive industry totaled 28.9%, 28.4% and 33.8% of revenue, respectively. In 2015, 2014 and 2013, General Motors accounted for approximately 11.4%, 9.7% and 12.4% of our total operating revenues, respectively. In 2015, sales to our top 10 customers, including General Motors, totaled 36.9%.

(w)

Recent Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provided new accounting guidance related to revenue recognition. The objective of ASU 2014-09 is to establish a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and will supersede most of the existing revenue recognition guidance, including industry-specific guidance. The core principle of ASU 2014-09 is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. In applying the new guidance, an entity will (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the contract’s performance obligations; and (5) recognize revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 applies to all contracts with customers except those that are within the scope of other topics in the FASB Accounting Standards Codification. The new guidance was originally effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2016 for public companies. Early adoption is not permitted. Entities have the option of using either a full retrospective or modified approach to adopt ASU 2014-09. In July 2015, the FASB voted to delay of the effective date of the new standard by one year. As a result of the delay, the revenue recognition standard will be effective for public companies in 2018, with early adoption permitted. We are evaluating the effect, if any, that adopting this new accounting standard will have on our consolidated financial statements and related disclosures.

In April 2015, the FASB issued ASU 2015-03, Interest—Imputation of Interest, which is intended to simplify the presentation of debt issuance costs. ASU 2015-03 requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs would not be affected by the amendments in this update. The new guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2015 for public companies. Entities must apply the new guidance on a full retrospective basis and early adoption is permitted for financial statements that have not been previously issued. We are evaluating the effect that adopting this new accounting standard will have on our consolidated financial statements and related disclosures.

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which is intended to simplify the presentation of deferred income taxes. The ASU requires that deferred income tax liabilities and assets be classified as noncurrent in a classified balance sheet. The new guidance is effective for annual reporting periods (including interim periods within those periods) beginning after December 15, 2016 for public companies. Early adoption is permitted for financial statements that have not been previously issued. We are evaluating the effect that adopting this new accounting standard will have on our consolidated financial statements and related disclosures.

(1)	Summary of Significant Accounting Policies—continued

(w)

Recent Accounting Pronouncements - continued

In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities, which amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Among other things, the ASU requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income; simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements; and clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. The amendments are to be applied by means of a cumulative-effect adjustment to the balance sheet and are effective for interim and annual periods beginning after December 15, 2017. With certain exceptions, early adoption is not permitted. We are evaluating the effect that adopting this new accounting standard will have on our consolidated financial statements and related disclosures.

In February 2016, the FASB issued ASU 2016-02, Leases. The objective of the new standard is to establish principles for lessees and lessors to report information about the amount, timing, and uncertainty of cash flows arising from a lease. The ASU will require a lessee to recognize the assets and liabilities that arise from leases, including operating leases. Under the new requirements, a lessee will recognize in the statement of financial position a liability to make lease payments (the lease liability) and the right-of-use asset representing the right to the underlying asset for the lease term. For leases with a term of 12 months or less, the lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. The standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application of the amendment is permitted. We are evaluating the effect that adopting this new accounting standard will have on our consolidated financial statements and related disclosures.

Business Combinations

12 Months Ended

Dec. 31, 2015

Business Combinations [Abstract]

Business Combinations

(2)	Business Combinations

Acquisitions Accounted for Using the Purchase Method

In September 2014, we acquired certain assets of Bull’s-Eye Express, Inc. and its several affiliated companies, or Bull’s-Eye, based in Albany, Missouri through a Limited Asset Purchase Agreement for $1.6 million. Bull’s-Eye is a regional provider of industrial equipment transportation and freight consolidation services and is strategically positioned to service customers in the Midwest. As of December 31, 2014, $1.3 million of the purchase price was paid in cash and the remaining $0.3 million consisted of partial forgiveness of a debt due to us. Pursuant to the acquisition, Bull’s-Eye operates as part of Universal Truckload, Inc.

The pro forma effect of this acquisition has been omitted, as the effect is immaterial to the Company’s results of operations, financial position and cash flows. The allocation of the purchase price was as follows (in thousands):

Intangible assets	$	1,007
Property and equipment		400
Goodwill (tax deductible)		163
	$	1,570

The intangible assets acquired represent the acquired companies’ customer relationships and are being amortized over a period of seven years.

The operating results of the Bull’s-Eye have been included in the Consolidated Statements of Income since its acquisition date; however, it has not been separately disclosed as it is deemed immaterial.

In December 2013, we acquired Westport USA Holding, LLC (“Westport”) for $123.0 million in cash, subject to a working capital adjustment after closing. Pursuant to the terms of the Unit Purchase Agreement, Westport was acquired on a cash-free, debt-free basis. Based in Louisville, Kentucky, Westport provides value-added warehousing and component distribution services to U.S. manufacturers of Class 4-8 trucks, RVs and super-duty trucks. Westport also machines and distributes steering knuckles and axle components for the automotive industry. During 2014, we finalized the working capital adjustment and made a final payment of $1.4 million in cash. We used available cash and borrowings under our Revolving Credit and Term Loan Agreement to finance the acquisition (see Note 6 “Debt”).

(2)	Business Combinations—continued

The acquisition of Westport was accounted for in accordance with ASC 805 “Business Combinations.” Assets acquired and liabilities assumed were recorded at their estimated fair values as of December 19, 2013, with the remaining unallocated purchase price recorded as goodwill. The goodwill recorded is included in our logistics segment, and is non-deductible for income tax purposes. The estimated useful lives of these intangible assets ranged from five months to nineteen years. The final allocation of the purchase price was as follows (in thousands):

Current assets	$	24,492
Property and equipment		17,081
Goodwill		56,356
Intangible assets		57,800
Other long-term assets		474
Current liabilities		(2,932	)
Capital lease obligations		(5,164	)
Deferred tax liabilities, net		(25,083	)
	$	123,024

The intangible assets acquired represent Westport’s acquired trademarks, customer contracts and customer relationships. The acquired customer contracts and customer relationships are being amortized over a period ranging from five months to nineteen years. The useful lives of acquired trademarks are indefinite and, therefore, not subject to amortization.

The following unaudited pro forma consolidated results of operations for the twelve-month periods ended December 31, 2013 and 2012 present consolidated information of the Company as if Westport was acquired on January 1, 2012 (in thousands, except per share data):

	Pro Forma Twelve Months Ended December 31, 2013		Pro Forma Twelve Months Ended December 31, 2012
Operating revenues	$	1,121,459	$	1,095,393
Operating income	$	93,972	$	66,848
Net Income	$	54,791	$	44,143
Earnings per common share:
Basic	$	1.82	$	1.47
Diluted	$	1.82	$	1.47

The unaudited pro forma consolidated results for the twelve-month periods were prepared using the acquisition method of accounting and are based on the historical financial information of Westport and the Company. The historical financial information has been adjusted to give effect to pro forma adjustments that are: (i) directly attributable to the acquisition, (ii) factually supportable and (iii) expected to have a continuing impact on the combined results. The unaudited pro forma condensed combined financial statements are presented for illustrative purposes and do not purport to represent what the financial position or results of operations would actually have been had we acquired Westport on January 1, 2012.

The acquisition of Westport strategically enhances our customer base by further penetrating industrial markets, specifically to manufacturers of medium and heavy-duty trucks. We believe that Westport’s value-added services and limited capital requirements fit nicely into our business model and long-term growth strategy. The operating results of Westport have been included in the Consolidated Statements of Income since its acquisition date. Included in our operating results during the year ended December 31, 2013 are transaction and other acquisition related costs totaling $0.7 million, which are reflected in selling, general and administrative expenses in the Consolidated Statements of Income.

Goodwill represents the excess of purchase price over the estimated fair value assigned to the net tangible and identifiable intangible assets of the businesses acquired, and the expected synergies to be achieved through the integration of the acquired companies into Universal.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1500-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1524-128463

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4922-128472

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4934-128472

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4926-128472

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

+ Details

Accounts Receivable

12 Months Ended

Dec. 31, 2015

Receivables [Abstract]

Accounts Receivable

(3)	Accounts Receivable

Accounts receivable amounts appearing in the financial statements include both billed and unbilled receivables. We bill customers in accordance with contract terms, which may result in a brief timing difference between when revenue is recognized and when invoices are rendered. Unbilled receivables, which usually are billed within one month, totaled $11.8 million and $11.6 million at December 31, 2015 and 2014, respectively.

Accounts receivable are presented net of an allowance for doubtful accounts. Following is a summary of the activity in the allowance for doubtful accounts for the years ended December 31 (in thousands):

	2015			2014			2013
Balance at beginning of year	$	5,207		$	2,688		$	2,515
Provision for doubtful accounts		3,004			3,504			1,515
Acquisition of businesses		—			—			163
Uncollectible accounts written off		(3,038	)		(985	)		(1,505	)
Balance at end of year	$	5,173		$	5,207		$	2,688

Property and Equipment

12 Months Ended

Dec. 31, 2015

Property Plant And Equipment [Abstract]

Property and Equipment

(4)	Property and Equipment

Property and equipment at December 31 consists of the following (in thousands):

	2015			2014
Transportation equipment	$	185,351		$	186,344
Land, buildings and related assets		73,096			67,472
Other operating assets		66,290			54,433
Information technology equipment		18,660			15,261
Construction in process		5,607			4,169
		349,004			327,679
Less accumulated depreciation		(171,815	)		(149,610	)
Total	$	177,189		$	178,069

Accrued Expenses and Other Current Liabilities

12 Months Ended

Dec. 31, 2015

Payables And Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

(5)	Accrued Expenses and Other Current Liabilities

Accrued expenses consist of the following items at December 31 (in thousands):

	2015		2014
Payroll related items	$	6,833	$	8,827
Driver escrow liabilities		4,486		4,519
Commissions, taxes and other		7,670		8,995
Total	$	18,989	$	22,341

Debt

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Debt

(6)

Debt

Debt is comprised of the following (in thousands):

	Interest Rates at	December 31,
	December 31, 2015	2015		2014
Outstanding Debt:
PNC $120 million revolving credit facility
$55.0 million LIBOR rate advance	LIBOR + 1.50%	$	55,000	$	—
$4.6 million domestic rate advance	Prime + 0.50%		4,569		—
Key equipment notes	3.75%		83,578		—
Comerica syndicated credit facility
$40 million term loan	LIBOR + 2.50%		40,000		—
$20 million revolving credit facility
$6.0 million LIBOR rate advance	LIBOR + 2.00%		6,000		—
$5.8 million base rate advance	Prime + 1.00%		5,766
Flagstar Bank $40 million unsecured term loan	LIBOR + 3.50%		40,000		—
UBS secured borrowing facility	LIBOR + 1.10%		—		—
Debt paid upon refinancing:
Comerica syndicated credit facility
$120 million revolving credit facility	NA		—		59,500
Swing Line sub-facility	NA		—		370
$60 million equipment financing facility	NA		—		55,428
$50 million term loan	NA		—		50,000
$70 million term loan B	NA		—		70,000
			234,913		235,298
Less current portion			61,488		9,593
Total long-term debt		$	173,425	$	225,705

(6)	Debt—continued

December 2015 Debt Refinancing

On December 23, 2015, Universal and certain of its wholly-owned subsidiaries entered into a combination of secured and unsecured loans with certain lenders. The Company undertook the action as part of its ongoing organizational streamlining efforts to better align sources of capital used in its asset-light businesses and to fix a portion of its variable interest rate bearing debt. Upon closing, the Company and subsidiaries involved borrowed approximately $234.9 million to pay off existing indebtedness, to terminate its syndicated Comerica Bank Revolving Credit and Term Loan Agreement, and to pay fees and expenses associated with the new credit agreements.

$120 million Revolving Credit Facility

Universal Truckload, Inc., Universal Dedicated, Inc., Mason Dixon Intermodal, Inc., Logistics Insight Corp., Universal Logistics Solutions International, Inc., Universal Specialized, Inc., Cavalry Logistics, LLC and Universal Management Services, Inc., (each a wholly-owned subsidiary of the Company, a Borrowing Subsidiary and, collectively, the “Borrowing Subsidiaries”) entered into a Revolving Credit and Security Agreement with PNC Bank, National Association (“PNC”) to provide for a revolving credit facility of up to $120 million (which amount may be increased by up to $30 million upon request). Borrowings under the revolving credit facility may be made until, and mature on, December 23, 2020.

To support daily borrowing and other operating requirements, the revolving credit facility contains a $10.2 million Swing Loan sub-facility and provides for $3.0 million in letters of credit. There were no amounts outstanding under the Swing Loan at December 31, 2015, and no letters of credit were issued against the line.

Borrowings under the Revolving Credit and Security Agreement bear interest at LIBOR or a base rate, plus an applicable margin for each. The applicable margin fluctuates based on the Borrowing Subsidiaries’ quarterly average excess availability, as defined in the Revolving Credit and Security Agreement. Interest on the unpaid balance of all base rate advances is payable quarterly in arrears on the first day of each calendar quarter. Interest on the unpaid balance of each LIBOR based advance of the revolving credit facility is payable on the last day of the applicable LIBOR interest period. At December 31, 2015, interest on a $55.0 million LIBOR rate advance accrued at 1.92% based on 30-day LIBOR, and interest on a $4.6 million domestic rate advance accrued at 4.0% based on PNC’s prime rate.

The Revolving Credit and Security Agreement includes customary affirmative and negative covenants and events of default, as well as financial covenants requiring a minimum fixed charge coverage ratio to be maintained after a triggering event, as defined in the Revolving Credit and Security Agreement. The Revolving Credit and Security Agreement also includes customary mandatory prepayments provisions and is subject to an unused revolving credit line of 0.25%. At December 31, 2015, we were in compliance with the debt covenants.

As security for all indebtedness pursuant to the Revolving Credit and Security Agreement, PNC was granted a first priority perfected security interest in cash, deposits and accounts receivable of the Borrowing Subsidiaries and selected other assets. At December 31, 2015, our $59.6 million revolver advance was secured by, among other assets, net eligible accounts receivable totaling $93.7 million. At December 31, 2015, availability, as defined in the Revolving Credit and Security Agreement, was $24.8 million.

Equipment Credit Agreement

LGSI Equipment of Indiana, LLC, a wholly-owned subsidiary of the Company (the “Equipment Borrowing Subsidiary”), entered into a Master Security Agreement and five Promissory Notes (collectively the “Equipment Credit Agreement”) with Key Equipment Finance, a division of KeyBank National Association (“KeyBank”). Under the Equipment Credit Agreement, the Equipment Borrowing Subsidiary borrowed approximately $83.6 million. The promissory notes will be repaid in 60 monthly installments, including interest, beginning on January 23, 2016 and bear interest at a fixed rate of 3.75%.

Additionally, all obligations under the Equipment Credit Agreement are guaranteed by Universal Dedicated, Inc., Logistics Insight Corp., Universal Truckload, Inc., Universal Specialized, Inc. and Mason Dixon Intermodal, Inc. (each a wholly-owned subsidiary of the Company) in connection with each subsidiary’s lease of equipment. The Equipment Credit Agreement also includes financial covenants requiring the Equipment Borrowing Subsidiary to maintain a ratio of operating cash flow to fixed charges of not less than 1.1:1, as defined in the agreement. The first test for compliance occurs on March 31, 2016.

(6)	Debt—continued

As security for all indebtedness pursuant to the Equipment Credit Agreement, KeyBank was granted liens on selected titled vehicles of the Equipment Borrowing Subsidiary set forth on various collateral schedules. The Equipment Borrowing Subsidiary may sell or dispose of equipment secured under the Equipment Credit Agreement provided the disposed equipment is replaced with acceptable equipment as collateral, if we pay down of a portion of the loan plus breakage charges and handling charges, as defined in the promissory notes, or if KeyBank, at its option, releases the equipment without pay down or pre-payment. At December 31, 2015, the aggregate principal outstanding pursuant to the five promissory notes totaled $83.6 million, which is collateralized by equipment with an appraised orderly liquidation value of $93.0 million and a carrying amount of $70.5 million.

$60 million Revolving Credit and Term Loan Agreement

Westport Axle Corp., a wholly-owned subsidiary of the Company (“Westport”) entered into a Revolving Credit and Term Loan Agreement (the “Credit Agreement”), with and among the lenders party thereto and Comerica Bank, as administrative agent, arranger and documentation agent, providing for aggregate borrowing facilities of up to $60 million. The Credit Agreement consists of a $40 million term loan and a $20 million revolving credit facility. Borrowings under the term loan were advanced on December 23, 2015 and mature on December 23, 2020. The term loan shall be repaid in 20 equal quarterly installments of $1.5 million over five years beginning March 1, 2016, with the remaining balance due at maturity. Borrowings under the revolving credit facility may be made until, and mature on, December 23, 2020.

Borrowings under the Credit Agreement bear interest at LIBOR or a base rate, plus an applicable margin for each. The applicable margin fluctuates based on Westport’s total debt to EBITDA ratio, as defined in the Credit Agreement. At December 31, 2015, interest on the $40.0 million term loan accrued at 2.92% based on 30-day LIBOR. At December 31, 2015, interest on a $6.0 million LIBOR rate revolving credit advance accrued at 2.42% based on 30-day LIBOR, and interest on a $5.8 million base rate revolving credit advance accrued at 4.50% based on Comerica’s prime rate.

To support daily borrowing and other operating requirements, the revolving credit facility contains a $4.0 million Swing Line sub-facility and provides for $2.0 million in letters of credit. Swing Line borrowings incur interest at either the base rate plus the applicable margin or, alternatively, at a quoted rate offered by Comerica Bank in its sole discretion. There were no amounts outstanding under the Swing Line at December 31, 2015, and no letters of credit were issued against the line.

Interest on the unpaid balance of all revolving credit facility and swing line base rate advances is payable quarterly in arrears commencing on March 1, 2016, and on the first day of each June, September, December and March thereafter. Interest on the unpaid balance of each Eurodollar-based advance of the revolving credit facility is payable on the last day of the applicable Eurodollar interest period. Interest on the unpaid balance of each quoted rate based advance of the swing line is payable on the last day of the applicable quoted rate interest period.

Interest on the unpaid principal of all term loan base rate advances is payable quarterly in arrears commencing on January 1, 2016, and on the first day of each April, July, October and January thereafter. Interest on the unpaid principal of each Eurodollar-based advance of the term loan is payable on the last day of the applicable Eurodollar interest period.

The revolving credit facility is subject to a facility fee, which is payable quarterly in arrears, of either 0.25% or 0.50%, depending on Westport’s ratio of total debt to EBITDA. Other than in connection with Eurodollar-based advances or quoted rate advances that are paid off and terminated prior to an applicable interest period, there are no premiums or penalties resulting from prepayment. Borrowings outstanding at any time under the revolving credit facility are limited to the value of eligible accounts receivable and inventory of Westport, pursuant to a monthly borrowing base certificate. At December 31, 2015, our $11.8 million revolver advance was secured by, among other assets, net eligible accounts receivable and inventory of $17.6 million and $7.1 million, respectively. At December 31, 2015, availability, as defined in the Credit Agreement, was $6.8 million.

The Credit Agreement requires Westport to repay the borrowings made under the term loan and the revolving credit facility as follows: 50% (which percentage shall be reduced to 0% subject to Westport attaining a certain leverage ratio) of Westport’s annual excess cash flow, as defined; 100% of the net cash proceeds if we sell Westport’s machining division; 50% of net proceeds from certain equity issuances; 100% of proceeds from the issuance of certain indebtedness; and 100% of net proceeds from the sale of certain assets, insurance and condemnation proceeds.

(6)	Debt—continued

As security for all indebtedness pursuant to the syndicated Credit Agreement, Comerica Bank, as lead arranger, was granted first perfected security interest on all of Westport’s tangible and intangible property and in assets acquired in the future. The Company also pledged 100% of its equity interest in Westport. The Credit Agreement also contains a “springing” guaranty requiring the Company to guarantee the indebtedness under certain events, as defined in the Credit Agreement and guarantee.

The Credit Agreement includes financial covenants requiring Westport to maintain a minimum fixed charge coverage ratio, minimum quarterly EBITDA amounts, as defined in the Credit Agreement, and a maximum debt to EBITDA ratio, as well as customary affirmative and negative covenants and events of default. At December 31, 2015, we were in compliance with the debt covenants.

No later than 90 days after closing, Westport shall execute and deliver a Rate Management Agreement (or other interest rate swap agreements), as defined in the Credit Agreement, with respect to the term loan, based on a notional amount of not less than $12.0 million and a duration of two years.

$40 million Loan and Financing Agreement

The Company entered into a Loan and Financing Agreement (the “Loan Agreement”) with Flagstar Bank, F.S.B. (“Flagstar”) to provide for a $40.0 million unsecured term loan. Proceeds of the unsecured term loan were advanced on December 23, 2015, and the outstanding principal balance is due on or before July 15, 2016. Borrowings under the unsecured term loan bear interest at LIBOR, plus 3.5%, and interest on the unpaid balance is payable monthly commencing on February 1, 2016. The Company may voluntarily repay the loan in whole or in part at any time, subject to certain customary breakage costs. At December 31, 2015, the outstanding principal balance was $40.0 million and interest accrued at 3.92%.

The Loan Agreement provides for a conversion option whereby Flagstar has preliminarily agreed to refinance the unsecured term loan with $40.0 million of secured real estate term notes with UTSI Finance, Inc. (“UTSI Finance”), a wholly-owned subsidiary of the Company. Each UTSI Finance real estate term note will be secured by a first mortgage on a particular parcel of real estate and improvements included in the collateral pool, as defined in the agreement. Refinancing under the secured real estate term notes is subject to, among other things, the satisfaction of all conditions at conversion including satisfactory receipt and review of appraisals, environmental and title work, and insurance policies with respect to the assets in the collateral pool. Our evaluation of this conversion option resulted in short-term classification of the loan balance.

Debt Paid Upon Refinancing

Comerica syndicated credit facility

The Company’s Revolving Credit and Term Loan Agreement dated August 28, 2012, as amended, (the “Credit Agreement”) with and among the lenders parties thereto and Comerica Bank, as administrative agent, provided for aggregate borrowing facilities of up to $300 million. The Credit Agreement, consisted of a $120 million revolving credit facility, a $60 million equipment credit facility, a $50 million term loan, and a $70 million term loan B. Additionally, the Credit Agreement provided for up to $5 million in letters of credit, which letters of credit reduce availability under the revolving credit facility. On December 23, 2015, the Credit Agreement was paid in full and terminated.

$120 million Revolving Credit Facility

The revolving credit facility was available to refinance existing indebtedness and to finance working capital through, and mature on, August 28, 2017. Two interest rate options were applicable to advances borrowed pursuant to the facility: Eurodollar-based advances and base rate advances. Eurodollar-based advances bore interest at 30, 60 or 90-day LIBOR rates plus an applicable margin, which varied from 1.35% to 2.10% based on our ratio of total debt to earnings before interest, taxes, depreciation and amortization (“EBITDA”), as defined. As an alternative, base rate advances bore interest at a base rate, as defined, plus an applicable margin, which also varied based on our ratio of total debt to EBITDA in a range from 0.35% to 1.10%. The base rate is the greater of the prime rate announced by Comerica Bank, the federal funds effective rate plus 1.0%, or the daily adjusting LIBOR rate plus 1.0%. At December 31, 2014, interest accrued at 2.02% based on 30-day LIBOR.

(6)	Debt—continued

The revolving credit facility also contained a $10.0 million Swing Line sub-facility and a $5.0 million letter of credit sub-facility. The Swing Line provided for borrowings of up to $7.0 million from Comerica Bank and $3.0 million from KeyBank, so long as the Comerica Bank and KeyBank advances did not exceed $10.0 million in the aggregate. Swing Line borrowings incurred interest at either the base rate plus the applicable margin or, alternatively, at a quoted rate offered by the applicable Swing Line lender in its sole discretion. At December 31, 2014, there was $0.4 million outstanding under the Swing Line and interest accrued at 4.10% based on the prime rate. We did not have any letters of credit issued against the revolving credit facility.

Interest on the unpaid balance of all revolving credit facility and swing line base rate advances was payable quarterly in arrears commencing on October 1, 2012, and on the first day of each October, January, April and July thereafter. Interest on the unpaid balance of each Eurodollar-based advance of the revolving credit facility was payable on the last day of the applicable Eurodollar interest period. Interest on the unpaid balance of each quoted rate based advance of the swing line was payable on the last day of the applicable quoted rate interest period.

The revolving credit facility was subject to a facility fee, payable quarterly in arrears, of either 0.25% or 0.50%, depending on our ratio of total debt to EBITDA. Other than in connection with Eurodollar-based advances or quoted rate advances that were paid off and terminated prior to an applicable interest period, there were no premiums or penalties resulting from prepayment. Borrowings outstanding at any time under the revolving credit facility were limited to the value of eligible accounts receivable of our principal operating subsidiaries, pursuant to a monthly borrowing base certificate. At December 31, 2014, our $59.5 million revolver advance was secured by, among other assets, net eligible accounts receivable totaling $122.4 million, of which, $104.1 million were available for borrowing against pursuant to the agreement.

$60 million Equipment Credit Facility

The equipment credit facility was available to refinance existing indebtedness and to finance capital expenditures including in connection with acquisitions. Borrowings under the equipment credit facility could be made until August 28, 2015, and such borrowings were being repaid in quarterly installments equal to 1/28th of the aggregate amount of borrowings under the equipment credit facility commencing on January 1, 2014.

The two interest rate options that applied to revolving credit facility advances also applied to equipment credit facility advances. Eurodollar-based advances bear interest at 30, 60 or 90-day LIBOR rates plus an applicable margin, which varied from 1.60% to 2.60% based on our ratio of total debt to EBITDA. Base rate advances bore interest at a base rate, as defined, plus an applicable margin, which also varied based on our ratio of total debt to EBITDA in a range from 0.60% to 1.60%. The equipment credit facility was subject to an unused fee, payable quarterly in arrears, of 0.50%. At December 31, 2014, interest accrued at 2.52% based on 30-day LIBOR.

Interest on the unpaid balance of all equipment credit facility base rate advances was payable quarterly in arrears commencing on October 1, 2012, and on the first day of each October, January, April and July thereafter. Interest on the unpaid balance of each Eurodollar-based advance of the equipment credit facility was payable on the last day of the applicable Eurodollar interest period.

$50 million Term Loan

Proceeds of the term loan were advanced on October 1, 2012 and used to refinance existing indebtedness of LINC. The outstanding principal balance was due on August 28, 2017, to the extent not already reduced by mandatory or optional prepayments. The applicable interest rate on the effective date of the term loan indebtedness was the base rate. Base rate advances bore interest at a defined base rate plus an applicable margin which varied from 1.50% to 2.25%, based on our ratio of total debt to EBITDA. Thereafter, we could convert base rate advances to Eurodollar-based advances, which bear interest at 30, 60 or 90-day LIBOR rates plus an applicable margin which varied from 2.50% to 3.25%, based on our ratio of total debt to EBITDA. At December 31, 2014, interest accrued at 3.17% based on 30-day LIBOR.

Interest on the unpaid principal of all term loan base rate advances was payable quarterly in arrears commencing on October 1, 2012, and on the first day of each October, January, April and July thereafter. Interest on the unpaid principal of each Eurodollar-based advance of the term loan was payable on the last day of the applicable Eurodollar interest period.

(6)	Debt—continued

$70 million Term Loan B

Proceeds of the term loan were advanced on December 19, 2013 and used to finance the acquisition of Westport. The outstanding principal balance was due on August 28, 2017, to the extent not already reduced by mandatory or optional prepayments. The applicable interest rate on the effective date of the term loan indebtedness was the base rate. Base rate advances bore interest at a defined base rate plus an applicable margin which varied from 1.50% to 2.25%, based on our ratio of total debt to EBITDA. Thereafter, we could convert base rate advances to Eurodollar-based advances, which bore interest at 30, 60 or 90-day LIBOR rates plus an applicable margin which varied from 2.50% to 3.25%, based on our ratio of total debt to EBITDA. At December 31, 2014, interest accrued at 3.17% based on 30-day LIBOR.

Interest on the unpaid principal of all term loan base rate advances was payable quarterly in arrears commencing on January 1, 2014, and on the first day of each January, April, July and October thereafter. Interest on the unpaid principal of each Eurodollar-based advance of the term loan was payable on the last day of the applicable Eurodollar interest period.

The Credit Agreement required us to repay the borrowings made under the term loan facilities and the equipment credit facility as follows: 50% (which percentage shall be reduced to 0% subject to the Company attaining a certain leverage ratio) of our annual excess cash flow, as defined; 100% of net cash proceeds of certain asset sales; and 100% of certain insurance and condemnation proceeds. Mandatory prepayments of the term loans were $1.0 million as of December 31, 2014. We could voluntarily repay outstanding loans under each of the facilities at any time, subject to certain customary “breakage” costs with respect to LIBOR-based borrowings. In addition, we could elect to permanently terminate or reduce all or a portion of the revolving credit facility.

All obligations under the Credit Agreement were unconditionally guaranteed by the Company’s material U.S. subsidiaries, and the obligations of the Company and such subsidiaries under the Credit Agreement and such guarantees were secured by, subject to certain exceptions, substantially all of their assets. The Credit Agreement also could, in certain circumstances, limit our ability to pay dividends or distributions. The Credit Agreement included annual, quarterly and ad hoc financial reporting requirements and financial covenants requiring the Company to maintain maximum leverage ratios and a minimum fixed charge coverage ratio, as well as customary affirmative and negative covenants and events of default. Specifically, we could not exceed a maximum senior debt to EBITDA ratio, as defined, of 2.5:1 and a maximum total debt to EBITDA ratio, as defined, of 3.0:1. We must also maintain a fixed charge coverage ratio, as defined, of not less than 1.25:1. At December 31, 2014, the Company was in compliance with its debt covenants.

UBS Secured Borrowing Facility

We also maintain a secured borrowing facility at UBS Financial Services, Inc. (“UBS”), using our marketable securities as collateral for the short-term line of credit. The line of credit bears an interest rate equal to LIBOR plus 1.10% (effective rate of 1.53% at December 31, 2015), and interest is adjusted and billed monthly. No principal payments are due on the borrowing; however, the line of credit is callable at any time. The amount available under the line of credit is based on a percentage of the market value of the underlying securities. If the equity value in the account falls below the minimum requirement, we must restore the equity value, or UBS may call the line of credit. We did not have any amounts outstanding under our line of credit at December 31, 2015 or 2014, and the maximum available borrowings under the line of credit were $7.4 million and $6.9 million, respectively.

(6)	Debt—continued

Maturities

The following table reflects the maturities of our principal repayment obligations as of December 31, 2015 (in thousands):

Years Ending December 31	PNC Revolving Credit Facility		KeyBank Equipment Promissory Notes		Comerica Revolving Credit Facility		Comerica Term Loan		Flagstar Unsecured Term Loan		Total
2016	$	—	$	15,488	$	—	$	6,000	$	40,000	$	61,488
2017		—		16,078		—		6,000		—		22,078
2018		—		16,692		—		6,000		—		22,692
2019		—		17,329		—		6,000		—		23,329
2020		59,569		17,991		11,766		16,000		—		105,326
Total	$	59,569	$	83,578	$	11,766	$	40,000	$	40,000	$	234,913

Fair Value Measurement and Disclosures

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Measurement and Disclosures

(7)	Fair Value Measurement and Disclosures

ASC Topic 820, “Fair Value Measurements and Disclosures”, defines fair value as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date and expanded disclosures with respect to fair value measurements.

ASC Topic 820 also establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows:

Level 1 — Quoted prices in active markets for identical assets or liabilities.

Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

We have segregated all financial assets that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the tables below (in thousands):

	December 31, 2015
	Level 1		Level 2		Level 3		Fair Value Measurement
Assets
Cash equivalents	$	96	$	—	$	—	$	96
Marketable securities		13,431		—		—		13,431
Total Assets	$	13,527	$	—	$	—	$	13,527

	December 31, 2014
	Level 1		Level 2		Level 3		Fair Value Measurement
Assets
Cash equivalents	$	21	$	—	$	—	$	21
Marketable securities		14,309		—		—		14,309
Total Assets	$	14,330	$	—	$	—	$	14,330

(7)	Fair Value Measurement and Disclosures—continued

The valuation techniques used to measure fair value for the items in the tables above are as follows:

Cash equivalents – This category consists of money market funds which are listed as Level 1 assets and measured at fair value based on quoted prices for identical instruments in active markets.

Marketable securities – Marketable securities represent equity securities, which consist of common and preferred stocks, are actively traded on public exchanges and are listed as Level 1 assets. Fair value was measured based on quoted prices for these securities in active markets.

Our revolving credit and term loan agreements with PNC, Comerica Bank and Flagstar consists of variable rate borrowings. We categorize borrowings under these credit agreements as Level 2 in the fair value hierarchy. The carrying value of these borrowings approximate fair value because the applicable interest rates are adjusted frequently based on short-term market rates.

For our equipment promissory notes with KeyBank, the fair values are estimated using discounted cash flow analyses, based on our current incremental borrowing rates for similar types of borrowing arrangements. We categorize borrowings under this credit agreement as Level 2 in the fair value hierarchy. The carrying values and estimated fair values of these promissory notes at December 31, 2015 is summarized as follows:

2015

Carrying Value

Estimated Fair

Value

Equipment promissory notes

83,578

We have not elected the fair value option for any of our financial instruments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Transactions with Affiliates

12 Months Ended

Dec. 31, 2015

Transactions with Affiliates

(8)	Transactions with Affiliates

Through December 31, 2004, Universal was a wholly-owned subsidiary of CenTra, Inc. On December 31, 2004, CenTra distributed all of Universal’s common stock to the shareholders of CenTra. Subsequent to our initial public offering in 2005, our majority shareholders retained and continue to hold a controlling interest in Universal. In the normal course of business, CenTra provides administrative support services to Universal, including legal, human resources, tax, IT infrastructure and services to host our accounting system in a data center environment. The cost of these services is based on the actual or estimated utilization of the specific service.

In addition to the administrative support services described above, Universal purchases other services from affiliates. Following is a schedule of cost incurred and included in operating expenses for services provided by affiliates for the years ended December 31 (in thousands):

	2015		2014		2013
Administrative support services	$	3,774	$	2,459	$	2,367
Truck fueling and maintenance		1,983		1,320		1,774
Real estate rent and related costs		13,174		10,472		11,352
Insurance and employee benefit plans		46,173		36,073		32,710
Contracted transportation services		969		930		311
Total	$	66,073	$	51,254	$	48,514

In connection with our transportation services, we also routinely cross the Ambassador Bridge between Detroit, Michigan and Windsor, Ontario, and we pay tolls and other fees to certain related entities which are under common control with CenTra. CenTra also charges us for the direct variable cost of various maintenance, fueling and other operational support costs for services delivered at their trucking terminals that are geographically remote from our own facilities. Such activities are billed when incurred, paid on a routine basis, and reflect actual labor utilization, repair parts costs or quantities of fuel purchased.

A significant number of our transportation and logistics service operations are located at facilities leased from affiliates. At 43 facilities, occupancy is based on either month-to-month or contractual, multi-year lease arrangements which are billed and paid monthly. Leasing properties provided by an affiliate that owns a substantial commercial property portfolio affords us significant operating flexibility. However, we are not limited to such arrangements. See Note 10, “Leases” for further information regarding the cost of leased properties.

(8)	Transactions with Affiliates—continued

In July 2015, we entered into a lease agreement with Cedar Investments LLC, an affiliate, to provide us a logistics facility of up to 500,000 sq. ft. located on 33 acres in close proximity to a major customer in Detroit, Michigan. The term of the lease is 124 months at a rate of approximately $256,500 per month.

We purchase workers’ compensation, property and casualty, cargo, warehousing and other general liability insurance from an insurance company controlled by our majority shareholders. Our employee health care benefits and 401(k) programs are also provided by this affiliate.

Other services from affiliates, including leased real estate, insurance and employee benefit plans, and contracted transportation services, are delivered to us on a per-transaction-basis or pursuant to separate contractual arrangements provided in the ordinary course of business. At December 31, 2015 and 2014, amounts due to affiliates were $3.4 million and $2.9 million, respectively. In our Consolidated Balance Sheets, we record our insured claims liability and the related recovery from an affiliate insurance provider in insurance and claims, and other receivables. At December 31, 2015 and 2014, there were $11.5 million and $10.7 million, respectively, included in each of these accounts for insured claims.

We incurred approximately $0.5 million of costs in both 2014 and 2013 relating to underwritten public offerings of our common stock. Under the Amended and Restated Registration Rights Agreement, dated as of July 25, 2012 with our majority shareholders, we were responsible to pay for the cost of the offering. After deducting the underwriting discount and offering expenses, we did not have any remaining proceeds from the sales of our common stock.

We did not purchase any tractors or trailers from affiliates during 2015. We did however purchase used snow removal equipment from an affiliate during 2015 for approximately $18,000. During 2014, we purchased ten used tractors and one used trailer from an affiliate totaling approximately $0.8 million. During 2013, we purchased 39 used tractors from an affiliate for approximately $1.6 million.

We have retained the law firm of Sullivan Hincks & Conway to provide legal services. Daniel C. Sullivan, a member of our Board, is a partner at Sullivan Hincks & Conway. Not included in the table above are amounts paid for legal services during 2015, 2014 and 2013 were $1,500, $92,000 and $7,000, respectively.

We also exercised our right of first refusal to acquire 25,000 shares of restricted stock from a director, H.E. “Scott” Wolfe, for $622,500 based on the closing market price on March 5, 2015, the effective date of the transaction. Effective August 19, 2015, we exercised our right of first refusal to acquire 2,500 shares of restricted stock from our CEO, Jeff Rogers, for $50,825 based on the closing market price on the effective date of the transaction.

Services provided by Universal to Affiliates

We may assist our affiliates with selected transportation and logistics services in connection with their specific customer contracts or purchase orders. Truck fueling and administrative expenses are presented net in operating expense. Following is a schedule of services provided to CenTra and affiliates for the years ended December 31 (in thousands):

	2015		2014		2013
Transportation and intermodal services	$	400	$	308	$	9,800
Truck fueling and maintenance		—		87		184
Administrative and customer support services		—		71		113
Total	$	400	$	466	$	10,097

At December 31, 2015 and 2014, amounts due from affiliates were $1.9 million and $1.6 million, respectively.

We did not sell any equipment to affiliates during 2015. In 2014, we sold forty-one used trailers to an affiliate for approximately $82,000. The trailers were fully depreciated, and therefore, the sale resulted in a gain of approximately $82,000.

Also during 2014, we acquired selected assets, operations and businesses in connection with international border crossing freight processing, customs documentation and compliance services from an affiliate for approximately $100,000.

(8)	Transactions with Affiliates—continued

In June 2015, our Board of Directors authorized the repurchase of up to 1,000,000 shares of our common stock through a “Dutch auction” tender offer. Subject to certain limitations and legal requirements, we could repurchase up to an additional 2% of our outstanding shares. The tender offer began on the date of the announcement, June 9, 2015, and expired on July 8, 2015. Through this tender offer, the Company’s shareholders had the opportunity to tender some or all of their shares at a price within the range of $21.50 to $23.50 per share. Upon expiration, 1,599,605 shares were purchased through this offer at a final purchase price of $21.50 per share for a total purchase price of approximately $34.4 million, including fees and commission. The tender offer was settled on July 14, 2015, and we used funds borrowed under our then existing line of credit and from our available cash and cash equivalents to fund the offering. Immediately following the consummation of the tender offer, we had 28,380,679 shares of common stock outstanding. The total amount of shares purchased in the tender offer included 1,486,060 shares tendered by Mr. Manuel J. Moroun, a member of Universal’s Board of Directors, and a trust controlled by him. Mr. Moroun is the father of Mr. Matthew T. Moroun, the Chairman of the Board of Directors.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Income Taxes

(9)	Income Taxes

A summary of income related to U.S. and non-U.S. operations are as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Operations
U.S. Domestic	$	62,781	$	70,079	$	74,697
Foreign		2,224		3,020		6,219
Total pre-tax income	$	65,005	$	73,099	$	80,916

The provision for income taxes attributable to income from continuing operations for the years ended December 31 consists of the following (in thousands):

	2015			2014		2013
Current:
U.S. Federal	$	19,544		$	20,822	$	22,797
State		4,469			4,838		3,609
Foreign		449			590		1,442
		24,462			26,250		27,848
Deferred:
U.S. Federal		1,183			489		1,922
State		(730	)		891		524
Foreign		89			99		50
		542			1,479		2,496
Total	$	25,004		$	27,729	$	30,344

(9)	Income Taxes—continued

Deferred income tax assets and liabilities at December 31 consist of the following (in thousands):

	2015						2014
	Current			Long-term			Current			Long-term
Domestic deferred tax assets:
Allowance for doubtful accounts	$	1,809		$	—		$	1,391		$	—
Other assets		—			4,275			—			3,083
Accrued expenses		4,868			—			5,285			—
Total domestic deferred tax assets		6,677			4,275			6,676			3,083
Domestic deferred tax liabilities:
Prepaid expenses		(383	)		—			(1,290	)		—
Marketable securities		—			(1,015	)		—			(1,687	)
Intangible assets		—			(15,987	)		—			(18,404	)
Property and equipment		—			(34,177	)		—			(29,061	)
Total domestic deferred tax liabilities		(383	)		(51,179	)		(1,290	)		(49,152	)
Foreign deferred tax asset
Other assets		133			470			—			590
Valuation allowance - foreign		—			(406	)		—			(404	)
Total foreign deferred tax asset		133			64			—			186
Net deferred tax asset (liability)	$	6,427		$	(46,840	)	$	5,386		$	(45,883	)

In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the domestic and foreign deferred tax assets will not be realized. The deferred tax assets and liabilities were reviewed separately by jurisdictions when measuring the need for valuation allowances. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income (both ordinary income and taxable capital gains) during the periods in which those temporary differences reverse. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies in making this assessment. Valuation allowances are established when necessary to reduce deferred tax assets when it is more likely than not that a portion or all of the deferred tax assets will not be realized. Based upon the level of historical taxable income, reversal of existing taxable temporary differences, projections for future taxable income over the periods in which the domestic deferred tax assets are expected to reverse, and our ability to generate future capital gains, management believes it is more likely than not that we will realize the benefits of these deductible differences. Thus, no valuation allowance has been established for the domestic deferred tax assets. Based on the anticipated earnings projections of the foreign subsidiaries, management has recorded a full valuation allowance for the deferred tax assets associated with the German subsidiary.

We have not provided for U.S. income taxes on foreign subsidiaries undistributed earnings since they are expected to be reinvested indefinitely outside the U.S. It is not possible to predict the amount of U.S. income taxes that might be payable if these earnings were eventually repatriated. As of December 31, 2015, the undistributed earnings of foreign subsidiaries was approximately $8.2 million.

The amount of the domestic and foreign deferred tax assets considered realizable, however, could be reduced in the near term if estimates of future taxable income are reduced or capital gains contemplated under tax planning strategies are not realized.

Income tax expense attributable to income from continuing operations differs from the statutory rates as follows:

	2015			2014			2013
Federal statutory rate		35	%		35	%		35	%
Non-deductible (benefit) expense		0	%		-2	%		-1	%
State, net of federal benefit		4	%		5	%		3	%
Foreign		-1	%		0	%		0	%
Effective tax rate		38	%		38	%		37	%

(9)	Income Taxes—continued

As of December 31, 2015, the total amount of unrecognized tax benefit representing uncertainty in certain tax positions was $0.3 million. These uncertain tax positions are based on recognition thresholds and measurement attributes for the financial statement recognition and measurements of a tax position taken or expected to be taken in a tax return. Any prospective adjustments to our accrual for uncertain tax positions will be recorded as an increase or decrease to the provision for income taxes and would impact our effective tax rate. At December 31, 2015, there are no positions for which it is reasonably possible that the total amounts of unrecognized tax benefits would significantly increase or decrease within 12 months. As of December 31, 2015, the amount of accrued interest and penalties was $0.1 million and $0.1 million, respectively.

The changes in our gross unrecognized tax benefits during the years ended December 31 are as follows (in thousands):

	2015			2014			2013
Unrecognized tax benefit – beginning of year	$	414		$	652		$	741
Increases related to prior year tax positions		42			4			137
Increases related to current year tax positions		6			13			15
Decreases related to prior year tax positions		(129	)		(255	)		(241	)
Settlements with taxing authorities		—			—			—
Lapse of statutes of limitations		—			—			—
Unrecognized tax benefit – end of year	$	333		$	414		$	652

Leases

12 Months Ended

Dec. 31, 2015

Leases [Abstract]

Leases

(10)

Leases

We lease office space, warehouses, freight distribution centers, terminal yards and equipment under non-cancelable capital and operating lease arrangements. Except where we deliver services within facilities provided by our customers, we lease all warehouse and freight distribution centers used in our logistics operations, often in connection with a specific customer program. Where facilities are substantially dedicated to a single customer and our lease is with an independent property owner, we attempt to align lease terms with the expected duration of the underlying customer program.

In most cases, we expect our facility leases will be renewed or replaced by other leases in the ordinary course of business. Where possible, we contractually secure the recovery of certain occupancy costs, including rent, during the term of a customer program. Future minimum rental payments pursuant to leases that have an initial or remaining non-cancelable lease term in excess of one year as of December 31, 2015 are as follows (in thousands):

			Operating Leases
Years Ending December 31	Capital Leases		With Affiliates		With Third Parties		Total
2016	$	989	$	10,272	$	9,817	$	21,078
2017		731		8,996		7,542		17,269
2018		380		5,469		4,016		9,865
2019		—		4,242		1,845		6,087
2020		—		3,078		1,337		4,415
Thereafter		—		15,388		115		15,503
Total required payments		2,100	$	47,445	$	24,672	$	74,217
Less amounts representing interest (0.8% to 4.5%)		119
Present value of minimum lease payments		1,981
Less current maturities		916
	$	1,065

At December 31, 2015 and 2014, assets under capital leases, consisting primarily of machinery and equipment, had a cost of approximately $5.4 million and $6.9 million, respectively, and accumulated amortization of $1.5 million and $0.9 million, respectively. Included in depreciation and amortization expense in the accompanying Consolidated Statements of Income for the years ended December 31, 2015, 2014 and 2013 is amortization expense associated with the capital leases of $0.9 million, $0.8 million and $0.1 million, respectively.

(10)	Leases—continued

Rental expense for facilities, vehicles and other equipment leased from third parties under operating leases approximated $19.2 million, $21.9 million and $14.4 million for the years ended December 31, 2015, 2014 and 2013.

- Definition

The entire disclosure for lessor entity's leasing arrangements for operating, capital and leveraged leases.

+ References + Details

Comprehensive Income

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Comprehensive Income

(11)	Comprehensive Income

Comprehensive income includes the following for the years ended December 31 (in thousands):

	2015			2014			2013
Unrealized holding (losses) gains on available-for-sale investments arising during the period:
Gross amount	$	(1,597	)	$	620		$	2,160
Income tax benefit (expense)		582			(208	)		(614	)
Net of tax amount	$	(1,015	)	$	412		$	1,546
Realized (gains) on available-for-sale investments reclassified into income:
Realized gains on sales of available-for-sale investments	$	(347	)	$	—		$	(107	)
Other-than-temporary impairment losses		230			—			—
Total before tax		(117	)		—			(107	)
Income tax expense		45			—			39
Net of tax amount	$	(72	)	$	—		$	(68	)
Foreign currency translation adjustments	$	(2,252	)	$	(1,631	)	$	(227	)

The unrealized holding gains and losses on available-for-sale investments represent mark-to-market adjustments net of related income taxes.

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e689-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.3-04)
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Retirement Plans

12 Months Ended

Dec. 31, 2015

Compensation And Retirement Disclosure [Abstract]

Retirement Plans

(12)	Retirement Plans

We offer 401(k) defined contribution plans to our employees. The plans are administered by a company controlled by our principal shareholders and include different matching provisions depending on which subsidiary or affiliate is involved. In the plans available to certain employees not subject to collective bargaining agreements, we matched contributions up to $600 annually for each employee who is not considered highly compensated through December 31, 2008, after which some matching contributions were suspended as a response to market conditions at certain subsidiaries. Three other 401(k) plans are provided to employees of specific operations and offer matching contributions that range from zero to $2,080 per participant annually. The total expense for contributions for 401(k) plans, including plans related to collective bargaining agreements, was $0.2 million for the year ended December 31, 2015, and $0.4 million for each of the years ended December 31, 2014 and 2013.

In connection with a collective bargaining agreement that covered 12 Canadian employees at December 31, 2015, we are required to make defined contributions into the Canada Wide Industrial Pension Plan. At December 31, 2015 and 2014, the required contributions totaled approximately $38,000 and $30,000, respectively.

Stock Based Compensation

12 Months Ended

Dec. 31, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Based Compensation

(13)	Stock Based Compensation

On April 23, 2014, our Board of Directors adopted the 2014 Amended and Restated Stock Incentive Plan, or the Plan. The Plan was approved by our shareholders at the 2014 Annual Meeting and became effective as of the date it was adopted by the Board of Directors. The Plan replaced our 2004 Stock Incentive Plan and carried forward the shares of common stock that remained available for issuance under the 2004 Stock Incentive Plan. The grants may be made in the form of stock options, restricted stock bonuses, restricted stock purchase rights, stock appreciation rights, phantom stock units, restricted stock units or unrestricted common stock. Restricted stock awards currently outstanding under the 2004 Stock Incentive Plan will remain outstanding in accordance with the terms of that plan.

On December 23, 2015, the Company granted 50,000 shares of restricted stock to certain of its employees, including 5,000 shares to its Chief Financial Officer. The restricted stock grants have a grant date fair value of $14.93 per share, based on the closing price of the Company’s stock, of which 25% vested immediately, and an additional 25% will vest in three equal increments on each December 20 in 2016, 2017 and 2018.

(13)	Stock Based Compensation—continued

On March 5, 2015, the Company granted 10,000 shares of restricted stock to its Chief Executive Officer. The restricted stock grants have a grant date fair value of $25.18 per share, based on the closing price of the Company’s stock, of which 25% vested immediately and an additional 25% will vest on each anniversary of the grant through March 5, 2018, subject to continued employment with the Company. On April 29, 2015, the Company granted an additional 20,000 shares of restricted stock to the Chief Executive Officer. These restricted stock grants have a grant date fair value of $22.03 per share, based on the closing price of the Company’s stock, of which 25% vested immediately and an additional 25% will vest in three equal increments on each March 5 in 2016, 2017 and 2018.

On December 20, 2012, the Company granted 178,137 shares of restricted stock to certain of its employees. The restricted stock grants have a grant date fair value of $16.42 per share, based on the closing price of the Company’s stock, of which 25% vested immediately and an additional 20% will vest on each anniversary of the grant through December 20, 2016, subject to continued employment of the grantee with the Company.

A grantee’s vesting of restricted stock awards may be accelerated under certain conditions, including retirement.

A summary of the status of our non-vested shares as of December 31, 2015, and changes during the year ended December 31, 2015, is presented below:

	Shares			Weighted Average Grant Date Fair Value
Non-vested at January 1, 2015		16,446		$	16.42
Granted		80,000		$	17.99
Vested		(28,221	)	$	17.53
Forfeited		—		$	—
Balance at December 31, 2015		68,225		$	17.80

During the years ended December 31, 2015, 2014 and 2013, the total grant date fair value of vested shares recognized as compensation cost was $0.5 million, $1.5 million and $0.6 million, respectively. As of December 31, 2015, there was $1.2 million of total unrecognized compensation cost related to non-vested share-based compensation arrangements granted under the Plan. That cost is expected to be recognized on a straight-line basis over the remaining vesting period. As a result, the Company expects to recognize stock-based compensation costs of $0.5 million, $0.4 million, and $0.3 million during 2016, 2017 and 2018, respectively.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2015

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

(14)	Commitments and Contingencies

Our principal commitments relate to long-term real estate leases and payment obligations to equipment vendors.

We are involved in certain claims and pending litigation arising from the ordinary conduct of business. We also provide accruals for claims within our self-insured retention amounts. Based on the knowledge of the facts, and in certain cases, opinions of outside counsel, in the Company’s opinion the resolution of these claims and pending litigation will not have a material effect on our financial position, results of operations or cash flows.

At December 31, 2015, approximately 26% of our employees in the United States, Canada and Colombia, and 95% of our employees in Mexico are subject to collective bargaining agreements that are renegotiated periodically, less than 2% of which are subject to contracts that expire in 2016.

Earnings Per Share

12 Months Ended

Dec. 31, 2015

Earnings Per Share [Abstract]

Earnings Per Share

(15)	Earnings Per Share

Basic earnings per common share amounts are based on the weighted average number of common shares outstanding, excluding outstanding non-vested restricted stock. Diluted earnings per common share include dilutive common stock equivalents determined by the treasury stock method. For the years ended December 31, 2015, 2014 and 2013, there were 2,273, 31,230 and 95,656 weighted average non-vested shares of restricted stock, respectively, included in the denominator for the calculation of diluted earnings per share.

(15)	Earnings Per Share—continued

For the year ended December 31, 2015, 30,725 shares of non-vested restricted stock were excluded from the calculation of diluted earnings per share because such shares were anti-dilutive. No shares were excluded from the calculation of diluted earnings per share for the years ended December 31, 2014 or 2013.

Quarterly Financial Data (unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (unaudited)

(16)	Quarterly Financial Data (unaudited)

	2015
	1^st quarter		2^nd quarter		3^rd quarter		4^th quarter
	(in thousands, except per share information)
Operating revenue	$	263,561	$	295,007	$	284,214	$	285,991
Operating income		15,067		22,920		16,944		18,464
Income before income taxes		13,332		21,584		15,001		15,088
Provision for income taxes		5,168		8,300		5,754		5,782
Net income	$	8,164	$	13,284	$	9,247	$	9,306
Earnings per common share:
Basic	$	0.27	$	0.44	$	0.32	$	0.33
Diluted	$	0.27	$	0.44	$	0.32	$	0.33
Weighted average number of common shares outstanding:
Basic		29,992		29,979		28,661		28,380
Diluted		29,998		29,980		28,661		28,382

	2014
	1^st quarter		2^nd quarter		3^rd quarter		4^th quarter
	(in thousands, except per share information)
Operating revenue	$	279,364	$	307,549	$	302,128	$	302,480
Operating income		14,629		24,413		23,000		18,793
Income before income taxes		13,143		22,075		21,052		16,829
Provision for income taxes		5,019		8,442		7,958		6,310
Net income	$	8,124	$	13,633	$	13,094	$	10,519
Earnings per common share:
Basic	$	0.27	$	0.45	$	0.44	$	0.35
Diluted	$	0.27	$	0.45	$	0.44	$	0.35
Weighted average number of common shares outstanding:
Basic		30,112		30,054		29,947		29,946
Diluted		30,158		30,092		29,982		29,952

Segment Reporting

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Segment Reporting

(17)	Segment Reporting

(17)	Segment Reporting—continued

The following tables summarize information about our reportable segments as of and for the fiscal years ended December 31, 2015, 2014 and 2013 (in thousands):

2015	Transportation		Logistics		Other			Total
Operating revenues	$	721,437	$	406,822	$	514		$	1,128,773
Eliminated inter-segment revenues		3,659		6,170		—			9,829
Depreciation and amortization		11,153		23,565		155			34,873
Income from operations		28,683		43,848		864			73,395
Capital expenditures		2,034		23,797		426			26,257
Total assets		219,759		253,845		37,394			510,998

2014	Transportation		Logistics		Other			Total
Operating revenues	$	778,603	$	412,507	$	411		$	1,191,521
Eliminated inter-segment revenues		5,160		7,473		—			12,633
Depreciation and amortization		11,256		21,507		290			33,053
Income from operations		34,931		50,892		(4,988	)		80,835
Capital expenditures		16,444		42,413		927			59,784
Total assets		246,190		247,155		35,669			529,014

2013	Transportation		Logistics		Other			Total
Operating revenues	$	705,557	$	327,498	$	437		$	1,033,492
Eliminated inter-segment revenues		679		179		—			858
Depreciation and amortization		11,557		7,861		268			19,686
Income from operations		28,537		58,724		(2,768	)		84,493
Capital expenditures		9,084		6,426		1,525			17,035
Total assets		221,428		229,947		38,761			490,136

We provide a portfolio of transportation and logistics services to a wide range of customers throughout the United States and in Mexico, Canada, Colombia, Europe and other countries around the world. Revenues for selected services as provided to the chief operating decision maker are as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Transportation services	$	696,134	$	769,308	$	706,998
Value-added services		285,258		284,496		195,086
Intermodal services		147,381		137,717		131,408
Total	$	1,128,773	$	1,191,521	$	1,033,492

Revenues are attributed to geographic areas based upon completion of the underlying service at the point of delivery. In some instances, we are paid one rate for “round-trip” services that originate and terminate in Canada, but have destinations in the United States. In those instances we allocate half of the total revenue to Canada and half to the United States (in thousands).

	Year Ended December 31,
	2015		2014		2013
United States	$	1,087,690	$	1,153,154	$	992,511
Mexico		27,676		24,860		23,440
Canada		8,577		9,786		14,029
Europe		1,843		2,419		2,278
Colombia		1,837		—		—
Other		1,150		1,302		1,234
Total	$	1,128,773	$	1,191,521	$	1,033,492

(17)	Segment Reporting—continued

Net long-lived property and equipment assets are presented in the table below (in thousands):

	Year Ended December 31,
	2015		2014
United States	$	173,009	$	172,360
Mexico		3,674		5,671
Canada		500		38
Colombia		6		—
Total	$	177,189	$	178,069

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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-Publisher FASB
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+ Details

Subsequent Events

12 Months Ended

Dec. 31, 2015

Subsequent Events [Abstract]

Subsequent Events

(18)	Subsequent Events

On February 25, 2016, our Board of Directors declared a quarterly cash dividend of $0.07 per share of common stock, which is payable to shareholders of record at the close of business on March 7, 2016 and is expected to be paid on March 17, 2016. Declaration of future cash dividends is subject to final determination by the Board of Directors each quarter after its review of our financial condition, results of operations, capital requirements, any legal or contractual restrictions on the payment of dividends and other factors the Board of Directors deems relevant.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Business

(a)

Business

Basis of Presentation

(b)

Basis of Presentation

Our fiscal year consists of four quarters, each with thirteen weeks.

Certain immaterial reclassifications have been made to the prior financial statements in order for them to conform to the December 31, 2015 presentation.

Use of Estimates

(c)

Use of Estimates

Cash and Cash Equivalents

(d)

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short-term, highly liquid investments with an original maturity of three months or less.

(1)	Summary of Significant Accounting Policies—continued

(d)

Cash and Cash Equivalents - continued

Marketable Securities

(e)

Marketable Securities

The cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities by type were as follows (in thousands):

	Cost		Gross unrealized holding gains		Gross unrealized holding (losses)			Fair Value
At December 31, 2015
Equity Securities	$	10,614	$	3,958	$	(1,141	)	$	13,431
At December 31, 2014
Equity Securities	$	9,779	$	4,825	$	(295	)	$	14,309

	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
At December 31, 2015
Equity securities	$	3,099	$	987	$	345	$	154	$	3,444	$	1,141
At December 31, 2014
Equity securities	$	1,380	$	197	$	146	$	98	$	1,526	$	295

(1)	Summary of Significant Accounting Policies—continued

(e)

Marketable Securities—continued

Accounts Receivable

(f)

Accounts Receivable

Inventories

(g)

Inventories

At December 31, inventory consists of the following (in thousands):

	2015		2014
Raw materials and supplies	$	7,660	$	6,903
Finished goods		962		1,347
	$	8,622	$	8,250

Property and Equipment

(h)

Property and Equipment

Description		Life in Years
Transportation equipment		5 - 15
Other operating assets		3 - 15
Information technology equipment		2 - 5
Buildings and related assets		10 - 39

The amounts recorded for depreciation expense were $25.8 million, $23.1 million, and $17.6 million for the years ended December 31, 2015, 2014, and 2013, respectively.

Intangible Assets

(1)	Summary of Significant Accounting Policies—continued

(i)

Intangible Assets

Our identifiable intangible assets as of December 31, 2015 and 2014 are as follows (in thousands):

	2015			2014
Indefinite Lived Intangibles:
Trademarks	$	2,500		$	2,500
Definite Lived Intangibles:
Agent and customer relationships		65,060			65,060
Customer contracts		20,600			20,600
Less: accumulated amortization		(43,495	)		(34,340	)
Intangible assets, net	$	42,165		$	51,320
Total Identifiable Intangible Assets	$	44,665		$	53,820

Estimated amortization expense by year is as follows (in thousands):

2016	$	7,423
2017		5,995
2018		2,519
2019		2,254
2020		1,970
Thereafter		22,004
Total	$	42,165

The amounts recorded for amortization expense were $9.2 million, $9.9 million, and $2.1 million for the years ended December 31, 2015, 2014 and 2013, respectively.

Goodwill

(j)

Goodwill

(1)	Summary of Significant Accounting Policies—continued

(j)

Goodwill—continued

The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 are as follows (in thousands):

Balance as of January 1, 2014	$	74,589
Bull's Eye acquisitions		163
Westport adjustments		(268	)
Balance as of December 31, 2014		74,484
Business acquisitions		—
Balance as of December 31, 2015	$	74,484

Long-Lived Assets

(k)

Long-Lived Assets

Contingent Consideration

(l)

Contingent Consideration

Fair Value of Financial Instruments

(m)

Fair Value of Financial Instruments

Deferred Compensation

(n)

Deferred Compensation

Closing Costs

(1)	Summary of Significant Accounting Policies—continued

(o)

Closing Costs

Revenue and Related Expenses

(p)

Revenue and Related Expenses

Insurance & Claims

(q)

Insurance & Claims

(1)	Summary of Significant Accounting Policies—continued

(q)

Insurance & Claims—continued

Our insurance expense varies primarily based upon the frequency and severity of our accident experience, insurance rates, coverage limits, and self-insured retention amounts.

Stock Based Compensation

(r)

Stock Based Compensation

Income Taxes

(s)

Income Taxes

Foreign Currency Translation

(t)

Foreign Currency Translation

Segment Information

(u)

Segment Information

Concentrations of Credit Risk

(1)	Summary of Significant Accounting Policies—continued

(v)

Concentrations of Credit Risk

Recent Accounting Pronouncements

(w)

Recent Accounting Pronouncements

(1)	Summary of Significant Accounting Policies—continued

(w)

Recent Accounting Pronouncements - continued

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of Cost, Gross Unrealized Holding Gains Losses, and Fair Value of Available-for-Sale Securities

The cost, gross unrealized holding gains, gross unrealized holding losses, and fair value of available-for-sale securities by type were as follows (in thousands):

	Cost		Gross unrealized holding gains		Gross unrealized holding (losses)			Fair Value
At December 31, 2015
Equity Securities	$	10,614	$	3,958	$	(1,141	)	$	13,431
At December 31, 2014
Equity Securities	$	9,779	$	4,825	$	(295	)	$	14,309

Schedule of Gross Unrealized Holding Losses and Fair Value of Marketable Securities

	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
At December 31, 2015
Equity securities	$	3,099	$	987	$	345	$	154	$	3,444	$	1,141
At December 31, 2014
Equity securities	$	1,380	$	197	$	146	$	98	$	1,526	$	295

Schedule of Inventories

At December 31, inventory consists of the following (in thousands):

	2015		2014
Raw materials and supplies	$	7,660	$	6,903
Finished goods		962		1,347
	$	8,622	$	8,250

Estimated Useful Lives of Assets

Description		Life in Years
Transportation equipment		5 - 15
Other operating assets		3 - 15
Information technology equipment		2 - 5
Buildings and related assets		10 - 39

Schedule of Identifiable Intangible Assets

Our identifiable intangible assets as of December 31, 2015 and 2014 are as follows (in thousands):

	2015			2014
Indefinite Lived Intangibles:
Trademarks	$	2,500		$	2,500
Definite Lived Intangibles:
Agent and customer relationships		65,060			65,060
Customer contracts		20,600			20,600
Less: accumulated amortization		(43,495	)		(34,340	)
Intangible assets, net	$	42,165		$	51,320
Total Identifiable Intangible Assets	$	44,665		$	53,820

Estimated Amortization Expense by Year

Estimated amortization expense by year is as follows (in thousands):

2016	$	7,423
2017		5,995
2018		2,519
2019		2,254
2020		1,970
Thereafter		22,004
Total	$	42,165

Changes in Carrying Amount of Goodwill

(1)	Summary of Significant Accounting Policies—continued

(j)

Goodwill—continued

The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2014 are as follows (in thousands):

Balance as of January 1, 2014	$	74,589
Bull's Eye acquisitions		163
Westport adjustments		(268	)
Balance as of December 31, 2014		74,484
Business acquisitions		—
Balance as of December 31, 2015	$	74,484

Business Combinations (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Pro Forma Consolidated Results of Operations Regarding Acquisition

	Pro Forma Twelve Months Ended December 31, 2013		Pro Forma Twelve Months Ended December 31, 2012
Operating revenues	$	1,121,459	$	1,095,393
Operating income	$	93,972	$	66,848
Net Income	$	54,791	$	44,143
Earnings per common share:
Basic	$	1.82	$	1.47
Diluted	$	1.82	$	1.47

Bull's-Eye Express, Inc. [Member]

Schedule of Allocation of Purchase Price

Intangible assets	$	1,007
Property and equipment		400
Goodwill (tax deductible)		163
	$	1,570

Westport USA Holding, LLC [Member]

Schedule of Allocation of Purchase Price

The final allocation of the purchase price was as follows (in thousands):

Current assets	$	24,492
Property and equipment		17,081
Goodwill		56,356
Intangible assets		57,800
Other long-term assets		474
Current liabilities		(2,932	)
Capital lease obligations		(5,164	)
Deferred tax liabilities, net		(25,083	)
	$	123,024

Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2015

Receivables [Abstract]

Summary of Activity in Allowance for Doubtful Accounts

Following is a summary of the activity in the allowance for doubtful accounts for the years ended December 31 (in thousands):

	2015			2014			2013
Balance at beginning of year	$	5,207		$	2,688		$	2,515
Provision for doubtful accounts		3,004			3,504			1,515
Acquisition of businesses		—			—			163
Uncollectible accounts written off		(3,038	)		(985	)		(1,505	)
Balance at end of year	$	5,173		$	5,207		$	2,688

Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment

Property and equipment at December 31 consists of the following (in thousands):

	2015			2014
Transportation equipment	$	185,351		$	186,344
Land, buildings and related assets		73,096			67,472
Other operating assets		66,290			54,433
Information technology equipment		18,660			15,261
Construction in process		5,607			4,169
		349,004			327,679
Less accumulated depreciation		(171,815	)		(149,610	)
Total	$	177,189		$	178,069

Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2015

Payables And Accruals [Abstract]

Schedule of Accrued Expenses

Accrued expenses consist of the following items at December 31 (in thousands):

	2015		2014
Payroll related items	$	6,833	$	8,827
Driver escrow liabilities		4,486		4,519
Commissions, taxes and other		7,670		8,995
Total	$	18,989	$	22,341

Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Details of Debt

Debt is comprised of the following (in thousands):

	Interest Rates at	December 31,
	December 31, 2015	2015		2014
Outstanding Debt:
PNC $120 million revolving credit facility
$55.0 million LIBOR rate advance	LIBOR + 1.50%	$	55,000	$	—
$4.6 million domestic rate advance	Prime + 0.50%		4,569		—
Key equipment notes	3.75%		83,578		—
Comerica syndicated credit facility
$40 million term loan	LIBOR + 2.50%		40,000		—
$20 million revolving credit facility
$6.0 million LIBOR rate advance	LIBOR + 2.00%		6,000		—
$5.8 million base rate advance	Prime + 1.00%		5,766
Flagstar Bank $40 million unsecured term loan	LIBOR + 3.50%		40,000		—
UBS secured borrowing facility	LIBOR + 1.10%		—		—
Debt paid upon refinancing:
Comerica syndicated credit facility
$120 million revolving credit facility	NA		—		59,500
Swing Line sub-facility	NA		—		370
$60 million equipment financing facility	NA		—		55,428
$50 million term loan	NA		—		50,000
$70 million term loan B	NA		—		70,000
			234,913		235,298
Less current portion			61,488		9,593
Total long-term debt		$	173,425	$	225,705

Summary of Maturities of Principal Repayment Obligations

The following table reflects the maturities of our principal repayment obligations as of December 31, 2015 (in thousands):

Years Ending December 31	PNC Revolving Credit Facility		KeyBank Equipment Promissory Notes		Comerica Revolving Credit Facility		Comerica Term Loan		Flagstar Unsecured Term Loan		Total
2016	$	—	$	15,488	$	—	$	6,000	$	40,000	$	61,488
2017		—		16,078		—		6,000		—		22,078
2018		—		16,692		—		6,000		—		22,692
2019		—		17,329		—		6,000		—		23,329
2020		59,569		17,991		11,766		16,000		—		105,326
Total	$	59,569	$	83,578	$	11,766	$	40,000	$	40,000	$	234,913

Fair Value Measurement and Disclosures (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Financial Assets Measured at Fair Value on Recurring Basis

	December 31, 2015
	Level 1		Level 2		Level 3		Fair Value Measurement
Assets
Cash equivalents	$	96	$	—	$	—	$	96
Marketable securities		13,431		—		—		13,431
Total Assets	$	13,527	$	—	$	—	$	13,527

	December 31, 2014
	Level 1		Level 2		Level 3		Fair Value Measurement
Assets
Cash equivalents	$	21	$	—	$	—	$	21
Marketable securities		14,309		—		—		14,309
Total Assets	$	14,330	$	—	$	—	$	14,330

Summary of Carrying Values and Estimated Fair Values of Promissory Notes

The carrying values and estimated fair values of these promissory notes at December 31, 2015 is summarized as follows:

2015

Carrying Value

Estimated Fair

Value

Equipment promissory notes

83,578

Transactions with Affiliates (Tables)

12 Months Ended

Dec. 31, 2015

Schedule of Amounts Charged to UTSI

Following is a schedule of cost incurred and included in operating expenses for services provided by affiliates for the years ended December 31 (in thousands):

	2015		2014		2013
Administrative support services	$	3,774	$	2,459	$	2,367
Truck fueling and maintenance		1,983		1,320		1,774
Real estate rent and related costs		13,174		10,472		11,352
Insurance and employee benefit plans		46,173		36,073		32,710
Contracted transportation services		969		930		311
Total	$	66,073	$	51,254	$	48,514

Schedule of Services Provided to Affiliates

Following is a schedule of services provided to CenTra and affiliates for the years ended December 31 (in thousands):

	2015		2014		2013
Transportation and intermodal services	$	400	$	308	$	9,800
Truck fueling and maintenance		—		87		184
Administrative and customer support services		—		71		113
Total	$	400	$	466	$	10,097

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Summary of Income Related to U.S. and Non-U.S. Operations

A summary of income related to U.S. and non-U.S. operations are as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Operations
U.S. Domestic	$	62,781	$	70,079	$	74,697
Foreign		2,224		3,020		6,219
Total pre-tax income	$	65,005	$	73,099	$	80,916

Provision for Income Taxes Attributable to Income from Continuing Operations

The provision for income taxes attributable to income from continuing operations for the years ended December 31 consists of the following (in thousands):

	2015			2014		2013
Current:
U.S. Federal	$	19,544		$	20,822	$	22,797
State		4,469			4,838		3,609
Foreign		449			590		1,442
		24,462			26,250		27,848
Deferred:
U.S. Federal		1,183			489		1,922
State		(730	)		891		524
Foreign		89			99		50
		542			1,479		2,496
Total	$	25,004		$	27,729	$	30,344

Deferred Income Tax Assets and Liabilities

(9)	Income Taxes—continued

Deferred income tax assets and liabilities at December 31 consist of the following (in thousands):

	2015						2014
	Current			Long-term			Current			Long-term
Domestic deferred tax assets:
Allowance for doubtful accounts	$	1,809		$	—		$	1,391		$	—
Other assets		—			4,275			—			3,083
Accrued expenses		4,868			—			5,285			—
Total domestic deferred tax assets		6,677			4,275			6,676			3,083
Domestic deferred tax liabilities:
Prepaid expenses		(383	)		—			(1,290	)		—
Marketable securities		—			(1,015	)		—			(1,687	)
Intangible assets		—			(15,987	)		—			(18,404	)
Property and equipment		—			(34,177	)		—			(29,061	)
Total domestic deferred tax liabilities		(383	)		(51,179	)		(1,290	)		(49,152	)
Foreign deferred tax asset
Other assets		133			470			—			590
Valuation allowance - foreign		—			(406	)		—			(404	)
Total foreign deferred tax asset		133			64			—			186
Net deferred tax asset (liability)	$	6,427		$	(46,840	)	$	5,386		$	(45,883	)

Income Tax Expense Attributable to Income from Continuing Operations Differs from Statutory Rates

Income tax expense attributable to income from continuing operations differs from the statutory rates as follows:

	2015			2014			2013
Federal statutory rate		35	%		35	%		35	%
Non-deductible (benefit) expense		0	%		-2	%		-1	%
State, net of federal benefit		4	%		5	%		3	%
Foreign		-1	%		0	%		0	%
Effective tax rate		38	%		38	%		37	%

Changes in Company's Gross Unrecognized Tax Benefits

The changes in our gross unrecognized tax benefits during the years ended December 31 are as follows (in thousands):

	2015			2014			2013
Unrecognized tax benefit – beginning of year	$	414		$	652		$	741
Increases related to prior year tax positions		42			4			137
Increases related to current year tax positions		6			13			15
Decreases related to prior year tax positions		(129	)		(255	)		(241	)
Settlements with taxing authorities		—			—			—
Lapse of statutes of limitations		—			—			—
Unrecognized tax benefit – end of year	$	333		$	414		$	652

Leases (Tables)

12 Months Ended

Dec. 31, 2015

Leases [Abstract]

Schedule Of Future Minimum Rental Payments For Capital Leases And Operating Leases Table Text Block

Future minimum rental payments pursuant to leases that have an initial or remaining non-cancelable lease term in excess of one year as of December 31, 2015 are as follows (in thousands):

			Operating Leases
Years Ending December 31	Capital Leases		With Affiliates		With Third Parties		Total
2016	$	989	$	10,272	$	9,817	$	21,078
2017		731		8,996		7,542		17,269
2018		380		5,469		4,016		9,865
2019		—		4,242		1,845		6,087
2020		—		3,078		1,337		4,415
Thereafter		—		15,388		115		15,503
Total required payments		2,100	$	47,445	$	24,672	$	74,217
Less amounts representing interest (0.8% to 4.5%)		119
Present value of minimum lease payments		1,981
Less current maturities		916
	$	1,065

Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2015

Equity [Abstract]

Components of Comprehensive Income

Comprehensive income includes the following for the years ended December 31 (in thousands):

	2015			2014			2013
Unrealized holding (losses) gains on available-for-sale investments arising during the period:
Gross amount	$	(1,597	)	$	620		$	2,160
Income tax benefit (expense)		582			(208	)		(614	)
Net of tax amount	$	(1,015	)	$	412		$	1,546
Realized (gains) on available-for-sale investments reclassified into income:
Realized gains on sales of available-for-sale investments	$	(347	)	$	—		$	(107	)
Other-than-temporary impairment losses		230			—			—
Total before tax		(117	)		—			(107	)
Income tax expense		45			—			39
Net of tax amount	$	(72	)	$	—		$	(68	)
Foreign currency translation adjustments	$	(2,252	)	$	(1,631	)	$	(227	)

Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Status of Nonvested Shares

A summary of the status of our non-vested shares as of December 31, 2015, and changes during the year ended December 31, 2015, is presented below:

	Shares			Weighted Average Grant Date Fair Value
Non-vested at January 1, 2015		16,446		$	16.42
Granted		80,000		$	17.99
Vested		(28,221	)	$	17.53
Forfeited		—		$	—
Balance at December 31, 2015		68,225		$	17.80

Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

	2015
	1^st quarter		2^nd quarter		3^rd quarter		4^th quarter
	(in thousands, except per share information)
Operating revenue	$	263,561	$	295,007	$	284,214	$	285,991
Operating income		15,067		22,920		16,944		18,464
Income before income taxes		13,332		21,584		15,001		15,088
Provision for income taxes		5,168		8,300		5,754		5,782
Net income	$	8,164	$	13,284	$	9,247	$	9,306
Earnings per common share:
Basic	$	0.27	$	0.44	$	0.32	$	0.33
Diluted	$	0.27	$	0.44	$	0.32	$	0.33
Weighted average number of common shares outstanding:
Basic		29,992		29,979		28,661		28,380
Diluted		29,998		29,980		28,661		28,382

	2014
	1^st quarter		2^nd quarter		3^rd quarter		4^th quarter
	(in thousands, except per share information)
Operating revenue	$	279,364	$	307,549	$	302,128	$	302,480
Operating income		14,629		24,413		23,000		18,793
Income before income taxes		13,143		22,075		21,052		16,829
Provision for income taxes		5,019		8,442		7,958		6,310
Net income	$	8,124	$	13,633	$	13,094	$	10,519
Earnings per common share:
Basic	$	0.27	$	0.45	$	0.44	$	0.35
Diluted	$	0.27	$	0.45	$	0.44	$	0.35
Weighted average number of common shares outstanding:
Basic		30,112		30,054		29,947		29,946
Diluted		30,158		30,092		29,982		29,952

Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

Summary of Company's Reportable Segment Information

The following tables summarize information about our reportable segments as of and for the fiscal years ended December 31, 2015, 2014 and 2013 (in thousands):

2015	Transportation		Logistics		Other			Total
Operating revenues	$	721,437	$	406,822	$	514		$	1,128,773
Eliminated inter-segment revenues		3,659		6,170		—			9,829
Depreciation and amortization		11,153		23,565		155			34,873
Income from operations		28,683		43,848		864			73,395
Capital expenditures		2,034		23,797		426			26,257
Total assets		219,759		253,845		37,394			510,998

2014	Transportation		Logistics		Other			Total
Operating revenues	$	778,603	$	412,507	$	411		$	1,191,521
Eliminated inter-segment revenues		5,160		7,473		—			12,633
Depreciation and amortization		11,256		21,507		290			33,053
Income from operations		34,931		50,892		(4,988	)		80,835
Capital expenditures		16,444		42,413		927			59,784
Total assets		246,190		247,155		35,669			529,014

2013	Transportation		Logistics		Other			Total
Operating revenues	$	705,557	$	327,498	$	437		$	1,033,492
Eliminated inter-segment revenues		679		179		—			858
Depreciation and amortization		11,557		7,861		268			19,686
Income from operations		28,537		58,724		(2,768	)		84,493
Capital expenditures		9,084		6,426		1,525			17,035
Total assets		221,428		229,947		38,761			490,136

Revenues for Selected Services by Operating Segments

Revenues for selected services as provided to the chief operating decision maker are as follows (in thousands):

	Year Ended December 31,
	2015		2014		2013
Transportation services	$	696,134	$	769,308	$	706,998
Value-added services		285,258		284,496		195,086
Intermodal services		147,381		137,717		131,408
Total	$	1,128,773	$	1,191,521	$	1,033,492

Revenues Attributed to Geographic Areas

Revenues are attributed to geographic areas

	Year Ended December 31,
	2015		2014		2013
United States	$	1,087,690	$	1,153,154	$	992,511
Mexico		27,676		24,860		23,440
Canada		8,577		9,786		14,029
Europe		1,843		2,419		2,278
Colombia		1,837		—		—
Other		1,150		1,302		1,234
Total	$	1,128,773	$	1,191,521	$	1,033,492

Net Long-Lived Property and Equipment Assets by Geographic Areas

Net long-lived property and equipment assets are presented in the table below (in thousands):

	Year Ended December 31,
	2015		2014
United States	$	173,009	$	172,360
Mexico		3,674		5,671
Canada		500		38
Colombia		6		—
Total	$	177,189	$	178,069

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Company Segment	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Accounting Policies [Line Items]
Checks issued in excess of funds on deposit		$ 13,400
Change in checks issued in excess of funds on deposit	$ (13,400)	13,400	$ (13,400)
Proceeds from sale of marketable securities	441		520
Cost on sale of marketable securities	100		400
Realized gain on sale of marketable securities	300		100
Equity securities at book value	4,600
Temporary impairment loss of equity securities	$ 1,100
Number of investments in publicly traded companies \| Company	35
Depreciation expense	$ 25,800	23,100	17,600
Weighted average amortization period	12 years
Amounts recorded for amortization expense	$ 9,200	9,900	2,100
Goodwill	$ 74,484	74,484	74,589
Deferred compensation bonus annual installments	5 years
Fuel surcharges	$ 75,700	$ 119,700	$ 118,600
Number of reportable segments \| Segment	2
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Accounting Policies [Line Items]
Percentage of revenues from major customers	28.90%	28.40%	33.80%
General Motors [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Accounting Policies [Line Items]
Percentage of revenues from major customers	11.40%	9.70%	12.40%
Top Ten Customers [Member] \| Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Accounting Policies [Line Items]
Percentage of revenues from major customers	36.90%
Transportation [Member]
Accounting Policies [Line Items]
Goodwill	$ 18,200	$ 18,200
Logistics [Member]
Accounting Policies [Line Items]
Goodwill	$ 56,300	$ 56,300
Customer contracts [Member]
Accounting Policies [Line Items]
Weighted average amortization period	3 years
Agent and customer relationships [Member]
Accounting Policies [Line Items]
Weighted average amortization period	15 years
Minimum [Member]
Accounting Policies [Line Items]
Estimated useful lives	3 years
Maximum [Member]
Accounting Policies [Line Items]
Estimated useful lives	19 years

Summary of Significant Accounting Policies - Schedule of Cost, Gross Unrealized Holding Gains Losses, and Fair Value of Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Investments Debt And Equity Securities [Abstract]
Equity Securities, Cost	$ 10,614	$ 9,779
Equity Securities, Gross unrealized holding gains	3,958	4,825
Equity Securities, Gross unrealized holding (losses)	(1,141)	(295)
Marketable securities	$ 13,431	$ 14,309

Summary of Significant Accounting Policies - Schedule of Gross Unrealized Holding Losses and Fair Value of Marketable Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Equity securities, Total, Unrealized Losses	$ 1,100
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity securities, Less than 12 Months Fair Value	3,099	$ 1,380
Equity securities, Less than 12 Months Unrealized Losses	987	197
Equity securities, 12 Months or Greater Fair Value	345	146
Equity securities, 12 Months or Greater Unrealized Losses	154	98
Equity securities, Total, Fair Value	3,444	1,526
Equity securities, Total, Unrealized Losses	$ 1,141	$ 295

Summary of Significant Accounting Policies - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Raw materials and supplies	$ 7,660	$ 6,903
Finished goods	962	1,347
Inventory, Net	$ 8,622	$ 8,250

Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Detail)	12 Months Ended
	Dec. 31, 2015
Minimum [Member] \| Transportation equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Minimum [Member] \| Other operating assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	3 years
Minimum [Member] \| Information technology equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	2 years
Minimum [Member] \| Buildings and related assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	10 years
Maximum [Member] \| Transportation equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	15 years
Maximum [Member] \| Other operating assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	15 years
Maximum [Member] \| Information technology equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	5 years
Maximum [Member] \| Buildings and related assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, useful life	39 years

Summary of Significant Accounting Policies - Schedule of Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Less: accumulated amortization	$ (43,495)	$ (34,340)
Intangible assets, net	42,165	51,320
Total Identifiable Intangible Assets	44,665	53,820
Agent and customer relationships [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	65,060	65,060
Customer contracts [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Finite lived intangible assets gross	20,600	20,600
Trademarks [Member]
Finite Lived And Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets excluding goodwill	$ 2,500	$ 2,500

Summary of Significant Accounting Policies - Estimated Amortization Expense by Year (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
2016	$ 7,423
2017	5,995
2018	2,519
2019	2,254
2020	1,970
Thereafter	22,004
Intangible assets, net	$ 42,165	$ 51,320

Summary of Significant Accounting Policies - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Beginning Balance	$ 74,484	$ 74,589
Business Acquisitions	0
Ending Balance	$ 74,484	74,484
Bull's-Eye Express, Inc. [Member]
Goodwill [Line Items]
Business Acquisitions		163
Westport USA Holding, LLC [Member]
Goodwill [Line Items]
Business Adjustments		$ (268)

Business Combinations - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Weighted average amortization period		12 years
Acquisition related costs				$ 0.7
Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets		3 years
Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets		19 years
Customer Contracts and Customer Relationships [Member] \| Minimum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets		5 months
Customer Contracts and Customer Relationships [Member] \| Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets		19 years
Bull's-Eye Express, Inc. [Member]
Business Acquisition [Line Items]
Cost of acquisition	$ 1.6
Business acquisition cost of acquired cash paid			$ 1.3
Business acquisition debt forgiveness			0.3
Bull's-Eye Express, Inc. [Member] \| Customer relationships [Member]
Business Acquisition [Line Items]
Weighted average amortization period		7 years
Westport USA Holding, LLC [Member]
Business Acquisition [Line Items]
Cost of acquisition				$ 123.0
Business acquisition cost of acquired cash paid			$ 1.4

Business Combinations - Schedule of Allocation of Purchase Price (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Dec. 19, 2013
Business Acquisition [Line Items]
Goodwill	$ 74,484	$ 74,484		$ 74,589
Bull's-Eye Express, Inc. [Member]
Business Acquisition [Line Items]
Intangible assets			$ 1,007
Property and equipment			400
Goodwill (tax deductible)			163
Total assets and liabilities acquired			$ 1,570
Westport USA Holding, LLC [Member]
Business Acquisition [Line Items]
Intangible assets					$ 57,800
Property and equipment					17,081
Current assets					24,492
Goodwill					56,356
Other long-term assets					474
Current liabilities					(2,932)
Capital lease obligations					(5,164)
Deferred tax liabilities, net					(25,083)
Total assets and liabilities acquired					$ 123,024

Business Combinations - Schedule of Pro Forma Consolidated Results of Operations Regarding Acquisition (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]
Operating revenues	$ 1,121,459	$ 1,095,393
Operating income	93,972	66,848
Net Income	$ 54,791	$ 44,143
Basic	$ 1.82	$ 1.47
Diluted	$ 1.82	$ 1.47

Accounts Receivable - Summary of Activity in Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Balance at beginning of year	$ 5,207	$ 2,688	$ 2,515
Provision for doubtful accounts	3,004	3,504	1,515
Acquisition of businesses	0	0	163
Uncollectible accounts written off	(3,038)	(985)	(1,505)
Balance at end of year	$ 5,173	$ 5,207	$ 2,688

Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment	$ 349,004	$ 327,679
Less accumulated depreciation	(171,815)	(149,610)
Total	177,189	178,069
Transportation equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	185,351	186,344
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	73,096	67,472
Other operating assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	66,290	54,433
Information technology equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	18,660	15,261
Construction in process [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 5,607	$ 4,169

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Payables And Accruals [Abstract]
Payroll related items	$ 6,833	$ 8,827
Driver escrow liabilities	4,486	4,519
Commissions, taxes and other	7,670	8,995
Total	$ 18,989	$ 22,341

Debt - Details of Debt (Detail) - USD ($) $ in Thousands	12 Months Ended
Debt - Details of Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Outstanding Debt:
Outstanding Debt	$ 234,913	$ 235,298
Current portion of long-term debt	61,488	9,593
Total long-term debt	$ 173,425	225,705
Key equipment notes [Member]
Outstanding Debt:
Credit facility, Interest Rates	3.75%
Outstanding Debt	$ 83,578
Revolving Credit Facility [Member] \| Comerica syndicated credit facility, $120 million revolving credit facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	NA
Outstanding Debt		59,500
Swing Line sub-facility [Member] \| Comerica syndicated credit facility, swing line sub-facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	NA
Outstanding Debt		370
$55.0 million LIBOR rate advance [Member] \| Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	LIBOR + 1.50%
Outstanding Debt	$ 55,000
$4.6 million domestic rate advance [Member] \| Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	Prime + 0.50%
Outstanding Debt	$ 4,569
Term Loan [Member] \| Comerica syndicated credit facility, $40 million term loan [Member]
Outstanding Debt:
Credit facility, Interest Rates	LIBOR + 2.50%
Outstanding Debt	$ 40,000
Term Loan [Member] \| Comerica syndicated credit facility, $50 million term loan [Member]
Outstanding Debt:
Credit facility, Interest Rates	NA
Outstanding Debt		50,000
$6.0 million LIBOR rate advance [Member] \| Revolving Credit Facility [Member] \| Comerica syndicated credit facility, $20 million revolving credit facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	LIBOR + 2.00%
Outstanding Debt	$ 6,000
$5.8 million base rate advance [Member] \| Revolving Credit Facility [Member] \| Comerica syndicated credit facility, $20 million revolving credit facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	Prime + 1.00%
Outstanding Debt	$ 5,766
Unsecured Term Loan [Member] \| Flagstar Bank $40 million unsecured term loan [Member]
Outstanding Debt:
Credit facility, Interest Rates	LIBOR + 3.50%
Outstanding Debt	$ 40,000
Secured Debt [Member] \| UBS secured borrowing facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	LIBOR + 1.10%
Equipment Financing Facility [Member] \| Comerica syndicated credit facility, $60 million equipment financing facility [Member]
Outstanding Debt:
Credit facility, Interest Rates	NA
Outstanding Debt		55,428
Term Loan B [Member] \| Comerica syndicated credit facility, $70 million term loan B [Member]
Outstanding Debt:
Credit facility, Interest Rates	NA
Outstanding Debt		$ 70,000

Debt - Details of Debt (Parenthetical) (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($)
PNC $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 120.0
PNC $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| $55.0 million LIBOR rate advance [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	55.0
PNC $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| $4.6 million domestic rate advance [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 4.6
PNC $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member] \| $55.0 million LIBOR rate advance [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	1.50%
PNC $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| Prime [Member] \| $4.6 million domestic rate advance [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	0.50%
Comerica syndicated credit facility, $40 million term loan [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 40.0
Comerica syndicated credit facility, $40 million term loan [Member] \| LIBOR [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	2.50%
Comerica syndicated credit facility, $20 million revolving credit facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 20.0
Comerica syndicated credit facility, $20 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| $6.0 million LIBOR rate advance [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	6.0
Comerica syndicated credit facility, $20 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| $5.8 million base rate advance [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 5.8
Comerica syndicated credit facility, $20 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| LIBOR [Member] \| $6.0 million LIBOR rate advance [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	2.00%
Comerica syndicated credit facility, $20 million revolving credit facility [Member] \| Revolving Credit Facility [Member] \| Prime [Member] \| $5.8 million base rate advance [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	1.00%
Flagstar Bank $40 million unsecured term loan [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 40.0
Flagstar Bank $40 million unsecured term loan [Member] \| LIBOR [Member] \| Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	3.50%
UBS secured borrowing facility [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	1.10%
UBS secured borrowing facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate above variable base rate	1.10%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 120.0
Comerica syndicated credit facility, $60 million equipment financing facility [Member] \| Equipment Financing Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	60.0
Comerica syndicated credit facility, $50 million term loan [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	50.0
Comerica syndicated credit facility, $70 million term loan B [Member] \| Term Loan B [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 70.0

Debt - December 2015 Debt Refinancing - Additional Information (Detail) $ in Millions	Dec. 23, 2015 USD ($)
Syndicated Comerica Bank Revolving Credit
Line of Credit Facility [Line Items]
Borrowed under the credit facility	$ 234.9

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Debt - Revolving Credit Facility - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015 USD ($) Option	Dec. 31, 2014 USD ($)
Line of Credit Facility [Line Items]
Letters of credit	$ 0
PNC $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility fees percentage	0.25%
Comerica syndicated credit facility, $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility, expiration date	Aug. 28, 2017
Interest accrued percentage		2.02%
Debt instrument, carrying amount		$ 59,500,000
Credit facility available for borrowings pursuant to the agreement		104,100,000
Number of interest rate options \| Option	2
Federal funds effective rate plus	1.00%
Interest rate above LIBOR	1.00%
Premiums or penalties resulting from prepayment	$ 0
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Facility fee	0.25%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Facility fee	0.50%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Net eligible accounts receivable [Member]
Line of Credit Facility [Line Items]
Credit facility, secured by asset		122,400,000
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Credit facility, Interest Rates	LIBOR rate plus 1.0%.
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Eurodollar-based [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	interest at 30, 60 or 90-day LIBOR rates plus an applicable margin, which varied from 1.35% to 2.10% based on our ratio of total debt to earnings before interest, taxes, depreciation and amortization (“EBITDA”), as defined.
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Eurodollar-based [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.35%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Eurodollar-based [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.10%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Base rate [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	base rate, as defined, plus an applicable margin, which also varied based on our ratio of total debt to EBITDA in a range from 0.35% to 1.10%.
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Base rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	0.35%
Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Base rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.10%
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	$ 120,000,000
Increase in revolving credit facility	$ 30,000,000
Credit facility, expiration date	Dec. 23, 2020
Debt instrument, face amount	$ 120,000,000
Debt instrument, carrying amount	59,600,000
Credit facility available for borrowings pursuant to the agreement	24,800,000
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member] \| Net eligible accounts receivable [Member]
Line of Credit Facility [Line Items]
Credit facility, secured by asset	93,700,000
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member] \| $55.0 million LIBOR rate advance [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 55,000,000
Credit facility, Interest Rates	LIBOR + 1.50%
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member] \| $55.0 million LIBOR rate advance [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage	1.92%
Interest rate above variable base rate	1.50%
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member] \| $4.6 million domestic rate advance [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 4,600,000
Credit facility, Interest Rates	Prime + 0.50%
Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member] \| $4.6 million domestic rate advance [Member] \| Prime [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage	4.00%
Interest rate above variable base rate	0.50%
Revolving Credit Facility [Member] \| Comerica syndicated credit facility, $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 120,000,000
Credit facility, Interest Rates	NA
Swing Line sub-facility [Member]
Line of Credit Facility [Line Items]
Borrowed under the credit facility	$ 0	400,000
Letters of credit		$ 0
Interest accrued percentage		4.10%
Swing Line sub-facility [Member] \| Comerica Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	7,000,000
Swing Line sub-facility [Member] \| Key Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	3,000,000
Swing Line sub-facility [Member] \| PNC $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	10,200,000
Swing Line sub-facility [Member] \| PNC $120 million revolving credit facility [Member] \| Letter Of Credit
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	3,000,000
Swing Line sub-facility [Member] \| Comerica syndicated credit facility, $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	10,000,000
Swing Line sub-facility [Member] \| Comerica syndicated credit facility, $120 million revolving credit facility [Member] \| Letter Of Credit
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	$ 5,000,000

Debt - Equipment Credit Agreement - Additional Information (Detail) - Equipment Credit Agreement [Member] $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Installment
Line of Credit Facility [Line Items]
Borrowed under the credit facility	$ 83.6
Fixed interest rate	3.75%
Fixed charge coverage ratio	110.00%
Promissory Notes [Member]
Line of Credit Facility [Line Items]
Number of installments \| Installment	60
Frequency of installments	Monthly
Debt Instrument, liquidation value	$ 93.0
Debt instrument, carrying amount	$ 70.5

Debt - Revolving Credit and Term Loan Agreement - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015 USD ($) Installment	Dec. 31, 2014 USD ($)
Line of Credit Facility [Line Items]
Letters of credit	$ 0
Swing Line sub-facility [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage		4.10%
Borrowed under the credit facility	0	$ 400,000
Letters of credit		$ 0
$60,000,000 Revolving Credit and Term Loan Agreement [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 60,000,000
Credit facility, expiration date	Dec. 23, 2020
Line of credit facility, interest rate description	The applicable margin fluctuates based on Westport’s total debt to EBITDA ratio, as defined in the Credit Agreement.
Credit facility, Interest Rates	LIBOR
Borrowed under the credit facility	$ 6,800,000
Letters of credit	0
Debt instrument, carrying amount	$ 11,800,000
Repayments of borrowings under term loan and revolving credit facility	50% (which percentage shall be reduced to 0% subject to Westport attaining a certain leverage ratio) of Westport’s annual excess cash flow, as defined; 100% of the net cash proceeds if we sell Westport’s machining division; 50% of net proceeds from certain equity issuances; 100% of proceeds from the issuance of certain indebtedness; and 100% of net proceeds from the sale of certain assets, insurance and condemnation proceeds.
Debt instrument, covenant term	The Credit Agreement includes financial covenants requiring Westport to maintain a minimum fixed charge coverage ratio, minimum quarterly EBITDA amounts, as defined in the Credit Agreement, and a maximum debt to EBITDA ratio, as well as customary affirmative and negative covenants and events of default. At December 31, 2015, we were in compliance with the debt covenants.
Equity interest in Westport	100.00%
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Rate management agreement [Member]
Line of Credit Facility [Line Items]
Notional amount	$ 12,000,000
Duration of agreement	2 years
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Net eligible accounts receivable [Member]
Line of Credit Facility [Line Items]
Credit facility, secured by asset	$ 17,600,000
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Inventory [Member]
Line of Credit Facility [Line Items]
Credit facility, secured by asset	$ 7,100,000
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Facility fee	0.25%
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Facility fee	0.50%
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 20,000,000
Line of credit facility, first quarterly interest payment commencement date	Mar. 01, 2016
Line of credit facility, frequency of payment term	Interest on the unpaid balance of all revolving credit facility and swing line base rate advances is payable quarterly in arrears commencing on March 1, 2016, and on the first day of each June, September, December and March thereafter. Interest on the unpaid balance of each Eurodollar-based advance of the revolving credit facility is payable on the last day of the applicable Eurodollar interest period. Interest on the unpaid balance of each quoted rate based advance of the swing line is payable on the last day of the applicable quoted rate interest period.
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Swing Line sub-facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	$ 4,000,000
Borrowed under the credit facility	0
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Letter Of Credit
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	2,000,000
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 40,000,000
Credit facility, expiration date	Dec. 23, 2020
Number of installments \| Installment	20
Frequency of installments	Quarterly
Term loan installment amount	$ 1,500,000
Debt Instrument, term	5 years
Debt instrument, first quarterly interest payment commencement date	Jan. 01, 2016
Debt instrument, frequency of payment term	Interest on the unpaid principal of all term loan base rate advances is payable quarterly in arrears commencing on January 1, 2016, and on the first day of each April, July, October and January thereafter. Interest on the unpaid principal of each Eurodollar-based advance of the term loan is payable on the last day of the applicable Eurodollar interest period.
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| Term Loan [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage	2.92%
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| $6.0 million LIBOR rate advance [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 6,000,000
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| $6.0 million LIBOR rate advance [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage	2.42%
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| $5.8 million base rate advance [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 5,800,000
$60,000,000 Revolving Credit and Term Loan Agreement [Member] \| $5.8 million base rate advance [Member] \| Prime [Member]
Line of Credit Facility [Line Items]
Interest accrued percentage	4.50%

Debt - Loan and Financing Agreement - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Outstanding Debt	$ 234,913,000	$ 235,298,000
$40,000,000 Loan and financing agreement [Member]
Line of Credit Facility [Line Items]
Outstanding Debt	$ 40,000,000
Interest accrued percentage	3.92%
$40,000,000 Loan and financing agreement [Member] \| LIBOR [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	3.50%
$40,000,000 Loan and financing agreement [Member] \| Unsecured Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 40,000,000
Credit facility, expiration date	Jul. 15, 2016
$40,000,000 Loan and financing agreement [Member] \| Secured real estate term notes [Member] \| UTSI Finance [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 40,000,000

Debt - Comerica Syndicated Credit Facility - Additional Information (Detail)	Dec. 31, 2015 USD ($)
Comerica syndicated credit facility [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 300,000,000
Credit facility, borrowing capacity	5,000,000
Equipment Financing Facility [Member] \| Comerica syndicated credit facility, $60 million equipment financing facility [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	60,000,000
Term Loan [Member] \| Comerica syndicated credit facility, $50 million term loan [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	50,000,000
Term Loan B [Member] \| Comerica syndicated credit facility, $70 million term loan B [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	70,000,000
Revolving Credit Facility [Member] \| Comerica syndicated credit facility, $120 million revolving credit facility [Member]
Line of Credit Facility [Line Items]
Debt instrument, face amount	$ 120,000,000

Debt - Equipment Credit Facility - Additional Information (Detail) - Comerica syndicated credit facility, $60 million equipment financing facility [Member]	12 Months Ended
	Dec. 31, 2015 Installment Option	Dec. 31, 2014
Line of Credit Facility [Line Items]
Credit facility, expiration date	Aug. 28, 2015
Frequency of installments	Quarterly
Number of installments \| Installment	28
Number of interest rate options \| Option	2
Credit facility fees percentage	0.50%
Interest accrued percentage		2.52%
Eurodollar-based [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	Eurodollar-based advances bear interest at 30, 60 or 90-day LIBOR rates plus an applicable margin, which varied from 1.60% to 2.60% based on our ratio of total debt to EBITDA.
Eurodollar-based [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.60%
Eurodollar-based [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.60%
Base rate [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	Base rate advances bore interest at a base rate, as defined, plus an applicable margin, which also varied based on our ratio of total debt to EBITDA in a range from 0.60% to 1.60%.
Base rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	0.60%
Base rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.60%

Debt - Term Loan - Additional Information (Detail) - Comerica syndicated credit facility, $50 million term loan [Member]	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Credit facility, expiration date	Aug. 28, 2017
Interest accrued percentage		3.17%
Base rate [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	Base rate advances bore interest at a defined base rate plus an applicable margin which varied from 1.50% to 2.25%, based on our ratio of total debt to EBITDA.
Base rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.50%
Base rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.25%
Eurodollar-based [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	which bear interest at 30, 60 or 90-day LIBOR rates plus an applicable margin which varied from 2.50% to 3.25%, based on our ratio of total debt to EBITDA.
Eurodollar-based [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.50%
Eurodollar-based [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	3.25%

Debt - Term Loan B - Additional Information (Detail) - Comerica syndicated credit facility, $70 million term loan B [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Credit facility, expiration date	Aug. 28, 2017
Interest accrued percentage		3.17%
Repayments of borrowings under term loan facility	50% (which percentage shall be reduced to 0% subject to the Company attaining a certain leverage ratio) of our annual excess cash flow, as defined; 100% of net cash proceeds of certain asset sales; and 100% of certain insurance and condemnation proceeds.
Prepayment of term loan		$ 1.0
Maximum senior debt to EBITDA	250.00%
Maximum total debt to EBITDA	300.00%
Fixed charge coverage ratio	125.00%
Base rate [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	Base rate advances bore interest at a defined base rate plus an applicable margin which varied from 1.50% to 2.25%, based on our ratio of total debt to EBITDA.
Base rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	1.50%
Base rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.25%
Eurodollar-based [Member]
Line of Credit Facility [Line Items]
Line of credit facility, interest rate description	which bore interest at 30, 60 or 90-day LIBOR rates plus an applicable margin which varied from 2.50% to 3.25%, based on our ratio of total debt to EBITDA.
Eurodollar-based [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	2.50%
Eurodollar-based [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Interest rate above variable base rate	3.25%

Debt - UBS Secured Borrowing Facility - Additional Information (Detail) - UBS secured borrowing facility [Member] - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Interest rate above variable base rate	1.10%
Interest accrued percentage	1.53%
Borrowed under the credit facility	$ 0	$ 0
Credit facility, borrowing capacity	$ 7,400,000	$ 6,900,000

- Definition

+ References + Details

Debt - Summary of Maturities of Principal Repayment Obligations (Detail) $ in Thousands	Dec. 31, 2015 USD ($)
Debt Maturities [Line Items]
2016	$ 61,488
2017	22,078
2018	22,692
2019	23,329
2020	105,326
Total	234,913
Key equipment notes [Member]
Debt Maturities [Line Items]
2016	15,488
2017	16,078
2018	16,692
2019	17,329
2020	17,991
Total	83,578
PNC Revolving Credit Facility [Member] \| PNC $120 million revolving credit facility [Member]
Debt Maturities [Line Items]
2020	59,569
Total	59,569
Comerica Revolving Credit Facility [Member]
Debt Maturities [Line Items]
2020	11,766
Total	11,766
Comerica Term Loan [Member]
Debt Maturities [Line Items]
2016	6,000
2017	6,000
2018	6,000
2019	6,000
2020	16,000
Total	40,000
Flagstar Bank $40 million unsecured term loan [Member]
Debt Maturities [Line Items]
2016	40,000
Total	$ 40,000

Fair Value Measurement and Disclosures - Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities	$ 13,431	$ 14,309
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	96	21
Marketable securities	13,431	14,309
Total Assets	13,527	14,330
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	96	21
Marketable securities	13,431	14,309
Total Assets	$ 13,527	$ 14,330

Fair Value Measurement and Disclosures - Summary of Carrying Values and Estimated Fair Values of Promissory Notes (Detail) - Equipment Promissory Notes [Member]	Dec. 31, 2015 USD ($)
Carrying Reported Amount Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	$ 83,578
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument	$ 83,578

Transactions with Affiliates - Schedule of Amounts Charged to UTSI (Detail) - Affiliates [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	$ 66,073	$ 51,254	$ 48,514
Administrative support services [Member]
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	3,774	2,459	2,367
Truck fueling and maintenance [Member]
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	1,983	1,320	1,774
Real estate rent and related costs [Member]
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	13,174	10,472	11,352
Insurance and employee benefit plans [Member]
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	46,173	36,073	32,710
Contracted transportation services [Member]
Related Party Transaction [Line Items]
Cost incurred for services provided by CenTra and affiliates	$ 969	$ 930	$ 311

Transactions with Affiliates - Additional Information (Detail)					1 Months Ended	12 Months Ended
	Aug. 19, 2015 USD ($) shares	Jul. 08, 2015 USD ($) $ / shares shares	Jun. 30, 2015 shares	Mar. 05, 2015 USD ($) shares	Jul. 31, 2015 USD ($) ft² a	Dec. 31, 2015 USD ($) Facility Tractor Trailer Equipment shares	Dec. 31, 2014 USD ($) Tractor Trailer shares	Dec. 31, 2013 USD ($) Tractor	Jul. 14, 2015 shares
Related Party Transaction [Line Items]
Occupancy of facilities either on monthly or contractual basis \| Facility						43
Insurance, claims and other receivables						$ 11,500,000	$ 10,700,000
Due to affiliates						$ 3,413,000	2,896,000
Costs related to an underwritten public offering							$ 500,000	$ 500,000
Number of used tractors purchased \| Tractor						0	10	39
Number of used trailer purchased \| Trailer						0	1
Amounts paid for legal services						$ 1,500	$ 92,000	$ 7,000
Due from affiliates						$ 1,924,000	$ 1,562,000
Number of equipment sold to affiliates \| Equipment						0
Number of used trailers sold \| Trailer							41
Proceed from sale of used trailers							$ 82,000
Gain Loss on sale of Trailers							$ 82,000
Common stock, shares outstanding \| shares						28,398,900	29,997,784		28,380,679
Dutch Auction Tender Offer [Member]
Related Party Transaction [Line Items]
Number of common stock authorized to be repurchased \| shares			1,000,000
Additional percentage of common stock that can be repurchased			2.00%
Share repurchase price per share \| $ / shares		$ 21.50
Number of shares repurchased \| shares		1,599,605
Total purchase price		$ 34,400,000
Dutch Auction Tender Offer [Member] \| Minimum [Member]
Related Party Transaction [Line Items]
Share repurchase price per share \| $ / shares		$ 21.50
Dutch Auction Tender Offer [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Share repurchase price per share \| $ / shares		$ 23.50
Freight [Member]
Related Party Transaction [Line Items]
Assets acquiring charges							$ 100,000
Director [Member] \| Restricted Stock [Member]
Related Party Transaction [Line Items]
Shares acquisition by exercise right of first refusal , Shares \| shares				25,000
Shares acquisition by exercise right of first refusal , Value				$ 622,500
Chief Executive Officer [Member] \| Restricted Stock [Member]
Related Party Transaction [Line Items]
Shares acquisition by exercise right of first refusal , Shares \| shares	2,500
Shares acquisition by exercise right of first refusal , Value	$ 50,825
Manuel J. Moroun [Member] \| Dutch Auction Tender Offer [Member]
Related Party Transaction [Line Items]
Number of shares repurchased \| shares		1,486,060
Cedar Investments LLC [Member]
Related Party Transaction [Line Items]
Maximum area provided for logistics facility \| ft²					500,000
Area of land in acres \| a					33
Lease agreement term					124 months
Leases monthly minimum payments					$ 256,500
Affiliates [Member] \| Snow Removal Equipment [Member]
Related Party Transaction [Line Items]
Cost of purchase from an affiliate						$ 18,000
Affiliates [Member] \| Tractor [Member]
Related Party Transaction [Line Items]
Cost of purchase from an affiliate							$ 800,000	$ 1,600,000

Transactions with Affiliates - Schedule of Services Provided to Affiliates (Detail) - Affiliates [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Services provided to affiliates	$ 400	$ 466	$ 10,097
Transportation and intermodal services [Member]
Related Party Transaction [Line Items]
Services provided to affiliates	$ 400	308	9,800
Truck fueling and maintenance [Member]
Related Party Transaction [Line Items]
Services provided to affiliates		87	184
Administrative and customer support services [Member]
Related Party Transaction [Line Items]
Services provided to affiliates		$ 71	$ 113

Income Taxes - Summary of Income Related to U.S. and Non-U.S. Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Before Income Taxes [Line Items]
Income before provision for income taxes	$ 65,005	$ 73,099	$ 80,916
U.S. Domestic [Member]
Income Before Income Taxes [Line Items]
Income before provision for income taxes	62,781	70,079	74,697
Foreign [Member]
Income Before Income Taxes [Line Items]
Income before provision for income taxes	$ 2,224	$ 3,020	$ 6,219

Income Taxes - Provision for Income Taxes Attributable to Income from Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
U.S. Federal									$ 19,544	$ 20,822	$ 22,797
State									4,469	4,838	3,609
Foreign									449	590	1,442
Current income taxes provision, Total									24,462	26,250	27,848
Deferred:
U.S. Federal									1,183	489	1,922
State									(730)	891	524
Foreign									89	99	50
Deferred income taxes provision, Total									542	1,479	2,496
Total	$ 5,782	$ 5,754	$ 8,300	$ 5,168	$ 6,310	$ 7,958	$ 8,442	$ 5,019	$ 25,004	$ 27,729	$ 30,344

Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Foreign deferred tax asset
Net deferred tax (liability)	$ (46,840)	$ (45,883)
Current [Member]
Domestic deferred tax assets:
Deferred tax assets	6,677	6,676
Domestic deferred tax liabilities:
Deferred tax liabilities	(383)	(1,290)
Foreign deferred tax asset
Deferred tax assets	133
Net deferred tax asset	6,427	5,386
Current [Member] \| Allowance for doubtful accounts [Member]
Domestic deferred tax assets:
Deferred tax assets	1,809	1,391
Long-term [Member]
Domestic deferred tax assets:
Deferred tax assets	4,275	3,083
Domestic deferred tax liabilities:
Deferred tax liabilities	(51,179)	(49,152)
Foreign deferred tax asset
Deferred tax assets	64	186
Valuation allowance-foreign	(406)	(404)
Net deferred tax (liability)	(46,840)	(45,883)
Long-term [Member] \| Marketable securities [Member]
Domestic deferred tax liabilities:
Deferred tax liabilities	(1,015)	(1,687)
Long-term [Member] \| Intangible assets [Member]
Domestic deferred tax liabilities:
Deferred tax liabilities	(15,987)	(18,404)
Other assets [Member] \| Current [Member]
Foreign deferred tax asset
Deferred tax assets	133
Other assets [Member] \| Long-term [Member]
Domestic deferred tax assets:
Deferred tax assets	4,275	3,083
Foreign deferred tax asset
Deferred tax assets	470	590
Accrued expenses [Member] \| Current [Member]
Domestic deferred tax assets:
Deferred tax assets	4,868	5,285
Prepaid expenses [Member] \| Current [Member]
Domestic deferred tax liabilities:
Deferred tax liabilities	(383)	(1,290)
Property and equipment [Member] \| Long-term [Member]
Domestic deferred tax liabilities:
Deferred tax liabilities	$ (34,177)	$ (29,061)

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Undistributed earnings of foreign subsidiaries	$ 8,200
Unrecognized tax benefit in certain tax positions	333	$ 414	$ 652	$ 741
Accrued interest	100
Accrued penalties	$ 100

Income Taxes - Income Tax Expense Attributable to Income from Continuing Operations Differs from Statutory Rates (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
Non-deductible (benefit) expense	(0.00%)	(2.00%)	(1.00%)
State, net of federal benefit	4.00%	5.00%	3.00%
Foreign	(1.00%)	0.00%	0.00%
Effective tax rate	38.00%	38.00%	37.00%

Income Taxes - Changes in Company's Gross Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Unrecognized tax benefit - beginning of year	$ 414	$ 652	$ 741
Increases related to prior year tax positions	42	4	137
Increases related to current year tax positions	6	13	15
Decreases related to prior year tax positions	(129)	(255)	(241)
Unrecognized tax benefit - end of year	$ 333	$ 414	$ 652

Leases - Schedule of Future Minimum Rental Payments Under Non-Cancelable Capital Leases and Operating Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Operating Leases Future Minimum Payments Due [Line Items]
2016	$ 989
2017	731
2018	380
2019	0
2020	0
Thereafter	0
Total required payments, capital lease	2,100
Less amounts representing interest (0.8% to 4.5%)	119
Present value of minimum lease payments	1,981
Less current maturities	916	$ 1,051
Capital leases future minimum rental payment, Total	1,065	$ 1,980
2016	21,078
2017	17,269
2018	9,865
2019	6,087
2020	4,415
Thereafter	15,503
Total required payments	74,217
Operating Leases with Affiliates [Member]
Operating Leases Future Minimum Payments Due [Line Items]
2016	10,272
2017	8,996
2018	5,469
2019	4,242
2020	3,078
Thereafter	15,388
Total required payments	47,445
Operating Leases With Third Parties [Member]
Operating Leases Future Minimum Payments Due [Line Items]
2016	9,817
2017	7,542
2018	4,016
2019	1,845
2020	1,337
Thereafter	115
Total required payments	$ 24,672

Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Lease Disclosure [Line Items]
Amortization expense capital leased assets	$ 0.9	$ 0.8	$ 0.1
Rental expense for facilities, vehicles and other equipment leased from third parties	19.2	21.9	$ 14.4
Property, Plant and Equipment [Member]
Lease Disclosure [Line Items]
Assets under capital leases	5.4	6.9
Amortization expense capital leased assets	$ 1.5	$ 0.9

Comprehensive Income - Components of Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Unrealized holding (losses) gains on available-for-sale investments, Gross amount	$ (1,597)	$ 620	$ 2,160
Unrealized holding (losses) gains on available-for-sale investments, Income tax benefit (expense)	582	(208)	(614)
Unrealized holding (losses) gains on available-for-sale investments, Net of tax amount	(1,015)	412	1,546
Realized (gains) on sales of available-for-sale investments	(347)		(107)
Realized (gains) on available-for-sale investments reclassified into income, Other-than-temporary impairment losses	230
Realized (gains) on available-for-sale investments reclassified into income, Total before tax	(117)		(107)
Realized (gains) on available-for-sale investments reclassified into income, Income tax expense	45		39
Realized (gains) on available-for-sale investments reclassified into income, Net of tax amount	(72)		(68)
Foreign currency translation adjustments	$ (2,252)	$ (1,631)	$ (227)

Retirement Plans - Additional Information (Detail)	12 Months Ended
Retirement Plans - Additional Information (Detail)	Dec. 31, 2015 USD ($) Employee	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2008 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension plan contribution				$ 600
Expense of retirement plans	$ 200,000	$ 400,000	$ 400,000
Canadian [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of employees covered \| Employee	12
Required contributions into Canada Wide Industrial Pension Plan	$ 38,000	$ 30,000
Minimum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Matching contributions offered to employee	0
Maximum [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Matching contributions offered to employee	$ 2,080

Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions					12 Months Ended
	Dec. 23, 2015	Apr. 29, 2015	Mar. 05, 2015	Dec. 20, 2012	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants vested	25.00%			25.00%
Total unrecognized compensation cost					$ 1.2
Total fair value of shares vested					0.5	$ 1.5	$ 0.6
Share based compensation cost is expected to be recognized on a straight-line basis in fiscal 2016					0.5
Share based compensation cost is expected to be recognized on a straight-line basis in fiscal 2017					0.4
Share based compensation cost is expected to be recognized on a straight-line basis in fiscal 2018					$ 0.3
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants vested		25.00%	25.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock granted	50,000			178,137	80,000
Restricted stock grant date fair value per share	$ 14.93			$ 16.42	$ 17.99
Restricted Stock [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock granted	5,000	20,000	10,000
Restricted stock grant date fair value per share		$ 22.03	$ 25.18
Equal Increments on Each December 20 in 2016, 2017 and 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional restricted stock grants vested per year					25.00%
Grants Vesting on March 5, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional restricted stock grants vested per year					25.00%
Equal Increments on Each March 5 in 2016, 2017 and 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional restricted stock grants vested per year					25.00%
Grants Vesting on December 20, 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional restricted stock grants vested per year					20.00%

Stock Based Compensation - Summary of Status of Nonvested Shares (Detail) - Restricted Stock [Member] - $ / shares			12 Months Ended
	Dec. 23, 2015	Dec. 20, 2012	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Nonvested, Beginning Balance			16,446
Shares, Granted	50,000	178,137	80,000
Shares, Vested			(28,221)
Shares, Ending Balance			68,225
Weighted Average Grant Date Fair Value, Beginning Balance			$ 16.42
Weighted Average Grant Date Fair Value, Granted	$ 14.93	$ 16.42	17.99
Weighted Average Grant Date Fair Value, Vested			17.53
Weighted Average Grant Date Fair Value, Ending Balance			$ 17.80

Commitments and Contingencies - Additional Information (Detail) - Workforce Subject to Collective Bargaining Arrangements [Member] - Unionized Employees Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2015
Maximum [Member]
Concentration Risk [Line Items]
Percentage of employees agreements that expire in 2016	2.00%
United States, Canada and Columbia [Member]
Concentration Risk [Line Items]
Percentage of revenues from major customers	26.00%
Mexico [Member]
Concentration Risk [Line Items]
Percentage of revenues from major customers	95.00%

Earnings Per Share - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Abstract]
Weighted average non-vested shares of restricted shares	2,273	31,230	95,656
Antidilutive securities excluded from computation of earnings per share, amount	30,725	0	0

Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Operating revenue	$ 285,991	$ 284,214	$ 295,007	$ 263,561	$ 302,480	$ 302,128	$ 307,549	$ 279,364	$ 1,128,773	$ 1,191,521	$ 1,033,492
Operating income	18,464	16,944	22,920	15,067	18,793	23,000	24,413	14,629	73,395	80,835	84,493
Income before income taxes	15,088	15,001	21,584	13,332	16,829	21,052	22,075	13,143
Provision for income taxes	5,782	5,754	8,300	5,168	6,310	7,958	8,442	5,019	25,004	27,729	30,344
Net income	$ 9,306	$ 9,247	$ 13,284	$ 8,164	$ 10,519	$ 13,094	$ 13,633	$ 8,124	$ 40,001	$ 45,370	$ 50,572
Earnings per common share:
Basic	$ 0.33	$ 0.32	$ 0.44	$ 0.27	$ 0.35	$ 0.44	$ 0.45	$ 0.27	$ 1.37	$ 1.51	$ 1.68
Diluted	$ 0.33	$ 0.32	$ 0.44	$ 0.27	$ 0.35	$ 0.44	$ 0.45	$ 0.27	$ 1.37	$ 1.51	$ 1.68
Weighted average number of common shares outstanding:
Basic	28,380	28,661	29,979	29,992	29,946	29,947	30,054	30,112	29,233	30,013	30,064
Diluted	28,382	28,661	29,980	29,998	29,952	29,982	30,092	30,158	29,235	30,044	30,160

Segment Reporting - Summary of Company's Reportable Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 285,991	$ 284,214	$ 295,007	$ 263,561	$ 302,480	$ 302,128	$ 307,549	$ 279,364	$ 1,128,773	$ 1,191,521	$ 1,033,492
Depreciation and amortization									34,873	33,053	19,686
Income from operations	18,464	$ 16,944	$ 22,920	$ 15,067	18,793	$ 23,000	$ 24,413	$ 14,629	73,395	80,835	84,493
Capital expenditures									26,257	59,784	17,035
Total assets	510,998				529,014				510,998	529,014	490,136
Operating Segments [Member] \| Transportation [Member]
Segment Reporting Information [Line Items]
Revenues									721,437	778,603	705,557
Depreciation and amortization									11,153	11,256	11,557
Income from operations									28,683	34,931	28,537
Capital expenditures									2,034	16,444	9,084
Total assets	219,759				246,190				219,759	246,190	221,428
Operating Segments [Member] \| Logistics [Member]
Segment Reporting Information [Line Items]
Revenues									406,822	412,507	327,498
Depreciation and amortization									23,565	21,507	7,861
Income from operations									43,848	50,892	58,724
Capital expenditures									23,797	42,413	6,426
Total assets	253,845				247,155				253,845	247,155	229,947
Other [Member]
Segment Reporting Information [Line Items]
Revenues									514	411	437
Depreciation and amortization									155	290	268
Income from operations									864	(4,988)	(2,768)
Capital expenditures									426	927	1,525
Total assets	$ 37,394				$ 35,669				37,394	35,669	38,761
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues									9,829	12,633	858
Intersegment Eliminations [Member] \| Transportation [Member]
Segment Reporting Information [Line Items]
Revenues									3,659	5,160	679
Intersegment Eliminations [Member] \| Logistics [Member]
Segment Reporting Information [Line Items]
Revenues									$ 6,170	$ 7,473	$ 179

Segment Reporting - Revenues for Selected Services by Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting [Abstract]
Transportation services									$ 696,134	$ 769,308	$ 706,998
Value-added services									285,258	284,496	195,086
Intermodal services									147,381	137,717	131,408
Total operating revenues	$ 285,991	$ 284,214	$ 295,007	$ 263,561	$ 302,480	$ 302,128	$ 307,549	$ 279,364	$ 1,128,773	$ 1,191,521	$ 1,033,492

Segment Reporting - Revenues Attributed to Geographic Areas (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 285,991	$ 284,214	$ 295,007	$ 263,561	$ 302,480	$ 302,128	$ 307,549	$ 279,364	$ 1,128,773	$ 1,191,521	$ 1,033,492
United States [Member]
Segment Reporting Information [Line Items]
Revenues									1,087,690	1,153,154	992,511
Mexico [Member]
Segment Reporting Information [Line Items]
Revenues									27,676	24,860	23,440
Canada [Member]
Segment Reporting Information [Line Items]
Revenues									8,577	9,786	14,029
Europe [Member]
Segment Reporting Information [Line Items]
Revenues									1,843	2,419	2,278
Colombia [Member]
Segment Reporting Information [Line Items]
Revenues									1,837
Other [Member]
Segment Reporting Information [Line Items]
Revenues									$ 1,150	$ 1,302	$ 1,234

Segment Reporting - Net Long-Lived Property and Equipment Assets by Geographic Areas (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Property and equipment, total	$ 177,189	$ 178,069
United States [Member]
Segment Reporting Information [Line Items]
Property and equipment, total	173,009	172,360
Mexico [Member]
Segment Reporting Information [Line Items]
Property and equipment, total	3,674	5,671
Canada [Member]
Segment Reporting Information [Line Items]
Property and equipment, total	500	$ 38
Colombia [Member]
Segment Reporting Information [Line Items]
Property and equipment, total	$ 6

Subsequent Events - Additional Information (Detail) - $ / shares		12 Months Ended
	Feb. 25, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Subsequent Event [Line Items]
Quarterly cash dividend declared per common stock		$ 0.28	$ 0.28	$ 0.14
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends payable, date declared	Feb. 25, 2016
Quarterly cash dividend declared per common stock	$ 0.07
Dividends payable, recorded date	Mar. 07, 2016
Dividends payable, date to be paid	Mar. 17, 2016

Accounts Receivable - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Total unbilled receivables	$ 11.8	$ 11.6
Unbilled receivables billing period	1 month

Segment Reporting - Additional Information (Detail)	12 Months Ended
Segment Reporting - Additional Information (Detail)	Dec. 31, 2015 Segment
Segment Reporting [Abstract]
Number of reportable segments	2