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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2016	Feb. 16, 2017	Jun. 30, 2016
Document Information [Line Items]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	Hub Group, Inc. is filing this Amendment No. 1 to its Annual Report on Form 10-K for the year ended December 31, 2016 (“Form 10-K”) to add a date to the Section 906 certification in Exhibit 32.1.
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	HUBG
Entity Registrant Name	Hub Group, Inc.
Entity Central Index Key	0000940942
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 1,248,870,411
Class A Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		33,471,346
Class B Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		662,296

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 127,404	$ 207,749
Accounts receivable trade, net	473,608	379,987
Accounts receivable other	4,331	10,344
Prepaid taxes	294	362
Deferred taxes		8,412
Prepaid expenses and other current assets	16,653	17,756
TOTAL CURRENT ASSETS	622,290	624,610
Restricted investments	20,877	21,108
Property and equipment, net	438,594	374,847
Other intangibles, net	11,844	13,139
Goodwill, net	262,376	262,594
Other assets	4,278	4,848
TOTAL ASSETS	1,360,259	1,301,146
CURRENT LIABILITIES:
Accounts payable trade	266,555	230,432
Accounts payable other	21,070	21,495
Accrued payroll	36,223	33,020
Accrued other	46,013	38,733
Current portion of capital lease	2,697	2,608
Current portion of long-term debt	45,163	32,409
TOTAL CURRENT LIABILITIES	417,721	358,697
Long-term debt	115,529	100,895
Non-current liabilities	23,595	20,233
Long-term portion of capital lease	10,576	13,299
Deferred taxes	164,659	160,182
STOCKHOLDERS' EQUITY:
Preferred stock, $.01 par value; 2,000,000 shares authorized; no shares issued or outstanding in 2016 and 2015
Additional paid-in capital	173,565	174,285
Purchase price in excess of predecessor basis, net of tax benefit of $10,306	(15,458)	(15,458)
Retained earnings	735,563	660,758
Accumulated other comprehensive loss	(273)	(178)
Treasury stock; at cost, 8,031,810 shares in 2016 and 5,590,831 shares in 2015	(265,637)	(171,986)
TOTAL STOCKHOLDERS' EQUITY	628,179	647,840
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,360,259	1,301,146
Class A Common Stock [Member]
STOCKHOLDERS' EQUITY:
Common stock	412	412
Class B Common Stock [Member]
STOCKHOLDERS' EQUITY:
Common stock	$ 7	$ 7

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Purchase price in excess of predecessor basis, tax benefit	$ 10,306
Treasury stock, shares	8,031,810	5,590,831
Class A Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	97,337,700	97,337,700
Common stock, shares issued	41,224,792	41,224,792
Common stock, shares outstanding	33,192,982	35,633,961
Class B Common Stock [Member]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	662,300	662,300
Common stock, shares issued	662,296	662,296
Common stock, shares outstanding	662,296	662,296

CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Revenue	$ 3,572,790	$ 3,525,595	$ 3,571,126
Transportation costs	3,118,005	3,112,900	3,200,691
Gross margin	454,785	412,695	370,435
Costs and expenses:
Salaries and benefits	180,459	158,938	136,480
Agent fees and commissions	72,896	68,724	62,041
General and administrative	68,630	60,015	58,014
Depreciation and amortization	8,966	7,988	7,799
Driver settlements and related costs			10,343
Impairment of software			11,881
Total costs and expenses	330,951	295,665	286,558
Operating income	123,834	117,030	83,877
Other income (expense):
Interest expense	(3,625)	(2,971)	(1,785)
Interest and dividend income	393	83	32
Other, net	819	(2,560)	(257)
Total other expense	(2,413)	(5,448)	(2,010)
Income before provision for income taxes	121,421	111,582	81,867
Provision for income taxes	46,616	40,633	30,309
Net income	74,805	70,949	51,558
Other comprehensive (loss) income:
Foreign currency translation adjustments	(95)	(101)	8
Total comprehensive income	$ 74,710	$ 70,848	$ 51,566
Basic earnings per common share	$ 2.21	$ 1.98	$ 1.41
Diluted earnings per common share	$ 2.20	$ 1.97	$ 1.40
Basic weighted average number of shares outstanding	33,841	35,876	36,590
Diluted weighted average number of shares outstanding	33,949	35,968	36,732

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands	Total	Class A and B Common Stock [Member]	Additional Paid-in Capital [Member]	Purchase Price Of Excess Of Predecessor Basis, Net Of Tax [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Beginning Balance at Dec. 31, 2013	$ 561,527	$ 419	$ 167,357	$ (15,458)	$ 538,251	$ (85)	$ (128,957)
Beginning Balance (in shares) at Dec. 31, 2013		41,887,088					(4,598,408)
Purchase of treasury shares	(18,024)						$ (18,024)
Purchase of treasury shares (in shares)							(501,271)
Stock tendered for payments of withholding taxes	(3,195)						$ (3,195)
Stock tendered for payments of withholding taxes (in shares)							(80,772)
Issuance of restricted stock awards, net of forfeitures			(5,032)				$ 5,032
Issuance of restricted stock awards, net of forfeitures (in shares)							202,983
Share-based compensation expense	8,258		8,258
Tax benefit of share-based compensation plans	652		652
Net income	51,558				51,558
Foreign currency translation adjustment	8					8
Ending Balance at Dec. 31, 2014	600,784	$ 419	171,235	(15,458)	589,809	(77)	$ (145,144)
Ending Balance (in shares) at Dec. 31, 2014		41,887,088					(4,977,468)
Purchase of treasury shares	(28,823)						$ (28,823)
Purchase of treasury shares (in shares)							(735,524)
Stock tendered for payments of withholding taxes	(2,916)						$ (2,916)
Stock tendered for payments of withholding taxes (in shares)							(77,732)
Issuance of restricted stock awards, net of forfeitures			(4,897)				$ 4,897
Issuance of restricted stock awards, net of forfeitures (in shares)							199,893
Share-based compensation expense	7,833		7,833
Tax benefit of share-based compensation plans	114		114
Net income	70,949				70,949
Foreign currency translation adjustment	(101)					(101)
Ending Balance at Dec. 31, 2015	647,840	$ 419	174,285	(15,458)	660,758	(178)	$ (171,986)
Ending Balance (in shares) at Dec. 31, 2015		41,887,088					(5,590,831)
Purchase of treasury shares	$ (100,000)						$ (100,000)
Purchase of treasury shares (in shares)	(2,672,227)						(2,672,227)
Stock tendered for payments of withholding taxes	$ (2,489)						$ (2,489)
Stock tendered for payments of withholding taxes (in shares)							(73,546)
Issuance of restricted stock awards, net of forfeitures			(8,838)				$ 8,838
Issuance of restricted stock awards, net of forfeitures (in shares)							304,794
Share-based compensation expense	8,479		8,479
Tax benefit of share-based compensation plans	(361)		(361)
Net income	74,805				74,805
Foreign currency translation adjustment	(95)					(95)
Ending Balance at Dec. 31, 2016	$ 628,179	$ 419	$ 173,565	$ (15,458)	$ 735,563	$ (273)	$ (265,637)
Ending Balance (in shares) at Dec. 31, 2016		41,887,088					(8,031,810)

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 74,805	$ 70,949	$ 51,558
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	44,712	37,042	29,380
Impairment of software			11,881
Deferred taxes	13,801	16,378	24,501
Compensation expense related to share-based compensation plans	8,479	7,833	8,258
Gain on sale of assets	(573)	(129)	(46)
Excess tax benefits from share based compensation	(733)	(81)
Changes in operating assets and liabilities:
Restricted investments	231	836	(1,190)
Accounts receivable, net	(87,629)	36,373	(28,621)
Prepaid taxes	66	14,575	(14,533)
Prepaid expenses and other current assets	1,099	(3,401)	(1,621)
Other assets	570	(805)	(2,047)
Accounts payable	35,709	(25,736)	20,370
Accrued expenses	9,238	20,505	367
Non-current liabilities	2,698	(2,642)	284
Net cash provided by operating activities	102,473	171,697	98,541
Cash flows from investing activities:
Proceeds from sale of equipment	2,061	2,309	612
Purchases of property and equipment	(107,409)	(83,042)	(119,171)
Net cash used in investing activities	(105,348)	(80,733)	(118,559)
Cash flows from financing activities:
Proceeds from issuance of debt	62,155	64,442	91,084
Repayments of long-term debt	(34,767)	(23,217)	(7,251)
Stock tendered for payments of withholding taxes	(2,489)	(2,916)	(3,195)
Purchase of treasury stock	(100,000)	(28,823)	(18,024)
Capital lease payments	(2,634)	(2,534)	(2,449)
Excess tax benefits from share-based compensation	372	195	652
Net cash (used in) provided by financing activities	(77,363)	7,147	60,817
Effect of exchange rate changes on cash and cash equivalents	(107)	(131)	6
Net (decrease) increase in cash and cash equivalents	(80,345)	97,980	40,805
Cash and cash equivalents beginning of the year	207,749	109,769	68,964
Cash and cash equivalents end of the year	127,404	207,749	109,769
Supplemental disclosures of cash paid for:
Interest	3,665	2,977	1,532
Income taxes	$ 33,233	$ 6,990	$ 20,189

Description of Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	NOTE 1. Description of Business and Summary of Significant Accounting Policies Business: Hub Group, Inc. (“we”, “us” or “our”) provides intermodal transportation services utilizing primarily third party arrangements with railroads. Drayage can be provided by our subsidiary, Hub Group Trucking, Inc., or a third party company. We also arrange for transportation of freight by truck and perform logistics services. Transportation services are provided through our legacy business and our acquisition, Mode Transportation, LLC. We report two distinct business segments. The first segment is Mode, which includes the Mode business we acquired on April 1, 2011. The other segment is Hub, which is all business other than Mode. “Hub Group” includes both segments. Principles of Consolidation: The consolidated financial statements include our accounts and all entities in which we have more than a 50% equity ownership or otherwise exercise unilateral control. All significant intercompany balances and transactions have been eliminated. Cash and Cash Equivalents: We consider as cash equivalents all highly liquid instruments with an original maturity of three months or less. As of December 31, 2016 and 2015, our cash and temporary investments were with high quality financial institutions in DDAs (Demand Deposit Accounts) and Savings Accounts. Accounts Receivable and Allowance for Uncollectible Accounts: In the normal course of business, we extend credit to customers after a review of each customer’s credit history. An allowance for uncollectible trade accounts has been established through an analysis of the accounts receivable aging, an assessment of collectability based on historical trends and an evaluation based on current economic conditions. To be more specific, we reserve a portion of every account balance that has aged over one year, a portion of receivables for customers in bankruptcy and certain account balances specifically identified as uncollectible. On an annual basis, we perform a hindsight analysis on Hub and Mode separately to determine each segment’s experience in collecting account balances over one year old and account balances in bankruptcy. We then use this hindsight analysis to establish our reserves for receivables over one year and in bankruptcy. In establishing a reserve for certain account balances specifically identified as uncollectible, we consider the aging of the customer receivables, the specific details as to why the receivable has not been paid, the customer’s current and projected financial results, the customer’s ability to meet and sustain their financial commitments, the positive or negative effects of the current and projected industry outlook and the general economic conditions. The allowance for uncollectible accounts is reported on the balance sheet in net accounts receivable. Our reserve for uncollectible accounts was approximately $5.4 million and $5.2 million as of December 31, 2016 and 2015, respectively. Receivables are written off once collection efforts have been exhausted. Recoveries of receivables previously charged off are recorded when received. Property and Equipment: Property and equipment are stated at cost. Depreciation of property and equipment is computed using the straight-line method at rates adequate to depreciate the cost of the applicable assets over their expected useful lives: building and improvements, up to 40 years; leasehold improvements, the shorter of useful life or lease term; computer equipment and software, up to 10 years; furniture and equipment, up to 10 years; and transportation equipment up to 15 years. Direct costs related to internally developed software projects are capitalized and amortized over their expected useful life on a straight-line basis not to exceed 10 years. Interest is capitalized on qualifying assets under development for internal use. Maintenance and repairs are charged to operations as incurred and major improvements are capitalized. The cost of assets retired or otherwise disposed of and the accumulated depreciation thereon are removed from the accounts with any gain or loss realized upon sale or disposal charged or credited to operations. We review long-lived assets for impairment when events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. In the event that the undiscounted future cash flows resulting from the use of the asset group is less than the carrying amount, an impairment loss equal to the excess of the assets carrying amount over its fair value, less cost to dispose, is recorded. Goodwill and Other Intangibles: Goodwill represents the excess of purchase price over the fair market value of net assets acquired in connection with our business combinations. Goodwill and intangible assets that have indefinite useful lives are not amortized but are subject to annual impairment tests. We test goodwill for impairment annually in the fourth quarter or when events or changes in circumstances indicate the carrying value of this asset might exceed the current fair value. We test goodwill for impairment at the reporting unit level. We assess qualitative factors such as current company performance and overall economic factors to determine if it is more-likely-than-not that the goodwill might be impaired and whether it is necessary to perform the quantitative goodwill 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. In 2016 and 2015, we performed the qualitative assessment on both the Hub and Mode reporting units and determined it was not, more-likely-than-not, that goodwill might be impaired. We evaluate the potential impairment of finite-lived acquired intangible assets when impairment indicators exist. If the carrying value is no longer recoverable based upon the undiscounted future cash flows of the asset, the amount of the impairment is the difference between the carrying amount and the fair value of the asset. Concentration of Credit Risk: Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We place our cash and temporary investments with high quality financial institutions in DDAs (Demand Deposit Accounts) and Savings Accounts. We primarily serve customers located throughout the United States with no significant concentration in any one region. No one customer accounted for more than 10% of revenue in 2016, 2015 or 2014. We review a customer’s credit history before extending credit. In addition, we routinely assess the financial strength of our customers and, as a consequence, believe that our trade accounts receivable risk is limited. Revenue Recognition: Revenue is recognized at the time 1) persuasive evidence of an arrangement exists, 2) services have been rendered, 3) the sales price is fixed and determinable and 4) collectability is reasonably assured. Revenue and related transportation costs are recognized based on relative transit time. Further, in most cases, we report our revenue on a gross basis because we are the primary obligor as we are responsible for providing the service desired by the customer. Our customers view us as responsible for fulfillment including the acceptability of the service. Services requirements may include, for example, on-time delivery, handling freight loss and damage claims, setting up appointments for pick-up and delivery and tracing shipments in transit. We have discretion in setting sales prices and as a result, the amount we earn varies. In addition, we have the discretion to select our vendors from multiple suppliers for the services ordered by our customers. Finally, we have credit risk for our receivables. These three factors, discretion in setting prices, discretion in selecting vendors and credit risk, further support reporting revenue on a gross basis for most of our revenue. Provision for Income Taxes: Deferred income taxes are recognized for the future tax effects of temporary differences between financial and income tax reporting using tax rates in effect for the years in which the differences are expected to reverse. We believe that it is more likely than not that our deferred tax assets will be realized based on future taxable income projections with two exceptions for which we have established valuation allowances. We have established valuation allowances of $0.1 million related to state tax net operating losses and $0.4 million related to state incentive tax credit carryforwards. In the event the probability of realizing the remaining deferred tax assets do not meet the more likely than not threshold in the future, a valuation allowance would be established for the deferred tax assets deemed unrecoverable. Tax liabilities are recorded when, in management’s judgment, a tax position does not meet the more likely than not threshold for recognition as prescribed by the guidance. For tax positions that meet the more likely than not threshold, a tax liability may be recorded depending on management’s assessment of how the tax position will ultimately be settled. We recognize interest expense and penalties related to income tax liabilities in our provision for income taxes. Earnings Per Common Share: Basic earnings per common share are based on the average quarterly weighted average number of Class A and Class B shares of common stock outstanding. Diluted earnings per common share are adjusted for the assumed exercise of dilutive stock options and for restricted stock which are both computed using the treasury stock method. Stock Based Compensation: Share-based compensation includes the restricted stock awards expected to vest based on the grant date fair value. Compensation expense is amortized straight-line over the vesting period including an estimate of forfeitures and is included in salaries and benefits. We present excess tax benefits resulting from the exercise of share-based compensation as financing cash in-flows and as operating cash out-flows in the Consolidated Statements of Cash Flows. New Pronouncements: In May 2014, the FASB issued Update No. 2014-09—Revenue from Contracts with Customers (Topic 606). This Standard provides guidance on how to recognize 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 addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The FASB has recently issued several amendments to the standard, including clarification on accounting for principal vs agent and identifying performance obligations. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We currently anticipate adopting the standard using the full retrospective method to restate each prior reporting period presented. Early application is permitted for annual reporting periods beginning after December 15, 2016. We plan to adopt this standard January 1, 2018, as required. While we are continuing to assess all potential impacts of the standard, other than additional disclosures, we do not anticipate that this standard will have a material impact on our consolidated financial statements. We have analyzed our revenue stream, began analysis of our current contracts and will continue to analyze these contracts. In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). ASU 2014-15 explicitly requires management to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosure in certain circumstances. The new standard is effective for all entities in the first annual period ending after December 15, 2016. We adopted this standard for the year ended December 31, 2016 and it did not have an impact on our financial condition, results of operations and cash flows. In November 2015, the FASB issued Update No. 2015-17—Income Taxes (Topic 740). This Standard provides guidance on the balance sheet classification of deferred taxes, amending the accounting for income taxes and requiring all deferred tax assets and liabilities to be classified as non-current on the consolidated balance sheet. For public organizations, the guidance in the update is effective for annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Early application is permitted. We elected to early adopt this standard as of March 31, 2016 to simplify the presentation of our deferred income taxes and applied the guidance prospectively. As a result, we have presented all deferred tax assets and liabilities as non-current on our consolidated balance sheet as of December 31, 2016, but have not reclassified deferred tax assets and liabilities as noncurrent on our consolidated balance sheet as of December 31, 2015. In February 2016, the FASB issued ASU No. 2016-02, Leases, which requires lessees to recognize a right-to-use asset and a lease obligation for all leases. Lessees are permitted to make an accounting policy election to not recognize an asset and liability for leases with a term of twelve months or less. The new standard will become effective beginning with the first quarter of 2019. Early adoption of the standard is permitted. We plan to adopt this standard January 1, 2019, as required. We are currently evaluating the impacts the adoption of this accounting guidance will have on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification of related amounts within the statement of cash flows. The new standard will become effective beginning with the first quarter of 2017, with early adoption permitted. We will adopt ASU 2016-09 in the first quarter of 2017 and do not expect the adoption to have a material impact on our consolidated financial statements. In 2016, the FASB issued new guidance that requires credit losses on financial assets measured at amortized cost basis to be presented at the net amount expected to be collected, not based on incurred losses. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018 is permitted. We are evaluating the impact of adopting this new accounting guidance on our consolidated financial statements. In 2016, the FASB issued new guidance which clarifies the classification of certain cash receipts and cash payments in the statement of cash flows, including debt prepayment or extinguishment costs, settlement of contingent consideration arising from a business combination, insurance settlement proceeds, and distributions from certain equity method investees. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. We are evaluating the impact of adopting this new accounting guidance on our consolidated financial statements. Use of Estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Significant estimates include the allowance for doubtful accounts, exposure under our insurance and claims policies and useful lives of equipment. Actual results could differ from those estimates.

Capital Structure	12 Months Ended
Capital Structure	Dec. 31, 2016
Equity [Abstract]
Capital Structure	NOTE 2. Capital Structure We have authorized common stock comprised of Class A Common Stock and Class B Common Stock. The rights of holders of Class A Common Stock and Class B Common Stock are identical, except each share of Class B Common Stock entitles its holder to 84 votes, while each share of Class A Common Stock entitles its holder to one vote. We have authorized 2,000,000 shares of preferred stock.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section 50
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Publisher FASB
-Name Accounting Standards Codification
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-Subparagraph (SX 210.3-04)
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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Earnings Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Earnings Per Share

NOTE 3. Earnings Per Share

The following is a reconciliation of our earnings per share (in thousands, except for per share data):

	Years Ended, December 31,
	2016		2015		2014

Net income for basic and diluted earnings per share	$	74,805	$	70,949	$	51,558

Weighted average shares outstanding - basic		33,841		35,876		36,590

Dilutive effect of stock options and restricted stock		108		92		142

Weighted average shares outstanding - diluted		33,949		35,968		36,732

Earnings per share - basic	$	2.21	$	1.98	$	1.41

Earnings per share - diluted	$	2.20	$	1.97	$	1.40

Impairment of Software	12 Months Ended
Impairment of Software	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Impairment of Software	NOTE 4. Impairment of Software In 2014, the Hub segment recorded a full write-off of $11.9 million related to software development costs as a result of our decision to terminate a long-term technology project. Upon deployment in the third quarter of 2014, it was discovered that the software did not properly integrate with our current systems or meet the criteria for which it was designed. We did not believe the software could be cost effectively salvaged and it has no value on the open market. This charge is included in Impairment of software in the Consolidated Statements of Income and Comprehensive Income.

Business Segments

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Business Segments

NOTE 5. Business Segments

We report two distinct business segments. The first segment is Mode, which includes the Mode LLC business we acquired on April 1, 2011. The second segment is Hub, which is all business other than Mode.

Hub offers comprehensive intermodal, truck brokerage and logistics services. Our employees operate the freight through a network of operating centers located in the United States, Canada and Mexico. Each operating center is strategically located in a market with a significant concentration of shipping customers and one or more railheads. Hub has full time employees located throughout the United States, Canada and Mexico.

Mode LLC markets and operates its freight transportation services, consisting of intermodal, truck brokerage and logistics, primarily through agents who enter into contractual arrangements with Mode LLC.

The following is a summary of operating results, which includes the results of operations of the Mode segment for the years ended December 31, 2016, 2015 and 2014, and certain other financial data for our business segments (in thousands):

	Twelve Months									Twelve Months
	Ended December 31, 2016									Ended December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Revenue	$	2,734,541	$	948,735	$	(110,486	)	$	3,572,790	$	2,679,318	$	928,661	$	(82,384	)	$	3,525,595
Transportation costs		2,404,946		823,545		(110,486	)		3,118,005		2,385,197		810,087		(82,384	)		3,112,900
Gross margin		329,595		125,190		-			454,785		294,121		118,574		-			412,695

Costs and expenses:
Salaries and benefits		165,136		15,323		-			180,459		143,993		14,945		-			158,938
Agent fees and commissions		66		72,830		-			72,896		56		68,668		-			68,724
General and administrative		60,811		7,819		-			68,630		53,023		6,992		-			60,015
Depreciation and amortization		7,698		1,268		-			8,966		6,688		1,300		-			7,988
Total costs and expenses		233,711		97,240		-			330,951		203,760		91,905		-			295,665

Operating income	$	95,884	$	27,950	$	-		$	123,834		90,361		26,669		-			117,030

Capital expenditures	$	106,316	$	1,093	$	-		$	107,409	$	79,860	$	3,182	$	-		$	83,042

	Twelve Months
	Ended December 31, 2014
					Inter-			Hub
					Segment			Group
	Hub		Mode		Elims			Total
Revenue	$	2,722,799	$	931,131	$	(82,804	)	$	3,571,126
Transportation costs		2,461,144		822,351		(82,804	)		3,200,691
Gross margin		261,655		108,780		-			370,435

Costs and expenses:
Salaries and benefits		122,097		14,383		-			136,480
Agent fees and commissions		45		61,996		-			62,041
General and administrative		51,108		6,906		-			58,014
Depreciation and amortization		6,238		1,561		-			7,799
Driver settelments and related costs		10,343		-		-			10,343
Impairment of software		11,881		-		-			11,881
Total costs and expenses		201,712		84,846		-			286,558

Operating income	$	59,943	$	23,934	$	-		$	83,877

Capital expenditures	$	118,640	$	531	$	-		$	119,171

	As of December 31, 2016									As of December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Total assets	$	1,178,110	$	191,374	$	(9,225	)	$	1,360,259	$	1,127,042	$	181,514	$	(7,410	)	$	1,301,146
Goodwill		232,987		29,389		-			262,376		233,205		29,389		-			262,594

The following tables summarize our revenue by segment and business line (in thousands):

	Twelve Months									Twelve Months
	Ended December 31, 2016									Ended December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Intermodal	$	1,785,865	$	486,758	$	(81,556	)	$	2,191,067	$	1,792,046	$	483,910	$	(78,688	)	$	2,197,268
Truck brokerage		391,901		308,055		(1,456	)		698,500		355,402		314,498		(1,908	)		667,992
Logistics		556,775		153,922		(27,474	)		683,223		531,870		130,253		(1,788	)		660,335
Total revenue	$	2,734,541	$	948,735	$	(110,486	)	$	3,572,790	$	2,679,318	$	928,661	$	(82,384	)	$	3,525,595

	Twelve Months
	Ended December 31, 2014
					Inter-			Hub
					Segment			Group
	Hub		Mode		Elims			Total
Intermodal	$	1,815,842	$	466,859	$	(79,406	)	$	2,203,295
Truck brokerage		338,590		335,587		(946	)		673,231
Logistics		568,367		128,685		(2,452	)		694,600
Total revenue	$	2,722,799	$	931,131	$	(82,804	)	$	3,571,126

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

NOTE 6. Goodwill and Other Intangible Assets

In accordance with the FASB issued guidance in the Intangibles-Goodwill and Other Topic of the Codification, we completed the required annual impairment tests. We performed a qualitative assessment on both the Hub segment goodwill and the Mode segment goodwill and determined it was not, more-likely-than-not, that goodwill might be impaired. There were no accumulated impairment losses of goodwill at the beginning of the period.

The following table presents the carrying amount of goodwill (in thousands):

						Hub Group
	Hub			Mode		Total
Balance at January 1, 2015	$	233,424		$	29,389	$	262,813
Other		(219	)	-			(219	)
Balance at December 31, 2015		233,205			29,389		262,594
Other		(218	)	-			(218	)
Balance at December 31, 2016	$	232,987		$	29,389	$	262,376

The changes noted as “other” in the table above for both 2016 and 2015 refer to the amortization of the income tax benefit of tax goodwill in excess of financial statement goodwill.

The components of the “Other intangible assets” are as follows (in thousands):

						Net
	Gross		Accumulated			Carrying
As of December 31, 2016:	Amount		Amortization			Value		Life

Hub
Customer relationships	$	5,181	$	(3,792	)	$	1,389	7-15 years

Mode
Agency/customer relationships	$	15,362	$	(4,907	)	$	10,455	18 years


Hub Group Total	$	20,543	$	(8,699	)	$	11,844

						Net
	Gross		Accumulated			Carrying
As of December 31, 2015:	Amount		Amortization			Value		Life

Hub
Customer relationships	$	5,181	$	(3,350	)	$	1,831	7-15 years

Mode
Agency/customer relationships	$	15,362	$	(4,054	)	$	11,308	18 years

Hub Group Total	$	20,543	$	(7,404	)	$	13,139

The above intangible assets are amortized using the straight-line method. Amortization expense for each of the years ended December 31, 2016, 2015 and 2014 was $1.3 million. The remaining weighted average life of all definite lived intangible assets as of December 31, 2016 was 3.60 years and 12.25 years for Hub and Mode, respectively. Amortization expense for the next five years is as follows (in thousands):

					Hub Group
	Hub		Mode		Total
2017	$	442	$	853	$	1,295
2018		395		853		1,248
2019		255		853		1,108
2020		255		853		1,108
2021		42		853		895

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

NOTE 7. Income Taxes

The following is a reconciliation of our effective tax rate to the federal statutory tax rate:

	Years Ended December 31,
	2016				2015			2014
U.S. federal statutory rate		35.0		%		35.0	%		35.0		%
State taxes, net of federal benefit		2.6			2.4			2.9
State incentives		(0.2	)		(0.5)				(0.8	)
State law changes		0.3			(0.9)				(0.9	)
Nondeductible expenses		0.7			0.4				0.9
Other		-			-				(0.1	)
Net effective rate		38.4		%		36.4	%		37.0		%

The following is a summary of our provision for income taxes (in thousands):

	Years Ended December 31,
	2016			2015			2014
Current
Federal	$	30,324		$	21,363		$	5,939
State and local		3,296			2,900			445
Foreign		108			284			249
		33,728			24,547			6,633

Deferred
Federal		11,981			16,538			23,600
State and local		971			(346	)		191
Foreign		(64	)		(106	)		(115	)
		12,888			16,086			23,676

Total provision	$	46,616		$	40,633		$	30,309

In November 2015, the FASB issued Update No. 2015-17—Income Taxes (Topic 740). This Standard provides guidance on the balance sheet classification of deferred taxes, amending the accounting for income taxes and requiring all deferred tax assets and liabilities to be classified as non-current on the consolidated balance sheet. We elected to early adopt this standard as of March 31, 2016 to simplify the presentation of our deferred income taxes and applied the guidance prospectively. As a result, we have presented all deferred tax assets and liabilities as non-current on our consolidated balance sheet as of December 31, 2016, but have not reclassified deferred tax assets and liabilities as noncurrent on our consolidated balance sheet as of December 31, 2015. In the following summary of our deferred tax assets and liabilities (in thousands), however, we are presenting all the deferred tax asset and liability balances as of both December 31, 2016 and December 31, 2015 as noncurrent for better year over year comparability:

	December 31,
	2016			2015
Accrued compensation		20,651			18,448
Other reserves		8,580			4,319
Tax credit carryforwards		1,694			1,257
Operating loss carryforwards		1,399			1,914
Total gross deferred income taxes		32,324			25,938
Valuation allowances		(456	)		(108	)
Total deferred tax assets		31,868			25,830

Prepaids		(3,401	)		(3,448	)
Other receivables		(3,051	)		(4,493	)
Property and equipment		(105,905	)		(87,148	)
Goodwill		(84,170	)		(82,511	)
Total deferred tax liabilities		(196,527	)		(177,600	)

Total deferred taxes	$	(164,659	)	$	(151,770	)

We are subject to income taxation in the U.S., numerous state jurisdictions, Mexico and Canada. Because income tax return formats vary among the states, we file both unitary and separate company state income tax returns. Our state tax net operating losses of $1.4 million expire between December 31, 2017 and December 31, 2035. Our state incentive tax credit carryforwards of $1.7 million expire between December 31, 2018 and December 31, 2021. Management believes it is more likely than not that these deferred tax assets will be realized with the exception of $0.1 million related to state tax net operating losses, and $0.3 million related to state tax incentive credit carryforwards. Valuation allowances totaling $0.5 million have been established for each of these amounts.

As of December 31, 2016 and December 31, 2015, the amount of unrecognized tax benefits was $1.8 million and $1.1 million, respectively. Of these amounts, our income tax provision would decrease $1.2 million and $0.7 million, respectively, if recognized. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	2016			2015
Gross unrecognized tax benefits - beginning of the year	$	1,139		$	1,065
Gross increases related to prior year tax positions		394			166
Gross increases related to current year tax positions		488			153
Lapse of applicable statute of limitations		(189	)		(245	)
Gross unrecognized tax benefits - end of year	$	1,832		$	1,139

We estimate it is reasonably possible that our reserve could either increase or decrease by up to $0.5 million during the next twelve months.

We recognize interest expense and penalties related to income tax liabilities in our provision for income taxes. In our 2016 provision for income taxes we recognized approximately fifteen thousand dollars of expense for combined income tax interest and income tax penalty.

In 2016, we were selected for examinations by the IRS for our 2014 tax year, by California for our 2012 and 2013 tax years, by New York for our 2012 through 2014 tax years, and by Ohio for our 2014 and 2015 tax years. The IRS and California examinations are ongoing. The New York audit was settled for approximately sixteen thousand dollars while the Ohio audit closed with no changes. In addition to the audits that are ongoing, tax years 2012 through 2015 generally remain open to examination by the major jurisdictions to which we are subject.

Fair Value Measurement	12 Months Ended
Fair Value Measurement	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurement	NOTE 8. Fair Value Measurement The carrying value of cash and cash equivalents, accounts receivable, accounts payable and long-term debt materially approximated fair value as of December 31, 2016 and 2015 due to their short-term nature. We consider as cash equivalents all highly liquid instruments with an original maturity of three months or less. As of December 31, 2016 and 2015, our cash and temporary investments were with high quality financial institutions in (DDAs) Demand Deposit Accounts and Savings Accounts. Restricted investments included $20.9 million and $21.1 million as of December 31, 2016 and 2015, respectively, of mutual funds which are reported at fair value. Our assets and liabilities measured at fair value are based on valuation techniques which consider prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. These valuation methods are based on either quoted market prices (Level 1) or inputs, other than quoted prices in active markets, that are observable either directly or indirectly (Level 2). Cash and cash equivalents, accounts receivable and accounts payable are defined as “Level 1,” while long-term debt is defined as “Level 2” of the fair value hierarchy in the Fair Value Measurements and Disclosures Topic of the Codification.

- 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

Property and Equipment

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property and Equipment

NOTE 9. Property and Equipment

Property and equipment consist of the following (in thousands):

	December 31,
	2016			2015
Land	$	24,708		$	9,855
Building and improvements		36,269			35,267
Leasehold improvements		5,016			4,419
Computer equipment and software		91,302			77,887
Furniture and equipment		13,852			13,260
Transportation equipment		472,634			405,322
Construction in process		450			-
		644,231			546,010
Less: Accumulated depreciation and amortization		(205,637	)		(171,163	)
Property and Equipment, net	$	438,594		$	374,847

The increase in transportation equipment to $472.6 million in 2016 from $405.3 million in 2015 was due primarily to the purchase of containers.

The increase in computer software and hardware to $91.3 million in 2016 from $77.9 million in 2015 was related to our transportation management and human resource systems.

Included in the transportation equipment is a capital lease obligation entered into for $26.4 million in 2011. The balances as of December 31, 2016 and 2015, net of accumulated amortization, were $12.3 million and $14.7 million, respectively.

Depreciation and amortization expense related to property and equipment was $43.4 million, $35.9 million and $28.3 million for 2016, 2015 and 2014, respectively, which includes amortization expense associated with a capital lease of $2.3 million for 2016 and $2.6 million for both 2015 and 2014. This amortization expense is included in transportation costs. Transportation equipment depreciation is included in transportation costs.

Long-Term Debt and Financing Arrangements

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Long-Term Debt and Financing Arrangements

NOTE 10. Long-Term Debt and Financing Arrangements

In December 2013, we amended our Credit Agreement to reduce the interest rate and commitment fees and extend the term until December 2018. The maximum unsecured borrowing capacity remained at $50.0 million. The interest rate under the Credit Agreement ranges from LIBOR plus 1.00% to 1.75% or Prime to Prime plus 0.75%. The commitment fees charged on the unused line of credit are between 0.10% and 0.25% per annum. The financial covenants require a total leverage ratio of not more than 3.0 to 1.0 and an interest coverage ratio of not less than 2.0 to 1.0.

We have standby letters of credit that expire in 2017. As of December 31, 2016, our letters of credit were $11.8 million.

Our unused and available borrowings under our bank revolving line of credit were $38.2 million as of December 31, 2016 and $41.8 million as of December 31, 2015. We were in compliance with our debt covenants as of December 31, 2016.

We have entered into various Equipment Notes (“Notes”) for the purchase of tractors and containers. The Notes are secured by the underlying equipment financed in the agreements.

Our outstanding debt is as follows (in thousands):

	Period Ended
	December 31,			December 31,
	2016			2015
Secured Equipment Notes due on various dates in 2021 with monthly principal and interest payments between $0.01 million and $0.3 million commencing on various dates in 2016 and 2017; interest is paid monthly at a fixed annual rate between 2.04% and 2.96%	$	59,836		$	-

Secured Equipment Notes due on various dates in 2020 with monthly principal and interest payments between $0.04 million and $0.4 million commencing on various dates in 2015 and 2016; interest is paid monthly at a fixed annual rate between 1.72% and 2.26%		48,633			61,206

Secured Equipment Notes due on various dates in 2019 with monthly principal and interest payments between $0.08 million and $0.4 million commencing on various dates in 2014; interest is paid monthly at a fixed annual rate between 1.87% and 2.24%		49,464			67,486

Secured Equipment Notes due in June 2018 with quarterly principal and interest payments of $0.5 million commencing in August 2013; interest is paid quarterly at a fixed annual rate between 1.9% and 2.0%		2,759			4,612
		160,692			133,304

Less current portion		(45,163	)		(32,409	)
Total long-term debt	$	115,529		$	100,895

Aggregate principal payments, in thousands, due subsequent to December 31, 2016, are as follows:

2017	$	45,163
2018		44,466
2019		38,187
2020		22,677
2021		10,199
	$	160,692

In 2011, we entered into a lease agreement for 3,126 chassis for a period of 10 years. We are accounting for this lease as a capital lease. Interest on this capital lease obligation is based on interest rates that approximate currently available interest rates; therefore, indebtedness under this capital lease obligation approximates fair value.

We paid interest of $0.6 million, $0.7 million and $0.8 million in 2016, 2015 and 2014, respectively, related to this capital lease.

Leases, User Charges and Commitments

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Leases, User Charges and Commitments

NOTE 11. Leases, User Charges and Commitments

Minimum annual capital and operating lease payments, as of December 31, 2016, under non-cancelable leases, principally for containers, chassis, other equipment and real estate, as well as other commitments are payable as follows (in thousands):

Future Payments Due:

				Operating
				Leases and
	Capital			Other
	Lease			Commitments		Total
2017	$	3,167		$	8,998	$	12,165
2018		3,167			7,311		10,478
2019		3,167			5,502		8,669
2020		3,176			5,274		8,450
2021		1,840			5,402		7,242
2022 and thereafter		-			7,489		7,489
	$	14,517		$	39,976	$	54,493
Less: Imputed interest		(1,244	)
Net capital lease liability	$	13,273

Total rental expense included in general and administrative expense, which relates primarily to real estate, was approximately $8.3 million in 2016, $8.0 million in 2015 and $8.1 million in 2014. Many of the real estate leases contain renewal options and escalation clauses which require payments of additional rent to the extent of increases in the related operating costs. We straight-line rental expense in accordance with the FASB guidance in the Leases Topic of the Codification.

We incur rental expense for our leased containers, tractors and trailers that are included in transportation costs and totaled $3.6 million, $11.9 million, and $13.1 million for 2016, 2015 and 2014, respectively.

We incur user charges for use of a fleet of rail owned chassis, chassis under capital lease and dedicated rail owned containers on the Union Pacific and Norfolk Southern railroads which are included in transportation costs. Such charges were $73.7 million, $74.3 million and $67.8 million for 2016, 2015 and 2014, respectively. We have the ability to return the majority of the containers and pay for the rail owned chassis only when we are using them under these agreements. As a result, no minimum commitments related to these rail owned chassis and containers have been included in the table above.

In addition to the commitments above, in November 2016, we committed to acquire 4,000 53’ containers. We expect the total purchase price of these containers to be approximately $40 million. We expect to take delivery of the equipment between February and November of 2017. We are evaluating whether we finance the containers with a lease or debt.

Guarantees	12 Months Ended
Guarantees	Dec. 31, 2016
Guarantees [Abstract]
Guarantees	NOTE 12. Guarantees As a recruiting tool for our owner-operators, we are guaranteeing certain owner-operators’ lease payments for tractors. The guarantees expire at various dates through 2020. The potential maximum exposure under these lease guarantees was approximately $1.4 million and $10.3 million as of December 31, 2016 and 2015, respectively. The potential maximum exposure represents the amount of the remaining lease payments on all outstanding guaranteed leases as of December 31, 2016 and 2015. However, upon default, we have the option to purchase the tractors. We could then sell the tractors and use the proceeds to recover all or a portion of the amounts paid under the guarantees. Alternatively, we can contract with another owner operator who would assume the lease or continue to operate the leased tractor in our company fleet. There were no material defaults during the years ended December 31, 2016 and 2015 and no potential material defaults. We had a liability of approximately nine thousand dollars at December 31, 2016 and $0.1 million as of December 31, 2015, representing the fair value for estimated defaults of the guarantees, based on a discounted cash-flow analysis which is included in current and non-current liabilities in our Consolidated Balance Sheets. We are amortizing the amounts over the remaining lives of the respective guarantees.

Stock-Based Compensation Plans

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Plans

NOTE 13. Stock-Based Compensation Plans

In 1996, we adopted a Long-Term Incentive Plan (the “1996 Incentive Plan”). The number of shares of Class A Common Stock reserved for issuance under the 1996 Incentive Plan was 1,800,000. In 1997, we adopted a second Long-Term Incentive Plan (the “1997 Incentive Plan”). The number of shares of Class A Common Stock reserved for issuance under the 1997 Incentive Plan was 600,000. In 1999 we adopted a third Long-Term Incentive Plan (the “1999 Incentive Plan”). The number of shares of Class A Common Stock reserved for issuance under the 1999 Incentive Plan was 2,400,000. In 2002, we adopted a fourth Long-Term Incentive Plan (the “2002 Incentive Plan”). The number of shares of Class A Common Stock reserved for issuance under the 2002 Incentive Plan was 2,400,000. In 2003, we amended our 2002 Incentive Plan to add an additional 2,000,000 shares of Class A Common Stock that are reserved for issuance. In 2007, we amended our 2002 Incentive Plan to add an additional 1,000,000 shares of Class A Common Stock that are reserved for issuance. Under the 2002 Incentive Plan, stock options, stock appreciation rights, restricted stock, restricted stock units and performance units may be granted for the purpose of attracting and motivating our key employees and non-employee directors. We have not granted any stock options since 2003 and have no stock options outstanding. Restricted stock vests over a three to five year period. As of December 31, 2016, 995,093 shares were available for future grant.

Share-based compensation expense for 2016, 2015 and 2014 was $8.5 million, $7.8 million and $8.3 million or $5.2 million, $5.0 million and $5.2 million, net of taxes, respectively.

Intrinsic value for stock options is defined as the difference between the current market value and the grant price. There were no options exercised during the year ended December 31, 2016, 2015 and 2014.

The following table summarizes the non-vested restricted stock activity for the year ended December 31, 2016:

			Weighted
			Average
			Grant Date
Non-vested restricted stock	Shares		Fair Value

Non-vested January 1, 2016		696,097	$	37.02
Granted		420,368	$	33.46
Vested		(219,951)	$	36.34
Forfeited		(115,574)	$	35.75
Non-vested at December 31, 2016		780,940	$	35.48

The following table summarizes the restricted stock granted during the respective years:

Restricted stock grants	2016		2015		2014

Employees		394,243		316,531		273,910
Outside directors		26,125		22,000		20,000
Total		420,368		338,531		293,910

Weighted average grant date fair value	$	33.46	$	37.60	$	39.66

Vesting period	3-5 years		3-5 years		3-5 years

The fair value of non-vested restricted stock is equal to the market price of our stock at the date of grant.

The total fair value of restricted shares vested during the years ended December 31, 2016, 2015 and 2014 was $7.5 million, $8.7 million and $9.4 million, respectively.

As of December 31, 2016, there was $20.8 million of unrecognized compensation cost related to non-vested share-based compensation that is expected to be recognized over a weighted average period of 2.98 years.

During January 2017, we granted 324,797 shares of restricted stock to certain employees and 27,500 shares of restricted stock to outside directors with a weighted average grant date fair value of $43.75. The stock vests over a three to five year period.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Employee Benefit Plans	12 Months Ended
Employee Benefit Plans	Dec. 31, 2016
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 14. Employee Benefit Plans We have one profit-sharing plan as of December 31, 2016, 2015 and 2014, under section 401(k) of the Internal Revenue Code. At our discretion, we partially match qualified contributions made by employees to the plan. We incurred expense of $2.4 million related to this plan in 2016 and $1.9 million of expense in both 2015 and 2014. In January 2005, we established the Hub Group, Inc. Nonqualified Deferred Compensation Plan (the “Plan”) to provide added incentive for the retention of certain key employees. Under the Plan, participants can elect to defer certain compensation. Accounts will grow on a tax-deferred basis to the participant. Restricted investments included in the Consolidated Balance Sheets represent the fair value of the mutual funds and other security investments related to the Plan as of December 31, 2016 and 2015. Both realized and unrealized gains and losses are included in income and expense and offset the change in the deferred compensation liability. We provide a 50% match on the first 6% of employee compensation deferred under the Plan, with a maximum match equivalent to 3% of base salary. In addition, we have a legacy deferred compensation plan. There are no new contributions being made into this legacy plan. We incurred expense of $0.3 million per year related to the employer match for these plans in 2016, 2015 and 2014. The liabilities related to these plans as of December 31, 2016 and 2015 were $21.1 million and $21.3 million, respectively.

Legal Matters	12 Months Ended
Legal Matters	Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]
Legal Matters	NOTE 15. Legal Matters Robles On January 25, 2013, a complaint was filed in the U.S. District Court for the Eastern District of California (Sacramento Division) by Salvador Robles against our subsidiary, Comtrak Logistics, Inc., now known as Hub Group Trucking, Inc. Mr. Robles drove a truck for Hub Group Trucking in California, first as an independent contractor and then as an employee. The action was brought on behalf of a class comprised of present and former California-based truck drivers for Hub Group Trucking who were classified as independent contractors, from January 2009 to August 2014. The complaint alleges Hub Group Trucking has misclassified such drivers as independent contractors and that such drivers were employees. The complaint asserts various violations of the California Labor Code and claims that Hub Group Trucking has engaged in unfair competition practices. The complaint seeks, among other things, declaratory and injunctive relief, compensatory damages and attorney’s fees. In May 2013, the complaint was amended to add similar claims based on Mr. Robles’ status as an employed company driver. These additional claims are only on behalf of Mr. Robles and not a putative class. The Company believes that the California independent contractor truck drivers were properly classified as independent contractors at all times. Nevertheless, because lawsuits are expensive, time-consuming and could interrupt our business operations, Hub Group Trucking decided to make settlement offers to individual drivers with respect to the claims alleged in this lawsuit, without admitting liability. As of September 30, 2016, 93% of the California drivers have accepted the settlement offers. In late 2014, Hub Group Trucking decided to convert its model from independent contractors to employee drivers in California. In early 2016, Hub Group Trucking closed its operations in Southern California. On April 3, 2015, the Robles case was transferred to the U.S. District Court for the Western District of Tennessee (Western Division) in Memphis. In May 2015, the plaintiffs in the Robles case filed a Second Amended Complaint (“SAC”) which names 334 current and former Hub Group Trucking drivers as “interested putative class members.” In addition to reasserting their existing claims, the SAC includes claims post-conversion, added two new plaintiffs and seeks a judicial declaration that the settlement agreements are unenforceable. In June 2015, Hub Group Trucking filed a motion to dismiss the SAC and on July 19, 2016, Hub Group Trucking’s motion to dismiss was granted in part, and denied in part, by the District Court. The motion to dismiss was granted for the claims of all purported class members who have signed settlement agreements and on plaintiffs’ claims based on quantum merit and it was denied with respect to federal preemption and choice of law. On August 11, 2016, Plaintiffs filed a motion to clarify whether the Court’s dismissal of the claims of all purported class members who signed settlement agreements was with or without prejudice and, if the dismissal was with prejudice, Plaintiffs moved the Court to revise and reconsider the order. Plaintiffs’ motion to clarify is fully briefed and the parties are awaiting a decision by the Court. Adame, Et Al. v Hub Group, Inc., Et Al. On August 5, 2015, the Plaintiffs’ law firm in the Robles case filed a lawsuit in state court in San Bernardino County, California on behalf of 63 named Plaintiffs against Hub Group Trucking and five Company employees. The lawsuit alleges claims similar to those being made in Robles and seeks monetary penalties under the Private Attorneys General Act. Of the 63 named Plaintiffs, at least 58 of them previously accepted the settlement offers referenced above. On October 29, 2015, Defendants filed a notice of removal to remove the case from state court in San Bernardino to federal court in the Central District of California. On November 19, 2015, Defendants filed a motion to transfer the case to federal court in Memphis, Tennessee and also filed a motion to dismiss the case pursuant to a clause in the independent contractor agreement stating that Tennessee law applies. Also on November 19, 2015, Plaintiffs filed a motion to remand the case back to state court, claiming that the federal court lacks jurisdiction over the case. The court granted Plaintiffs’ motion to remand to the state court in San Bernardino County on April 7, 2016, mooting Defendants’ motions to transfer and dismiss. On July 11, 2016, Defendants filed several motions in state court, asking the court to dismiss and/or stay the Plaintiffs’ suit for various reasons. On July 11, 2016, Defendants filed several motions in state court, asking the court to dismiss and/or stay the Plaintiffs’ suit for various reasons. During a hearing on October 5, 2016, the judge issued an oral tentative ruling stating that the choice of forum provision was unenforceable. On Defendants’ motion to dismiss the individual defendants, the court allowed for supplemental briefing for additional arguments regarding individual liability under PAGA. The court did not reach a decision regarding the motion to stay pending the outcome in Robles. Plaintiffs filed their supplemental brief on November 9, 2016 to which Defendants responded on December 6, 2016. The court had scheduled a hearing for January 19, 2017, which was continued until February 21, 2017. Lubinski On September 12, 2014, a complaint was filed in the U.S. District Court for the Northern District of Illinois (Eastern Division) by Christian Lubinski against Hub Group Trucking. The action was brought on behalf of a class comprised of present and former owner-operators providing delivery services in Illinois for Hub Group Trucking. The complaint alleged Hub Group Trucking misclassified such drivers as independent contractors and that such drivers were employees. The complaint also alleged that Hub Group Trucking made illegal deductions from the drivers’ pay and failed to properly compensate the drivers for all hours worked, reimburse business expenses, pay employment taxes, and provide workers’ compensation and other employment benefits. The complaint asserted various violations of the Illinois Wage Payment and Collections Act and claimed that Hub Group Trucking was unjustly enriched. The complaint sought, among other things, monetary damages for the relevant statutory period and attorneys’ fees. On October 24, 2014, the Lubinski case was transferred to the U.S. District Court for the Western District of Tennessee (Western Division), in Memphis. On September 22, 2015, the court granted Hub Group Trucking’s motion to dismiss Lubinski’s Illinois law claims with prejudice based on the contractual choice of law provision, which provided that Tennessee law governed. The court denied as moot Hub Group Trucking’s motion to dismiss based on federal preemption. On October 2, 2015, Lubinski appealed this order to the United States Court of Appeals for the Sixth Circuit in Cincinnati. On December 17, 2015, Lubinski filed his brief in support of his appeal of the motion to dismiss, asserting for the first time that the federal court did not have jurisdiction over the case due to a lack of diversity of citizenship. Hub Group Trucking filed its response brief on January 19, 2016, in part arguing that Lubinski had himself alleged diversity of citizenship in his complaint. Lubinski filed his reply brief on February 5, 2016. On April 1, 2016, the Sixth Circuit remanded the case to the district court—without ruling on the merits—for the district court “to consider the argument and admit the evidence necessary to determine the question of federal subject-matter jurisdiction.” On July 11, 2016, with his federal district court case still pending, Lubinski filed an additional putative class action Complaint, with the same claims, in Illinois state court. On the same day, Hub Group Trucking filed a declaratory judgment complaint in Tennessee state court, seeking a declaration that Lubinski’s claims must be heard in Tennessee (based on the contractual choice-of-forum provision) and that the claims must be dismissed because Tennessee law controls and Lubinski’s claims are preempted by federal law. The parties agreed to stay all proceedings in Illinois and Tennessee state court until the federal court jurisdiction question is decided. On October 26, 2016, Lubinski filed a motion to dismiss for lack of federal subject-matter jurisdiction and a motion for leave to file an amended complaint, attempting to “clarify” the putative class definition and arguing that the Class Action Fairness Act’s exceptions to jurisdiction apply. Hub Group Trucking filed its response to the motion to dismiss for lack of subject-matter jurisdiction on November 29, 2016, and Lubinski filed his reply on December 13, 2016. On January 3, 2017, the Court held a hearing on Lubinski’s motion to dismiss. On January 9, 2017, the Court ordered supplemental briefing on the citizenship of the putative class as of the date the complaint was filed in September 2014. We cannot reasonably estimate at this time the possible loss or range of loss, if any, that may arise from the remaining unresolved claims in the above mentioned lawsuits. We are a party to other litigation incident to our business, including claims for personal injury and/or property damage, bankruptcy preference claims, and claims regarding freight lost or damaged in transit, improperly shipped or improperly billed. Some of the lawsuits to which we are party are covered by insurance and are being defended by our insurance carriers. Some of the lawsuits are not covered by insurance and we defend those ourselves. We do not believe that the outcome of this litigation will have a materially adverse effect on our financial position or results of operations.

Stock Buy Back Plans

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Stock Buy Back Plans

NOTE 16. Stock Buy Back Plans

On February 2, 2016, our Board of Directors authorized the purchase of up to $100 million of our Class A Common Stock. This authorization expired on December 31, 2016. We purchased 2,672,227 shares under this authorization during the year ended December 31, 2016, completing the authorization.

We purchased 73,546 shares for $2.5 million and 77,732 shares for $2.9 million during the years ended December 31, 2016 and 2015, respectively, related to employee withholding upon vesting of restricted stock.

The following table displays the number of shares purchased during 2016 and the maximum value of shares that may yet be purchased under the plan:

							Maximum Value of
	Total				Total Number of		Shares that May Yet
	Number of		Average		Shares Purchased as		Be Purchased Under
	Shares		Price Paid		Part of Publicly		the Plan
	Purchased		Per Share		Announced Plan		(in 000’s)
January 1 to January 31		-	$	-		-	$	100,000
February 1 to February 28		943,983	$	33.97		943,983	$	67,932
March 1 to March 31		269,099	$	38.27		269,099	$	57,632
April 1 to April 30		454,729	$	38.78		454,729	$	40,000
May 1 to May 31		307,798	$	38.34		307,798	$	28,199
June 1 to June 30		330,265	$	39.96		330,265	$	15,000
July 1 to July 31		66,422	$	41.03		66,422	$	12,275
August 1 to August 31		299,931	$	40.92		299,931	$	-
September 1 to September 30		-	$	-		-	$	-
October 1 to October 31		-	$	-		-	$	-
November 1 to November 30		-	$	-		-	$	-
December 1 to December 31		-	$	-		-	$	-
Total		2,672,227	$	37.42		2,672,227	$	-

This table excludes 73,546 shares we purchased for $2.5 million during the year ended December 31, 2016 related to employee withholding upon vesting of restricted stock.

Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

NOTE 17. Selected Quarterly Financial Data (Unaudited)

The following table sets forth the selected quarterly financial data for each of the quarters in 2016 (in thousands, except per share amounts):

	Quarter Ended
	March 31,		June 30,		September 30,		December 31,
	2016		2016		2016		2016
Year Ended December 31, 2016:
Revenue	$	805,859	$	855,557	$	932,814	$	978,560
Gross margin		108,387		114,490		111,454		120,454
Operating income		28,843		34,297		29,855		30,839
Net income		17,965		20,671		17,924		18,244
Basic earnings per share	$	0.51	$	0.61	$	0.54	$	0.55
Diluted earnings per share	$	0.51	$	0.61	$	0.54	$	0.55

The following table sets forth the selected quarterly financial data for each of the quarters in 2015 (in thousands, except per share amounts):

	Quarter Ended
	March 31,		June 30,		September 30,		December 31,
	2015		2015		2015		2015
Year Ended December 31, 2015:
Revenue	$	835,941	$	899,513	$	899,869	$	890,272
Gross margin		89,128		101,729		105,064		116,774
Operating income		18,795		29,476		33,418		35,341
Net income		10,276		18,467		19,832		22,374
Basic earnings per share	$	0.28	$	0.51	$	0.55	$	0.63
Diluted earnings per share	$	0.28	$	0.51	$	0.55	$	0.63

VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2016

Valuation And Qualifying Accounts [Abstract]

VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II

HUB GROUP, INC.

VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

Allowance for uncollectible trade accounts

	Balance at		Charged to		Charged to						Balance at
Year Ended	Beginning of		Costs &		Other						End of
December 31:	Year		Expenses		Accounts (1)			Deductions (2)			Year

2016	$	5,215,000	$	90,000	$	146,000		$	(40,000	)	$	5,411,000

2015	$	6,990,000	$	270,000	$	(2,037,000	)	$	(8,000	)	$	5,215,000

2014	$	7,446,000	$	129,000	$	(565,000	)	$	(20,000	)	$	6,990,000

Deferred tax valuation allowance

	Balance at		Charged to		Balance at
Year Ended	Beginning of		Costs &		End of
December 31:	Year		Expenses		Year

2016	$	108,000	$	348,000	$	456,000

2015	$	108,000	$	-	$	108,000

2014	$	108,000	$	-	$	108,000

(1)	Expected customer account adjustments charged to revenue and write-offs, net of recoveries.

(2)	Represents bad debt recoveries.

Description of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Business	Business: Hub Group, Inc. (“we”, “us” or “our”) provides intermodal transportation services utilizing primarily third party arrangements with railroads. Drayage can be provided by our subsidiary, Hub Group Trucking, Inc., or a third party company. We also arrange for transportation of freight by truck and perform logistics services. Transportation services are provided through our legacy business and our acquisition, Mode Transportation, LLC. We report two distinct business segments. The first segment is Mode, which includes the Mode business we acquired on April 1, 2011. The other segment is Hub, which is all business other than Mode. “Hub Group” includes both segments.
Principles of Consolidation	Principles of Consolidation: The consolidated financial statements include our accounts and all entities in which we have more than a 50% equity ownership or otherwise exercise unilateral control. All significant intercompany balances and transactions have been eliminated.
Cash and Cash Equivalents	Cash and Cash Equivalents: We consider as cash equivalents all highly liquid instruments with an original maturity of three months or less. As of December 31, 2016 and 2015, our cash and temporary investments were with high quality financial institutions in DDAs (Demand Deposit Accounts) and Savings Accounts.
Accounts Receivable and Allowance for Uncollectible Accounts	Accounts Receivable and Allowance for Uncollectible Accounts: In the normal course of business, we extend credit to customers after a review of each customer’s credit history. An allowance for uncollectible trade accounts has been established through an analysis of the accounts receivable aging, an assessment of collectability based on historical trends and an evaluation based on current economic conditions. To be more specific, we reserve a portion of every account balance that has aged over one year, a portion of receivables for customers in bankruptcy and certain account balances specifically identified as uncollectible. On an annual basis, we perform a hindsight analysis on Hub and Mode separately to determine each segment’s experience in collecting account balances over one year old and account balances in bankruptcy. We then use this hindsight analysis to establish our reserves for receivables over one year and in bankruptcy. In establishing a reserve for certain account balances specifically identified as uncollectible, we consider the aging of the customer receivables, the specific details as to why the receivable has not been paid, the customer’s current and projected financial results, the customer’s ability to meet and sustain their financial commitments, the positive or negative effects of the current and projected industry outlook and the general economic conditions. The allowance for uncollectible accounts is reported on the balance sheet in net accounts receivable. Our reserve for uncollectible accounts was approximately $5.4 million and $5.2 million as of December 31, 2016 and 2015, respectively. Receivables are written off once collection efforts have been exhausted. Recoveries of receivables previously charged off are recorded when received.
Property and Equipment	Property and Equipment: Property and equipment are stated at cost. Depreciation of property and equipment is computed using the straight-line method at rates adequate to depreciate the cost of the applicable assets over their expected useful lives: building and improvements, up to 40 years; leasehold improvements, the shorter of useful life or lease term; computer equipment and software, up to 10 years; furniture and equipment, up to 10 years; and transportation equipment up to 15 years. Direct costs related to internally developed software projects are capitalized and amortized over their expected useful life on a straight-line basis not to exceed 10 years. Interest is capitalized on qualifying assets under development for internal use. Maintenance and repairs are charged to operations as incurred and major improvements are capitalized. The cost of assets retired or otherwise disposed of and the accumulated depreciation thereon are removed from the accounts with any gain or loss realized upon sale or disposal charged or credited to operations. We review long-lived assets for impairment when events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. In the event that the undiscounted future cash flows resulting from the use of the asset group is less than the carrying amount, an impairment loss equal to the excess of the assets carrying amount over its fair value, less cost to dispose, is recorded.
Goodwill and Other Intangibles	Goodwill and Other Intangibles: Goodwill represents the excess of purchase price over the fair market value of net assets acquired in connection with our business combinations. Goodwill and intangible assets that have indefinite useful lives are not amortized but are subject to annual impairment tests. We test goodwill for impairment annually in the fourth quarter or when events or changes in circumstances indicate the carrying value of this asset might exceed the current fair value. We test goodwill for impairment at the reporting unit level. We assess qualitative factors such as current company performance and overall economic factors to determine if it is more-likely-than-not that the goodwill might be impaired and whether it is necessary to perform the quantitative goodwill 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. In 2016 and 2015, we performed the qualitative assessment on both the Hub and Mode reporting units and determined it was not, more-likely-than-not, that goodwill might be impaired. We evaluate the potential impairment of finite-lived acquired intangible assets when impairment indicators exist. If the carrying value is no longer recoverable based upon the undiscounted future cash flows of the asset, the amount of the impairment is the difference between the carrying amount and the fair value of the asset.
Concentration of Credit Risk	Concentration of Credit Risk: Our financial instruments that are exposed to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We place our cash and temporary investments with high quality financial institutions in DDAs (Demand Deposit Accounts) and Savings Accounts. We primarily serve customers located throughout the United States with no significant concentration in any one region. No one customer accounted for more than 10% of revenue in 2016, 2015 or 2014. We review a customer’s credit history before extending credit. In addition, we routinely assess the financial strength of our customers and, as a consequence, believe that our trade accounts receivable risk is limited.
Revenue Recognition	Revenue Recognition: Revenue is recognized at the time 1) persuasive evidence of an arrangement exists, 2) services have been rendered, 3) the sales price is fixed and determinable and 4) collectability is reasonably assured. Revenue and related transportation costs are recognized based on relative transit time. Further, in most cases, we report our revenue on a gross basis because we are the primary obligor as we are responsible for providing the service desired by the customer. Our customers view us as responsible for fulfillment including the acceptability of the service. Services requirements may include, for example, on-time delivery, handling freight loss and damage claims, setting up appointments for pick-up and delivery and tracing shipments in transit. We have discretion in setting sales prices and as a result, the amount we earn varies. In addition, we have the discretion to select our vendors from multiple suppliers for the services ordered by our customers. Finally, we have credit risk for our receivables. These three factors, discretion in setting prices, discretion in selecting vendors and credit risk, further support reporting revenue on a gross basis for most of our revenue.
Provision for Income Taxes	Provision for Income Taxes: Deferred income taxes are recognized for the future tax effects of temporary differences between financial and income tax reporting using tax rates in effect for the years in which the differences are expected to reverse. We believe that it is more likely than not that our deferred tax assets will be realized based on future taxable income projections with two exceptions for which we have established valuation allowances. We have established valuation allowances of $0.1 million related to state tax net operating losses and $0.4 million related to state incentive tax credit carryforwards. In the event the probability of realizing the remaining deferred tax assets do not meet the more likely than not threshold in the future, a valuation allowance would be established for the deferred tax assets deemed unrecoverable. Tax liabilities are recorded when, in management’s judgment, a tax position does not meet the more likely than not threshold for recognition as prescribed by the guidance. For tax positions that meet the more likely than not threshold, a tax liability may be recorded depending on management’s assessment of how the tax position will ultimately be settled. We recognize interest expense and penalties related to income tax liabilities in our provision for income taxes.
Earnings Per Common Share	Earnings Per Common Share: Basic earnings per common share are based on the average quarterly weighted average number of Class A and Class B shares of common stock outstanding. Diluted earnings per common share are adjusted for the assumed exercise of dilutive stock options and for restricted stock which are both computed using the treasury stock method.
Stock Based Compensation	Stock Based Compensation: Share-based compensation includes the restricted stock awards expected to vest based on the grant date fair value. Compensation expense is amortized straight-line over the vesting period including an estimate of forfeitures and is included in salaries and benefits. We present excess tax benefits resulting from the exercise of share-based compensation as financing cash in-flows and as operating cash out-flows in the Consolidated Statements of Cash Flows.
New Pronouncements	New Pronouncements: In May 2014, the FASB issued Update No. 2014-09—Revenue from Contracts with Customers (Topic 606). This Standard provides guidance on how to recognize 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 addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The FASB has recently issued several amendments to the standard, including clarification on accounting for principal vs agent and identifying performance obligations. The guidance permits two methods of adoption: retrospectively to each prior reporting period presented (full retrospective method), or retrospectively with the cumulative effect of initially applying the guidance recognized at the date of initial application (the cumulative catch-up transition method). We currently anticipate adopting the standard using the full retrospective method to restate each prior reporting period presented. Early application is permitted for annual reporting periods beginning after December 15, 2016. We plan to adopt this standard January 1, 2018, as required. While we are continuing to assess all potential impacts of the standard, other than additional disclosures, we do not anticipate that this standard will have a material impact on our consolidated financial statements. We have analyzed our revenue stream, began analysis of our current contracts and will continue to analyze these contracts. In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (“ASU 2014-15”). ASU 2014-15 explicitly requires management to assess an entity’s ability to continue as a going concern, and to provide related footnote disclosure in certain circumstances. The new standard is effective for all entities in the first annual period ending after December 15, 2016. We adopted this standard for the year ended December 31, 2016 and it did not have an impact on our financial condition, results of operations and cash flows. In November 2015, the FASB issued Update No. 2015-17—Income Taxes (Topic 740). This Standard provides guidance on the balance sheet classification of deferred taxes, amending the accounting for income taxes and requiring all deferred tax assets and liabilities to be classified as non-current on the consolidated balance sheet. For public organizations, the guidance in the update is effective for annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Early application is permitted. We elected to early adopt this standard as of March 31, 2016 to simplify the presentation of our deferred income taxes and applied the guidance prospectively. As a result, we have presented all deferred tax assets and liabilities as non-current on our consolidated balance sheet as of December 31, 2016, but have not reclassified deferred tax assets and liabilities as noncurrent on our consolidated balance sheet as of December 31, 2015. In February 2016, the FASB issued ASU No. 2016-02, Leases, which requires lessees to recognize a right-to-use asset and a lease obligation for all leases. Lessees are permitted to make an accounting policy election to not recognize an asset and liability for leases with a term of twelve months or less. The new standard will become effective beginning with the first quarter of 2019. Early adoption of the standard is permitted. We plan to adopt this standard January 1, 2019, as required. We are currently evaluating the impacts the adoption of this accounting guidance will have on the consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting, which simplifies several aspects of the accounting for employee share-based payment transactions including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification of related amounts within the statement of cash flows. The new standard will become effective beginning with the first quarter of 2017, with early adoption permitted. We will adopt ASU 2016-09 in the first quarter of 2017 and do not expect the adoption to have a material impact on our consolidated financial statements. In 2016, the FASB issued new guidance that requires credit losses on financial assets measured at amortized cost basis to be presented at the net amount expected to be collected, not based on incurred losses. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018 is permitted. We are evaluating the impact of adopting this new accounting guidance on our consolidated financial statements. In 2016, the FASB issued new guidance which clarifies the classification of certain cash receipts and cash payments in the statement of cash flows, including debt prepayment or extinguishment costs, settlement of contingent consideration arising from a business combination, insurance settlement proceeds, and distributions from certain equity method investees. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. We are evaluating the impact of adopting this new accounting guidance on our consolidated financial statements.
Use of Estimates	Use of Estimates: The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting period. Significant estimates include the allowance for doubtful accounts, exposure under our insurance and claims policies and useful lives of equipment. Actual results could differ from those estimates.

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Reconciliation of Earnings Per Share

The following is a reconciliation of our earnings per share (in thousands, except for per share data):

	Years Ended, December 31,
	2016		2015		2014

Net income for basic and diluted earnings per share	$	74,805	$	70,949	$	51,558

Weighted average shares outstanding - basic		33,841		35,876		36,590

Dilutive effect of stock options and restricted stock		108		92		142

Weighted average shares outstanding - diluted		33,949		35,968		36,732

Earnings per share - basic	$	2.21	$	1.98	$	1.41

Earnings per share - diluted	$	2.20	$	1.97	$	1.40

Business Segments (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Summary of Operating Results

	Twelve Months									Twelve Months
	Ended December 31, 2016									Ended December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Revenue	$	2,734,541	$	948,735	$	(110,486	)	$	3,572,790	$	2,679,318	$	928,661	$	(82,384	)	$	3,525,595
Transportation costs		2,404,946		823,545		(110,486	)		3,118,005		2,385,197		810,087		(82,384	)		3,112,900
Gross margin		329,595		125,190		-			454,785		294,121		118,574		-			412,695

Costs and expenses:
Salaries and benefits		165,136		15,323		-			180,459		143,993		14,945		-			158,938
Agent fees and commissions		66		72,830		-			72,896		56		68,668		-			68,724
General and administrative		60,811		7,819		-			68,630		53,023		6,992		-			60,015
Depreciation and amortization		7,698		1,268		-			8,966		6,688		1,300		-			7,988
Total costs and expenses		233,711		97,240		-			330,951		203,760		91,905		-			295,665

Operating income	$	95,884	$	27,950	$	-		$	123,834		90,361		26,669		-			117,030

Capital expenditures	$	106,316	$	1,093	$	-		$	107,409	$	79,860	$	3,182	$	-		$	83,042

	Twelve Months
	Ended December 31, 2014
					Inter-			Hub
					Segment			Group
	Hub		Mode		Elims			Total
Revenue	$	2,722,799	$	931,131	$	(82,804	)	$	3,571,126
Transportation costs		2,461,144		822,351		(82,804	)		3,200,691
Gross margin		261,655		108,780		-			370,435

Costs and expenses:
Salaries and benefits		122,097		14,383		-			136,480
Agent fees and commissions		45		61,996		-			62,041
General and administrative		51,108		6,906		-			58,014
Depreciation and amortization		6,238		1,561		-			7,799
Driver settelments and related costs		10,343		-		-			10,343
Impairment of software		11,881		-		-			11,881
Total costs and expenses		201,712		84,846		-			286,558

Operating income	$	59,943	$	23,934	$	-		$	83,877

Capital expenditures	$	118,640	$	531	$	-		$	119,171

Schedule of Assets

	As of December 31, 2016									As of December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Total assets	$	1,178,110	$	191,374	$	(9,225	)	$	1,360,259	$	1,127,042	$	181,514	$	(7,410	)	$	1,301,146
Goodwill		232,987		29,389		-			262,376		233,205		29,389		-			262,594

Summary of Revenue by Segment and Business Line

The following tables summarize our revenue by segment and business line (in thousands):

	Twelve Months									Twelve Months
	Ended December 31, 2016									Ended December 31, 2015
					Inter-			Hub						Inter-			Hub
					Segment			Group						Segment			Group
	Hub		Mode		Elims			Total		Hub		Mode		Elims			Total
Intermodal	$	1,785,865	$	486,758	$	(81,556	)	$	2,191,067	$	1,792,046	$	483,910	$	(78,688	)	$	2,197,268
Truck brokerage		391,901		308,055		(1,456	)		698,500		355,402		314,498		(1,908	)		667,992
Logistics		556,775		153,922		(27,474	)		683,223		531,870		130,253		(1,788	)		660,335
Total revenue	$	2,734,541	$	948,735	$	(110,486	)	$	3,572,790	$	2,679,318	$	928,661	$	(82,384	)	$	3,525,595

	Twelve Months
	Ended December 31, 2014
					Inter-			Hub
					Segment			Group
	Hub		Mode		Elims			Total
Intermodal	$	1,815,842	$	466,859	$	(79,406	)	$	2,203,295
Truck brokerage		338,590		335,587		(946	)		673,231
Logistics		568,367		128,685		(2,452	)		694,600
Total revenue	$	2,722,799	$	931,131	$	(82,804	)	$	3,571,126

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Carrying Amount of Goodwill

The following table presents the carrying amount of goodwill (in thousands):

						Hub Group
	Hub			Mode		Total
Balance at January 1, 2015	$	233,424		$	29,389	$	262,813
Other		(219	)	-			(219	)
Balance at December 31, 2015		233,205			29,389		262,594
Other		(218	)	-			(218	)
Balance at December 31, 2016	$	232,987		$	29,389	$	262,376

Components of Other Intangible Assets

The components of the “Other intangible assets” are as follows (in thousands):

						Net
	Gross		Accumulated			Carrying
As of December 31, 2016:	Amount		Amortization			Value		Life

Hub
Customer relationships	$	5,181	$	(3,792	)	$	1,389	7-15 years

Mode
Agency/customer relationships	$	15,362	$	(4,907	)	$	10,455	18 years


Hub Group Total	$	20,543	$	(8,699	)	$	11,844

						Net
	Gross		Accumulated			Carrying
As of December 31, 2015:	Amount		Amortization			Value		Life

Hub
Customer relationships	$	5,181	$	(3,350	)	$	1,831	7-15 years

Mode
Agency/customer relationships	$	15,362	$	(4,054	)	$	11,308	18 years

Hub Group Total	$	20,543	$	(7,404	)	$	13,139

Amortization Expense

Amortization expense for the next five years is as follows (in thousands):

					Hub Group
	Hub		Mode		Total
2017	$	442	$	853	$	1,295
2018		395		853		1,248
2019		255		853		1,108
2020		255		853		1,108
2021		42		853		895

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Reconciliation of Effective Tax Rate to Federal Statutory Tax Rate

The following is a reconciliation of our effective tax rate to the federal statutory tax rate:

	Years Ended December 31,
	2016				2015			2014
U.S. federal statutory rate		35.0		%		35.0	%		35.0		%
State taxes, net of federal benefit		2.6			2.4			2.9
State incentives		(0.2	)		(0.5)				(0.8	)
State law changes		0.3			(0.9)				(0.9	)
Nondeductible expenses		0.7			0.4				0.9
Other		-			-				(0.1	)
Net effective rate		38.4		%		36.4	%		37.0		%

Summary of Provision for Income Taxes

The following is a summary of our provision for income taxes (in thousands):

	Years Ended December 31,
	2016			2015			2014
Current
Federal	$	30,324		$	21,363		$	5,939
State and local		3,296			2,900			445
Foreign		108			284			249
		33,728			24,547			6,633

Deferred
Federal		11,981			16,538			23,600
State and local		971			(346	)		191
Foreign		(64	)		(106	)		(115	)
		12,888			16,086			23,676

Total provision	$	46,616		$	40,633		$	30,309

Summary of Deferred Tax Assets and Liabilities Presented as Noncurrent

In the following summary of our deferred tax assets and liabilities (in thousands), however, we are presenting all the deferred tax asset and liability balances as of both December 31, 2016 and December 31, 2015 as noncurrent for better year over year comparability:

	December 31,
	2016			2015
Accrued compensation		20,651			18,448
Other reserves		8,580			4,319
Tax credit carryforwards		1,694			1,257
Operating loss carryforwards		1,399			1,914
Total gross deferred income taxes		32,324			25,938
Valuation allowances		(456	)		(108	)
Total deferred tax assets		31,868			25,830

Prepaids		(3,401	)		(3,448	)
Other receivables		(3,051	)		(4,493	)
Property and equipment		(105,905	)		(87,148	)
Goodwill		(84,170	)		(82,511	)
Total deferred tax liabilities		(196,527	)		(177,600	)

Total deferred taxes	$	(164,659	)	$	(151,770	)

Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	2016			2015
Gross unrecognized tax benefits - beginning of the year	$	1,139		$	1,065
Gross increases related to prior year tax positions		394			166
Gross increases related to current year tax positions		488			153
Lapse of applicable statute of limitations		(189	)		(245	)
Gross unrecognized tax benefits - end of year	$	1,832		$	1,139

Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property and Equipment

Property and equipment consist of the following (in thousands):

	December 31,
	2016			2015
Land	$	24,708		$	9,855
Building and improvements		36,269			35,267
Leasehold improvements		5,016			4,419
Computer equipment and software		91,302			77,887
Furniture and equipment		13,852			13,260
Transportation equipment		472,634			405,322
Construction in process		450			-
		644,231			546,010
Less: Accumulated depreciation and amortization		(205,637	)		(171,163	)
Property and Equipment, net	$	438,594		$	374,847

Long-Term Debt and Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Outstanding Debt

Our outstanding debt is as follows (in thousands):

	Period Ended
	December 31,			December 31,
	2016			2015
Secured Equipment Notes due on various dates in 2021 with monthly principal and interest payments between $0.01 million and $0.3 million commencing on various dates in 2016 and 2017; interest is paid monthly at a fixed annual rate between 2.04% and 2.96%	$	59,836		$	-

Secured Equipment Notes due on various dates in 2020 with monthly principal and interest payments between $0.04 million and $0.4 million commencing on various dates in 2015 and 2016; interest is paid monthly at a fixed annual rate between 1.72% and 2.26%		48,633			61,206

Secured Equipment Notes due on various dates in 2019 with monthly principal and interest payments between $0.08 million and $0.4 million commencing on various dates in 2014; interest is paid monthly at a fixed annual rate between 1.87% and 2.24%		49,464			67,486

Secured Equipment Notes due in June 2018 with quarterly principal and interest payments of $0.5 million commencing in August 2013; interest is paid quarterly at a fixed annual rate between 1.9% and 2.0%		2,759			4,612
		160,692			133,304

Less current portion		(45,163	)		(32,409	)
Total long-term debt	$	115,529		$	100,895

Summary of Aggregate Principal Payments

Aggregate principal payments, in thousands, due subsequent to December 31, 2016, are as follows:

2017	$	45,163
2018		44,466
2019		38,187
2020		22,677
2021		10,199
	$	160,692

Leases, User Charges and Commitments (Tables)

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

Future Payments Due

Future Payments Due:

				Operating
				Leases and
	Capital			Other
	Lease			Commitments		Total
2017	$	3,167		$	8,998	$	12,165
2018		3,167			7,311		10,478
2019		3,167			5,502		8,669
2020		3,176			5,274		8,450
2021		1,840			5,402		7,242
2022 and thereafter		-			7,489		7,489
	$	14,517		$	39,976	$	54,493
Less: Imputed interest		(1,244	)
Net capital lease liability	$	13,273

Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Non-Vested Restricted Stock Activity

The following table summarizes the non-vested restricted stock activity for the year ended December 31, 2016:

			Weighted
			Average
			Grant Date
Non-vested restricted stock	Shares		Fair Value

Non-vested January 1, 2016		696,097	$	37.02
Granted		420,368	$	33.46
Vested		(219,951)	$	36.34
Forfeited		(115,574)	$	35.75
Non-vested at December 31, 2016		780,940	$	35.48

Schedule of Restricted Stock Granted

The following table summarizes the restricted stock granted during the respective years:

Restricted stock grants	2016		2015		2014

Employees		394,243		316,531		273,910
Outside directors		26,125		22,000		20,000
Total		420,368		338,531		293,910

Weighted average grant date fair value	$	33.46	$	37.60	$	39.66

Vesting period	3-5 years		3-5 years		3-5 years

Stock Buy Back Plans (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Number of Shares Purchased and Maximum Value of Shares That yet be Purchased Under Plan

The following table displays the number of shares purchased during 2016 and the maximum value of shares that may yet be purchased under the plan:

							Maximum Value of
	Total				Total Number of		Shares that May Yet
	Number of		Average		Shares Purchased as		Be Purchased Under
	Shares		Price Paid		Part of Publicly		the Plan
	Purchased		Per Share		Announced Plan		(in 000’s)
January 1 to January 31		-	$	-		-	$	100,000
February 1 to February 28		943,983	$	33.97		943,983	$	67,932
March 1 to March 31		269,099	$	38.27		269,099	$	57,632
April 1 to April 30		454,729	$	38.78		454,729	$	40,000
May 1 to May 31		307,798	$	38.34		307,798	$	28,199
June 1 to June 30		330,265	$	39.96		330,265	$	15,000
July 1 to July 31		66,422	$	41.03		66,422	$	12,275
August 1 to August 31		299,931	$	40.92		299,931	$	-
September 1 to September 30		-	$	-		-	$	-
October 1 to October 31		-	$	-		-	$	-
November 1 to November 30		-	$	-		-	$	-
December 1 to December 31		-	$	-		-	$	-
Total		2,672,227	$	37.42		2,672,227	$	-

Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Summary of Selected Quarterly Financial Data

The following table sets forth the selected quarterly financial data for each of the quarters in 2016 (in thousands, except per share amounts):

	Quarter Ended
	March 31,		June 30,		September 30,		December 31,
	2016		2016		2016		2016
Year Ended December 31, 2016:
Revenue	$	805,859	$	855,557	$	932,814	$	978,560
Gross margin		108,387		114,490		111,454		120,454
Operating income		28,843		34,297		29,855		30,839
Net income		17,965		20,671		17,924		18,244
Basic earnings per share	$	0.51	$	0.61	$	0.54	$	0.55
Diluted earnings per share	$	0.51	$	0.61	$	0.54	$	0.55

The following table sets forth the selected quarterly financial data for each of the quarters in 2015 (in thousands, except per share amounts):

	Quarter Ended
	March 31,		June 30,		September 30,		December 31,
	2015		2015		2015		2015
Year Ended December 31, 2015:
Revenue	$	835,941	$	899,513	$	899,869	$	890,272
Gross margin		89,128		101,729		105,064		116,774
Operating income		18,795		29,476		33,418		35,341
Net income		10,276		18,467		19,832		22,374
Basic earnings per share	$	0.28	$	0.51	$	0.55	$	0.63
Diluted earnings per share	$	0.28	$	0.51	$	0.55	$	0.63

Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) Segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Reporting business segments \| Segment	2
Reserve for uncollectible accounts	$ 5.4	$ 5.2
State tax net operating losses, valuation allowance	0.1
State [Member]
Summary Of Significant Accounting Policies [Line Items]
Incentive tax credit carryforwards	$ 0.4
Leasehold Improvements [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated life, description	The shorter of useful life or lease term.
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Ownership percentage	50.00%
Maximum [Member] \| Customer Concentration Risk [Member] \| Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Minimum percentage of revenue accounted for by one customer	10.00%	10.00%	10.00%
Maximum [Member] \| Building And Improvement [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated life	40 years
Maximum [Member] \| Computer Equipment and Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated life	10 years
Maximum [Member] \| Furniture and Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated life	10 years
Maximum [Member] \| Transportation Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated life	15 years
Maximum [Member] \| Software Development [Member]
Summary Of Significant Accounting Policies [Line Items]
Intangible assets estimated useful life	10 years

Capital Structure - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Preferred stock, shares authorized	2,000,000	2,000,000
Class B Common Stock [Member]
Class of Stock [Line Items]
Common stock, rights to vote	84
Class A Common Stock [Member]
Class of Stock [Line Items]
Common stock, rights to vote	one

Reconciliation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income for basic and diluted earnings per share	$ 18,244	$ 17,924	$ 20,671	$ 17,965	$ 22,374	$ 19,832	$ 18,467	$ 10,276	$ 74,805	$ 70,949	$ 51,558
Weighted average shares outstanding - basic									33,841	35,876	36,590
Dilutive effect of stock options and restricted stock									108	92	142
Weighted average shares outstanding - diluted									33,949	35,968	36,732
Earnings per share - basic	$ 0.55	$ 0.54	$ 0.61	$ 0.51	$ 0.63	$ 0.55	$ 0.51	$ 0.28	$ 2.21	$ 1.98	$ 1.41
Earnings per share - diluted	$ 0.55	$ 0.54	$ 0.61	$ 0.51	$ 0.63	$ 0.55	$ 0.51	$ 0.28	$ 2.20	$ 1.97	$ 1.40

Impairment of Software - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2014 USD ($)
Asset Impairment Charges [Abstract]
Software development cost	$ 11,881

Business Segments - Additional Information (Detail)	12 Months Ended
Business Segments - Additional Information (Detail)	Dec. 31, 2016 Segment
Segment Reporting Information [Line Items]
Reporting business segments	2
Number of railheads	one or more
Mode LLC [Member]
Segment Reporting Information [Line Items]
Business acquisition, date	Apr. 01, 2011

Summary of Operating Results (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 978,560	$ 932,814	$ 855,557	$ 805,859	$ 890,272	$ 899,869	$ 899,513	$ 835,941	$ 3,572,790	$ 3,525,595	$ 3,571,126
Transportation costs									3,118,005	3,112,900	3,200,691
Gross margin	120,454	111,454	114,490	108,387	116,774	105,064	101,729	89,128	454,785	412,695	370,435
Costs and expenses:
Salaries and benefits									180,459	158,938	136,480
Agent fees and commissions									72,896	68,724	62,041
General and administrative									68,630	60,015	58,014
Depreciation and amortization									8,966	7,988	7,799
Driver settlements and related costs											10,343
Impairment of software											11,881
Total costs and expenses									330,951	295,665	286,558
Operating income	$ 30,839	$ 29,855	$ 34,297	$ 28,843	$ 35,341	$ 33,418	$ 29,476	$ 18,795	123,834	117,030	83,877
Capital expenditures									107,409	83,042	119,171
Operating Segments [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Revenue									2,734,541	2,679,318	2,722,799
Transportation costs									2,404,946	2,385,197	2,461,144
Gross margin									329,595	294,121	261,655
Costs and expenses:
Salaries and benefits									165,136	143,993	122,097
Agent fees and commissions									66	56	45
General and administrative									60,811	53,023	51,108
Depreciation and amortization									7,698	6,688	6,238
Driver settlements and related costs											10,343
Impairment of software											11,881
Total costs and expenses									233,711	203,760	201,712
Operating income									95,884	90,361	59,943
Capital expenditures									106,316	79,860	118,640
Operating Segments [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Revenue									948,735	928,661	931,131
Transportation costs									823,545	810,087	822,351
Gross margin									125,190	118,574	108,780
Costs and expenses:
Salaries and benefits									15,323	14,945	14,383
Agent fees and commissions									72,830	68,668	61,996
General and administrative									7,819	6,992	6,906
Depreciation and amortization									1,268	1,300	1,561
Total costs and expenses									97,240	91,905	84,846
Operating income									27,950	26,669	23,934
Capital expenditures									1,093	3,182	531
Intersegment Elims [Member]
Segment Reporting Information [Line Items]
Revenue									(110,486)	(82,384)	(82,804)
Transportation costs									$ (110,486)	$ (82,384)	$ (82,804)

Schedule of Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Total assets	$ 1,360,259	$ 1,301,146
Goodwill	262,376	262,594	$ 262,813
Hub [Member]
Segment Reporting Information [Line Items]
Goodwill	232,987	233,205	$ 233,424
Operating Segments [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Total assets	1,178,110	1,127,042
Goodwill	232,987	233,205
Operating Segments [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Total assets	191,374	181,514
Goodwill	29,389	29,389
Intersegment Elims [Member]
Segment Reporting Information [Line Items]
Total assets	$ (9,225)	$ (7,410)

Summary of Revenue by Segment and Business Line (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue	$ 978,560	$ 932,814	$ 855,557	$ 805,859	$ 890,272	$ 899,869	$ 899,513	$ 835,941	$ 3,572,790	$ 3,525,595	$ 3,571,126
Intermodal [Member]
Segment Reporting Information [Line Items]
Revenue									2,191,067	2,197,268	2,203,295
Truck brokerage [Member]
Segment Reporting Information [Line Items]
Revenue									698,500	667,992	673,231
Logistics [Member]
Segment Reporting Information [Line Items]
Revenue									683,223	660,335	694,600
Operating Segments [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Revenue									2,734,541	2,679,318	2,722,799
Operating Segments [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Revenue									948,735	928,661	931,131
Operating Segments [Member] \| Intermodal [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Revenue									1,785,865	1,792,046	1,815,842
Operating Segments [Member] \| Intermodal [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Revenue									486,758	483,910	466,859
Operating Segments [Member] \| Truck brokerage [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Revenue									391,901	355,402	338,590
Operating Segments [Member] \| Truck brokerage [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Revenue									308,055	314,498	335,587
Operating Segments [Member] \| Logistics [Member] \| Hub [Member]
Segment Reporting Information [Line Items]
Revenue									556,775	531,870	568,367
Operating Segments [Member] \| Logistics [Member] \| Mode LLC [Member]
Segment Reporting Information [Line Items]
Revenue									153,922	130,253	128,685
Intersegment Elims [Member]
Segment Reporting Information [Line Items]
Revenue									(110,486)	(82,384)	(82,804)
Intersegment Elims [Member] \| Intermodal [Member]
Segment Reporting Information [Line Items]
Revenue									(81,556)	(78,688)	(79,406)
Intersegment Elims [Member] \| Truck brokerage [Member]
Segment Reporting Information [Line Items]
Revenue									(1,456)	(1,908)	(946)
Intersegment Elims [Member] \| Logistics [Member]
Segment Reporting Information [Line Items]
Revenue									$ (27,474)	$ (1,788)	$ (2,452)

Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Intangible Assets [Line Items]
Goodwill accumulated impairment loss	$ 0
Intangible assets, Amortization expense	$ 1,300,000	$ 1,300,000	$ 1,300,000
Hub [Member] \| Weighted Average [Member]
Intangible Assets [Line Items]
Weighted average life of definite lived intangible assets	3 years 7 months 7 days
Mode [Member] \| Weighted Average [Member]
Intangible Assets [Line Items]
Weighted average life of definite lived intangible assets	12 years 3 months

Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 262,594	$ 262,813
Other	(218)	(219)
Goodwill, Ending Balance	262,376	262,594
Hub [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	233,205	233,424
Other	(218)	(219)
Goodwill, Ending Balance	232,987	233,205
Mode [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	29,389	29,389
Other	0	0
Goodwill, Ending Balance	$ 29,389	$ 29,389

Components of Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Other Intangible Assets [Line Items]
Intangible Assets, Gross Amount	$ 20,543	$ 20,543
Finite-lived intangible assets, Accumulated Amortization	(8,699)	(7,404)
Intangible Assets, Net Carrying Value	11,844	13,139
Hub [Member] \| Customer Relationships [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	5,181	5,181
Finite-lived intangible assets, Accumulated Amortization	(3,792)	(3,350)
Finite-lived intangible assets, Net Carrying Value	$ 1,389	$ 1,831
Hub [Member] \| Customer Relationships [Member] \| Minimum [Member]
Other Intangible Assets [Line Items]
Intangible assets estimated useful life	7 years	7 years
Hub [Member] \| Customer Relationships [Member] \| Maximum [Member]
Other Intangible Assets [Line Items]
Intangible assets estimated useful life	15 years	15 years
Mode [Member] \| Agency/Customer Relationships [Member]
Other Intangible Assets [Line Items]
Finite-lived intangible assets, Gross Amount	$ 15,362	$ 15,362
Finite-lived intangible assets, Accumulated Amortization	(4,907)	(4,054)
Finite-lived intangible assets, Net Carrying Value	$ 10,455	$ 11,308
Intangible assets estimated useful life	18 years	18 years

Amortization Expense (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Finite Lived Intangible Assets [Line Items]
2017	$ 1,295
2018	1,248
2019	1,108
2020	1,108
2021	895
Hub [Member]
Finite Lived Intangible Assets [Line Items]
2017	442
2018	395
2019	255
2020	255
2021	42
Mode [Member]
Finite Lived Intangible Assets [Line Items]
2017	853
2018	853
2019	853
2020	853
2021	$ 853

Reconciliation of Effective Tax Rate to Federal Statutory Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	2.60%	2.40%	2.90%
State incentives	(0.20%)	(0.50%)	(0.80%)
State law changes	0.30%	(0.90%)	(0.90%)
Nondeductible expenses	0.70%	0.40%	0.90%
Other			(0.10%)
Net effective rate	38.40%	36.40%	37.00%

Summary of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
Federal	$ 30,324	$ 21,363	$ 5,939
State and local	3,296	2,900	445
Foreign	108	284	249
Current income tax expense, total	33,728	24,547	6,633
Deferred
Federal	11,981	16,538	23,600
State and local	971	(346)	191
Foreign	(64)	(106)	(115)
Deferred income tax expense, total	12,888	16,086	23,676
Total provision	$ 46,616	$ 40,633	$ 30,309

Summary of Deferred Tax Assets and Liabilities Presented as Noncurrent (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Accrued compensation	$ 20,651	$ 18,448
Other reserves	8,580	4,319
Tax credit carryforwards	1,694	1,257
Operating loss carryforwards	1,399	1,914
Total gross deferred income taxes	32,324	25,938
Valuation allowances	(456)	(108)
Total deferred tax assets	31,868	25,830
Prepaids	(3,401)	(3,448)
Other receivables	(3,051)	(4,493)
Property and equipment	(105,905)	(87,148)
Goodwill	(84,170)	(82,511)
Total deferred tax liabilities	(196,527)	(177,600)
Total deferred taxes	$ (164,659)	$ (151,770)

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Operating loss carryforwards	$ 1,399	$ 1,914
State incentive tax credit carryforwards	1,694	1,257
Valuation allowances	456	108
Unrecognized tax benefits	1,832	1,139	$ 1,065
Potential increase (decrease) in income tax provision	1,200	$ 700
Income tax interest and penalty recognized	15
State [Member] \| Net Operating Losses [Member]
Income Taxes [Line Items]
Valuation allowances	100
State [Member] \| Tax Incentive Credit Carryforwards [Member]
Income Taxes [Line Items]
Valuation allowances	$ 300
Minimum [Member]
Income Taxes [Line Items]
Operating loss carryforwards, expiration date	Dec. 31, 2017
Tax credit carryforward, expiration date	Dec. 31, 2018
Possible reduction in unrecognized tax benefits resulting from audit settlements	$ 500
Maximum [Member]
Income Taxes [Line Items]
Operating loss carryforwards, expiration date	Dec. 31, 2035
Tax credit carryforward, expiration date	Dec. 31, 2021
Possible increase in unrecognized tax benefits resulting from audit settlements	$ 500

Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Gross unrecognized tax benefits - beginning of the year	$ 1,139	$ 1,065
Gross increases related to prior year tax positions	394	166
Gross increases related to current year tax positions	488	153
Lapse of applicable statute of limitations	(189)	(245)
Gross unrecognized tax benefits - end of year	$ 1,832	$ 1,139

Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Fair Value Disclosures [Abstract]
Restricted investments	$ 20.9	$ 21.1

Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 644,231	$ 546,010
Less: Accumulated depreciation and amortization	(205,637)	(171,163)
Property and Equipment, net	438,594	374,847
Land [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	24,708	9,855
Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	36,269	35,267
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	5,016	4,419
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	91,302	77,887
Furniture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	13,852	13,260
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	472,634	$ 405,322
Construction In Progress [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 450

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 644,231	$ 546,010
Equipment, capital lease obligation				$ 26,400
Equipment, capital lease obligation, net	12,300	14,700
Depreciation and amortization expense related to property and equipment	43,400	35,900	$ 28,300
Amortization expense under capital lease obligation	2,300	2,600	$ 2,600
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	472,634	405,322
Computer Software and Hardware [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, gross	$ 91,302	$ 77,887

Long-Term Debt and Financing Arrangements - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2011 Chassis
Line Of Credit Facility [Line Items]
Maximum unsecured borrowing capacity				$ 50,000,000
Line of credit, expiration date			Dec. 31, 2018
Number of chassis leased \| Chassis					3,126
Chassis, lease agreement period (years)					10 years
Capital lease interest paid	$ 600,000	$ 700,000	$ 800,000
Standby Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Outstanding letters of credit	$ 11,800,000
Letters of credit expiration, years	2017
Revolving Line of Credit Facility [Member] \| Bank Revolving Line of Credit [Member]
Line Of Credit Facility [Line Items]
Unused and available borrowings under bank revolving line of credit	$ 38,200,000	$ 41,800,000
Minimum [Member]
Line Of Credit Facility [Line Items]
Commitment fee charged on the unused line of credit				0.10%
Interest coverage ratio				2.00%
Maximum [Member]
Line Of Credit Facility [Line Items]
Commitment fee charged on the unused line of credit				0.25%
Total leverage ratio				3.00%
LIBOR rate [Member] \| Minimum [Member]
Line Of Credit Facility [Line Items]
Interest rate under the Credit Agreement				1.00%
LIBOR rate [Member] \| Maximum [Member]
Line Of Credit Facility [Line Items]
Interest rate under the Credit Agreement				1.75%
Prime Rate [Member]
Line Of Credit Facility [Line Items]
Interest rate under the Credit Agreement				0.75%

Schedule of Outstanding Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Secured long-term debt	$ 160,692	$ 133,304
Less current portion	(45,163)	(32,409)
Total long-term debt	115,529	100,895
Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Secured long-term debt	59,836
Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Secured long-term debt	48,633	61,206
Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Secured long-term debt	49,464	67,486
Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Secured long-term debt	$ 2,759	$ 4,612

Schedule of Outstanding Debt (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2021
Payment Frequency	monthly
Secured Equipment Notes due in 2021 [Member] \| Commencing on 2016 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2016
Secured Equipment Notes due in 2021 [Member] \| Commencing on 2017 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2017
Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2020
Payment Frequency	monthly
Secured Equipment Notes due in 2020 [Member] \| Commencing on 2016 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2016
Secured Equipment Notes due in 2020 [Member] \| Commencing on 2015 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2015
Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Equipment notes due period	2019
Payment Frequency	monthly
Secured Equipment Notes due in 2019 [Member] \| Commencing on 2014 [Member]
Debt Instrument [Line Items]
Equipment notes, date of first required payment	2014
Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 500
Payment Frequency	quarterly
Equipment notes due	Jun. 30, 2018
Equipment notes, date of first required payment	Aug. 31, 2013
Minimum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 10
Interest rate secured debt	2.04%
Minimum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 40
Interest rate secured debt	1.72%
Minimum [Member] \| Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 80
Interest rate secured debt	1.87%
Minimum [Member] \| Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	1.90%
Maximum [Member] \| Secured Equipment Notes due in 2021 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 300
Interest rate secured debt	2.96%
Maximum [Member] \| Secured Equipment Notes due in 2020 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 400
Interest rate secured debt	2.26%
Maximum [Member] \| Secured Equipment Notes due in 2019 [Member]
Debt Instrument [Line Items]
Monthly payments	$ 400
Interest rate secured debt	2.24%
Maximum [Member] \| Secured Equipment Notes due in June 2018 [Member]
Debt Instrument [Line Items]
Interest rate secured debt	2.00%

Summary of Aggregate Principal Payments (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Debt Disclosure [Abstract]
2017	$ 45,163
2018	44,466
2019	38,187
2020	22,677
2021	10,199
Total Notes	$ 160,692

Leases, User Charges and Commitments - Future Payments Due (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Leases [Abstract]
Future Payments Due, Capital Lease, 2017	$ 3,167
Future Payments Due, Capital Lease, 2018	3,167
Future Payments Due, Capital Lease, 2019	3,167
Future Payments Due, Capital Lease, 2020	3,176
Future Payments Due, Capital Lease, 2021	1,840
Future Payments Due, Capital Lease, Total	14,517
Less: Imputed interest	(1,244)
Net capital lease liability	13,273
Future Payments Due, Operating Leases and Other Commitments, 2017	8,998
Future Payments Due, Operating Leases and Other Commitments, 2018	7,311
Future Payments Due, Operating Leases and Other Commitments, 2019	5,502
Future Payments Due, Operating Leases and Other Commitments, 2020	5,274
Future Payments Due, Operating Leases and Other Commitments, 2021	5,402
Future Payments Due, Operating Leases and Other Commitments, 2022 and thereafter	7,489
Future Payments Due, Operating Leases and Other Commitments, Total	39,976
Future Payments Due, Total Leases, 2017	12,165
Future Payments Due, Total Leases, 2018	10,478
Future Payments Due, Total Leases, 2019	8,669
Future Payments Due, Total Leases, 2020	8,450
Future Payments Due, Total Leases, 2021	7,242
Future Payments Due, Total Leases, 2022 and thereafter	7,489
Future Payments Due, Leases, Total	$ 54,493

Leases, User Charges and Commitments - Additional Information (Detail)	1 Months Ended	12 Months Ended
	Nov. 30, 2016 USD ($) Container	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Lease and Rental Expense [Line Items]
Rental expense		$ 8,300,000	$ 8,000,000	$ 8,100,000
Rail transportation charges		73,700,000	74,300,000	67,800,000
Minimum commitments on rail owned chassis and containers		0
Purchase contract units, containers \| Container	4,000
Cost of purchasing containers	$ 40,000,000
Transportation Costs [Member]
Lease and Rental Expense [Line Items]
Rental expense		$ 3,600,000	$ 11,900,000	$ 13,100,000

Guarantees - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Guarantees [Abstract]
Expiration dates of guarantees	2020
Potential maximum exposure under these lease guarantees	$ 1,400	$ 10,300
Liability representing fair value for estimated defaults of guarantees, based on discounted cash-flow analysis	$ 9	$ 100

Stock-Based Compensation Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2007	Dec. 31, 2003	Dec. 31, 2002	Dec. 31, 1999	Dec. 31, 1997	Dec. 31, 1996
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted since 2003		0
Stock options outstanding		0
Shares available for future grant		995,093
Compensation expense related to share-based compensation plans		$ 8,479	$ 7,833	$ 8,258
Compensation expense related to share-based compensation plans, net of tax		5,200	5,000	5,200
Total intrinsic value of options exercised		$ 0	0	0
Unrecognized compensation cost weighted average period recognized (years)		2 years 11 months 23 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total fair value of restricted shares vested		$ 7,500	$ 8,700	$ 9,400
Unrecognized compensation cost related to non-vested share-based compensation		$ 20,800
Restricted stock grants		420,368	338,531	293,910
Restricted stock grants, Weighted average grant date fair value		$ 33.46	$ 37.60	$ 39.66
Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants, Weighted average grant date fair value	$ 43.75
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		3 years
Minimum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		3 years	3 years	3 years
Minimum [Member] \| Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		5 years
Maximum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		5 years	5 years	5 years
Maximum [Member] \| Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	5 years
1996 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved under long-term incentive plan										1,800,000
1997 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved under long-term incentive plan									600,000
1999 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved under long-term incentive plan								2,400,000
Two Thousand Two Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved under long-term incentive plan							2,400,000
Stock reserved under long-term incentive plan, number of additional shares distributed					1,000,000	2,000,000
Employees [Member] \| Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	324,797
Outside Directors [Member] \| Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	27,500

Stock-Based Compensation Plans - Schedule of Non-Vested Restricted Stock Activity (Detail) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value Non-vested, Beginning balance	$ 37.02
Weighted average grant date fair value, Granted	33.46	$ 37.60	$ 39.66
Weighted average grant date fair value, Vested	36.34
Weighted average grant date fair value, Forfeited	35.75
Weighted average grant date fair value Non-vested, Ending balance	$ 35.48	$ 37.02
Shares Non-vested, Beginning balance	696,097
Shares, Granted	420,368	338,531	293,910
Shares, Vested	(219,951)
Shares, Forfeited	(115,574)
Shares Non-vested, Ending balance	780,940	696,097

Stock-Based Compensation Plans - Restricted Stock Granted (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	5 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	420,368	338,531	293,910
Restricted stock grants, Weighted average grant date fair value	$ 33.46	$ 37.60	$ 39.66
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	3 years	3 years	3 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	5 years	5 years	5 years
Restricted Stock [Member] \| Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	394,243	316,531	273,910
Restricted Stock [Member] \| Outside Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	26,125	22,000	20,000

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Expenses related to employer contributions	$ 2.4	$ 1.9	$ 1.9
Expenses related to deferred compensation plan	0.3	0.3	$ 0.3
Deferred compensation liability	$ 21.1	$ 21.3
Nonqualified Deferred Compensation Plan [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percent match by employer on the first 6% of employee compensation	50.00%
Maximum percent of compensation employer will match	3.00%

Legal Matters - Additional Information (Detail) - Robles Lawsuits [Member]		1 Months Ended	9 Months Ended
	Aug. 05, 2015 Plaintiff Employee	May 31, 2015 Plaintiff	Sep. 30, 2016
Loss Contingencies [Line Items]
Percentage of California drivers who accepted settlement offers			93.00%
Number of plaintiffs		2
Number of plaintiffs against Hub Group Trucking	63
Number of employees filed lawsuit \| Employee	5
Number of claims accepted settlement offers	58

Stock Buy Back Plans - Additional Information (Detail) - USD ($)	1 Months Ended							12 Months Ended
	Aug. 31, 2016	Jul. 31, 2016	Jun. 30, 2016	May 31, 2016	Apr. 30, 2016	Mar. 31, 2016	Feb. 28, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Feb. 02, 2016
Equity Class Of Treasury Stock [Line Items]
Purchase of treasury shares (in shares)	299,931	66,422	330,265	307,798	454,729	269,099	943,983	2,672,227
Purchase of treasury shares								$ 100,000,000	$ 28,823,000	$ 18,024,000
Class A Common Stock [Member]
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount											$ 100,000,000
Purchase of treasury shares (in shares)								2,672,227
Class A Common Stock [Member] \| Employee Restricted Stock Plan [Member]
Equity Class Of Treasury Stock [Line Items]
Stock tendered for payments of withholding taxes (in shares)								73,546	77,732
Purchase of treasury shares								$ 2,500,000	$ 2,900,000

Stock Buy Back Plans - Number of Shares Purchased and Maximum Value of Shares That yet be Purchased Under Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended							12 Months Ended
	Aug. 31, 2016	Jul. 31, 2016	Jun. 30, 2016	May 31, 2016	Apr. 30, 2016	Mar. 31, 2016	Feb. 28, 2016	Dec. 31, 2016	Jan. 31, 2016
Equity [Abstract]
Total Number of Shares Purchased	299,931	66,422	330,265	307,798	454,729	269,099	943,983	2,672,227
Average Price Paid Per Share	$ 40.92	$ 41.03	$ 39.96	$ 38.34	$ 38.78	$ 38.27	$ 33.97	$ 37.42
Total Number of Shares Purchased as Part of Publicly Announced Plan	299,931	66,422	330,265	307,798	454,729	269,099	943,983	2,672,227
Maximum Value of Shares that May Yet Be Purchased Under the Plan		$ 12,275	$ 15,000	$ 28,199	$ 40,000	$ 57,632	$ 67,932		$ 100,000

Selected Quarterly Financial Data (Unaudited) - Summary of Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 978,560	$ 932,814	$ 855,557	$ 805,859	$ 890,272	$ 899,869	$ 899,513	$ 835,941	$ 3,572,790	$ 3,525,595	$ 3,571,126
Gross margin	120,454	111,454	114,490	108,387	116,774	105,064	101,729	89,128	454,785	412,695	370,435
Operating income	30,839	29,855	34,297	28,843	35,341	33,418	29,476	18,795	123,834	117,030	83,877
Net income	$ 18,244	$ 17,924	$ 20,671	$ 17,965	$ 22,374	$ 19,832	$ 18,467	$ 10,276	$ 74,805	$ 70,949	$ 51,558
Basic earnings per share	$ 0.55	$ 0.54	$ 0.61	$ 0.51	$ 0.63	$ 0.55	$ 0.51	$ 0.28	$ 2.21	$ 1.98	$ 1.41
Diluted earnings per share	$ 0.55	$ 0.54	$ 0.61	$ 0.51	$ 0.63	$ 0.55	$ 0.51	$ 0.28	$ 2.20	$ 1.97	$ 1.40