Knight-Swift Transportation (KNX) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014	Oct. 31, 2014
		Class A Common Stock [Member]	Class B Common Stock [Member]
Entity Information [Line Items]	'	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Sep-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Trading Symbol	'SWFT	'	'
Entity Registrant Name	'SWIFT TRANSPORTATION Co	'	'
Entity Central Index Key	'0001492691	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	90,725,484	50,991,938

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Due from Affiliate, Current	'	'
Other current assets	'	'
Investment in subsidiaries	'	'
Current assets:	'	'
Cash and cash equivalents	70,296	59,178
Restricted cash	51,511	50,833
Restricted investments, held to maturity, amortized cost	25,091	25,814
Accounts receivable, net	454,188	418,436
Equipment sales receivable	878	368
Income tax refund receivable	5,340	23,704
Inventories and supplies	20,736	18,430
Assets held for sale	5,752	19,268
Prepaid taxes, licenses, insurance and other	58,647	63,958
Deferred income taxes	42,281	46,833
Current portion of notes receivable	9,144	7,210
Total current assets	743,864	734,032
Property and equipment, at cost:	'	'
Revenue and service equipment	1,983,177	1,942,423
Land	117,183	117,929
Facilities and improvements	267,484	248,724
Furniture and office equipment	62,739	61,396
Total property and equipment	2,430,583	2,370,472
Less: accumulated depreciation and amortization	946,640	922,665
Net property and equipment	1,483,943	1,447,807
Other assets	47,038	57,166
Intangible assets, net	304,136	316,747
Goodwill	253,256	253,256
Total assets	2,832,237	2,809,008
Current liabilities:	'	'
Accounts payable	165,734	118,014
Accrued liabilities	120,018	110,745
Current portion of claims accruals	82,809	75,469
Current portion of long-term debt and obligations under capital leases	76,138	75,056
Fair value of guarantees	0	366
Current portion of interest rate swaps	7,815	4,718
Total current liabilities	452,514	384,368
Revolving line of credit	82,000	17,000
Long-term debt and obligations under capital leases, less current portion	988,724	1,246,764
Claims accruals, less current portion	143,254	118,582
Fair value of interest rate swaps, less current portion	0	7,050
Deferred income taxes	448,240	484,200
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	315,000	264,000
Other liabilities	21	3,457
Total liabilities	2,429,753	2,525,421
Contingencies (note 13)	'	'
Stockholdersb equity:	'	'
Preferred stock, par value $0.01 per share; Authorized 10,000,000 shares; none issued	0	0
Additional paid-in capital	772,908	759,408
Accumulated deficit	-368,508	-471,169
Accumulated other comprehensive loss	-3,434	-6,162
Noncontrolling interest	102	102
Total stockholdersb equity	402,484	283,587
Total liabilities and stockholdersb equity	2,832,237	2,809,008
Due to Affiliate, Current	'	'
Other current liabilities	'	'
Self Insurance Reserve	'	'
Class A Common Stock [Member]	'	'
Stockholdersb equity:	'	'
Common stock, value	906	883
Class B Common Stock [Member]	'	'
Stockholdersb equity:	'	'
Common stock, value	$510	$525

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares Authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Class A Common Stock [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares Authorized	500,000,000	500,000,000
Common stock, shares issued	0	88,402,991
Common stock, shares outstanding	0	88,402,991
Class B Common Stock [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares Authorized	250,000,000	250,000,000
Common stock, shares issued	52,441,938	52,441,938
Common stock, shares outstanding	52,441,938	52,441,938

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Operating revenue	$1,074,880	$1,032,127	$3,159,224	$3,042,806
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	240,005	220,156	707,464	670,493
Operating supplies and expenses	88,459	85,204	253,361	236,267
Fuel	149,099	160,561	458,798	489,563
Purchased transportation	328,112	318,321	987,530	918,594
Rental expense	59,655	46,262	167,509	129,881
Insurance and claims	37,673	35,110	113,442	100,245
Depreciation and amortization of property and equipment	54,369	58,254	165,335	170,004
Asset Impairment Charges	2,308	0	2,308	0
Amortization of intangibles	4,204	4,204	12,611	12,611
Gain on disposal of property and equipment	-11,628	-5,619	-23,099	-13,610
Communication and utilities	7,321	6,679	22,207	19,145
Operating taxes and licenses	17,892	18,575	54,155	55,209
Total operating expenses	977,469	947,707	2,921,621	2,788,402
Operating income	97,411	84,420	237,603	254,404
Other (income) expenses:	'	'	'	'
Interest expense	20,372	24,595	65,050	75,719
Derivative interest expense	1,756	1,465	5,027	2,559
Interest income	-777	-604	-2,235	-1,741
Business Combination, Acquisition Related Costs	0	4,331	0	4,331
Loss on debt extinguishment	2,854	496	12,757	5,540
Gain on sale of real property	0	798	0	6,876
Other	-842	-1,174	-2,416	-3,058
Total other (income) expenses, net	23,363	28,311	78,183	76,474
Income before income taxes	74,048	56,109	159,420	177,930
Income tax expense (benefit)	23,890	26,156	56,759	67,806
Net income	$50,158	$29,953	$102,661	$110,124
Basic earnings per share	$0.35	$0.21	$0.73	$0.79
Diluted earnings per share	$0.35	$0.21	$0.72	$0.78
Shares used in per share calculations	'	'	'	'
Basic	141,557	140,327	141,282	140,004
Diluted	143,322	142,315	143,338	141,942

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement Of Comprehensive Income [Abstract]	'	'	'	'
Net income	$50,158	$29,953	$102,661	$110,124
Accumulated losses on derivatives reclassified to derivative interest expense	1,642	1,106	4,438	2,065
Other comprehensive income before income taxes:	'	'	'	'
Change in fair value of interest rate swaps	0	0	0	-145
Other comprehensive income before income taxes	1,642	1,106	4,438	1,920
Income tax effect of items within other comprehensive income	-633	-326	-1,710	-544
Other comprehensive income, net of income taxes	1,009	780	2,728	1,376
Total comprehensive income	$51,167	$30,733	$105,389	$111,500

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Noncontrolling Interest [Member]
		Class A Common Stock [Member]	Class B Common Stock [Member]
Beginning balance at Dec. 31, 2013	$283,587,000	$883,000	$525,000	$759,408,000	($471,169,000)	($6,162,000)	$102,000
Beginning balance, shares at Dec. 31, 2013	'	88,402,991	52,441,938	'	'	'	'
Exercise of stock options	6,773,000	6,000	'	6,767,000	'	'	'
Conversion Of Class B Common Stock Into Class Common Stock	'	1,450,000	-1,450,000	'	'	'	'
Class B Stock Issued During Period Value Conversion Of Common Stock	'	15,000	-15,000	'	'	'	'
Income tax benefit from exercise of stock options	2,029,000	'	'	2,029,000	'	'	'
Exercise of stock options, shares	'	651,536	'	'	'	'	'
Grant of restricted Class A common stock	202,000	'	'	201,000	'	'	'
Grant of restricted Class A common stock, shares	'	98,866	'	'	'	'	'
Stock Issued During Period, Value, Restricted Stock Award, Gross	'	1,000	'	'	'	'	'
Shares issued under employee stock purchase plan	814,000	'	'	813,000	'	'	'
Shares issued under employee stock purchase plan, shares	'	35,622	'	'	'	'	'
Stock Issued During Period, Value, Employee Stock Purchase Plan	'	1,000	'	'	'	'	'
Net current-period other comprehensive income	2,728,000	'	'	'	'	2,728,000	'
Non-cash equity compensation	3,690,000	'	'	3,690,000	'	'	'
Net income	102,661,000	'	'	'	'	'	'
Ending balance at Sep. 30, 2014	$402,484,000	$906,000	$510,000	$772,908,000	($368,508,000)	($3,434,000)	$102,000
Ending balance, shares at Sep. 30, 2014	'	90,639,015	50,991,938	'	'	'	'

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$102,661	$110,124
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization of property, equipment and intangibles	177,946	182,615
Amortization of debt issuance costs, original issue discount, and losses on terminated swaps	7,794	5,107
Gain on disposal of property and equipment less write-off of totaled tractors	-21,784	-12,902
Gain on sale of real property	0	6,876
Asset Impairment Charges	2,308	0
Equity losses of investee	0	228
Deferred income taxes	-33,120	64,695
Provision for allowance for losses on accounts receivable	2,041	872
Loss on debt extinguishment	12,757	5,540
Non-cash equity compensation	3,892	3,465
Income effect of mark-to-market adjustment of interest rate swaps	-74	654
Interest on Central stockholders' loan receivable, pre-acquisition	0	-53
Increase (decrease) in cash resulting from changes in:	'	'
Accounts receivable	-37,793	-18,939
Inventories and supplies	-2,307	-629
Prepaid expenses and other current assets	23,711	-23,946
Other assets	6,014	6,976
Accounts payable, accrued and other liabilities	48,767	38,932
Net cash provided by operating activities	292,813	355,863
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	-678	1,302
Change in restricted investments	364	-1,900
Proceeds from sale of property and equipment	116,672	75,812
Capital expenditures	-211,113	-236,990
Payments received on notes receivable	3,759	2,775
Expenditures on assets held for sale	-2,900	-17,442
Payments received on assets held for sale	20,089	47,365
Payments received on equipment sale receivables	368	1,266
Payments to Acquire Businesses, Net of Cash Acquired	0	-147,822
Net cash used in investing activities	-73,439	-275,634
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-772,088	-199,490
Proceeds from long-term debt	450,000	26,268
Net borrowings on revolving line of credit	65,000	59,469
Borrowings under accounts receivable securitization	100,000	180,000
Repayment of accounts receivable securitization	-49,000	-124,000
Payment of deferred loan costs	11,784	2,183
Distribution to Central stockholders, pre-acquisition	0	-2,499
Issuance of Central stockholders' loan receivable, pre-acquisition	0	-30,000
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	7,587	10,422
Income tax benefit from exercise of stock options	2,029	-383
Net cash used in financing activities	-208,256	-82,396
Net increase (decrease) in cash and cash equivalents	11,118	-2,167
Cash and cash equivalents at beginning of period	59,178	53,596
Cash and cash equivalents at end of period	70,296	51,429
Cash paid during the period for:	'	'
Interest	59,809	67,833
Income taxes	59,501	20,602
Non-cash investing activities:	'	'
Equipment sales receivables	878	696
Equipment purchase accrual	40,379	39,369
Notes receivable from sale of assets	4,524	5,855
Non-cash financing activities:	'	'
Accrued deferred loan costs	280	0
Capital lease additions	64,351	85,094
Insurance premium note payable	37	3,324
non-cash deistribution to Central stockholders	0	22,315
Non-cash exercies of Centrals stock options in exchnge for loans receivables	0	3,415
cancelation of central refrigerated loan receivables	$0	$33,295

Basis_Of_Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis Of Presentation	'
	Basis of Presentation
	Swift Transportation Company is the holding company for Swift Transportation Co., LLC (a Delaware limited liability company) and its subsidiaries (collectively, “Swift Transportation Co.”), a truckload carrier headquartered in Phoenix, Arizona, and Interstate Equipment Leasing, LLC (“IEL”) (all the foregoing being, collectively, “Swift” or the “Company”).
	As of September 30, 2014, the Company operated a national terminal network and a tractor fleet of approximately 18,700 units comprised of 13,700 tractors driven by company drivers and 5,000 owner-operator tractors, a fleet of 60,300 trailers, and 8,900 intermodal containers. The Company’s four reportable operating segments are Truckload, Dedicated, Central Refrigerated and Intermodal. In the first quarter of 2014, the Company reorganized its reportable segments to reflect management’s revised reporting structure of its lines of business following the integration of Central Refrigerated. In association with the operational reorganization, the operations of Central Refrigerated's Trailer on Flat Car ("TOFC") business are reported within the Company's Intermodal segment and the operations of Central Refrigerated's logistics business, third-party leasing, and other services provided to owner-operators are reported in the Company's other non-reportable segment. All prior period historical results related to the above noted segment reorganization have been retrospectively recast.
	In management's opinion, the accompanying financial statements prepared in accordance with United States generally accepted accounting principles ("GAAP") include all adjustments necessary for the fair presentation of the periods presented. These interim financial statements should be read in conjunction with the Company’s annual financial statements for the year ended December 31, 2013.

New_Accounting_Standards

New Accounting Standards	9 Months Ended
	Sep. 30, 2014
Accounting Changes and Error Corrections [Abstract]	'
New Accounting Standards	'
	New Accounting Standard
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers, which established Accounting Standards Codification ("ASC") Topic 606. The new revenue recognition standard eliminates all industry-specific guidance and provides a five-step analysis of transactions to determine when and how revenue is recognized. The premise of the guidance is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The amendments in this ASU will be effective for the Company beginning January 1, 2017, and may be applied retrospectively to each period presented, or as a cumulative effect adjustment as of the date of adoption. Early adoption is not permitted. The Company is currently evaluating the accounting, transition and disclosure requirements of the standard and cannot currently estimate the financial statement impact of adoption.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The effective tax rate for the three months ended September 30, 2014 was 32.3%, which was 6.2 percentage points lower than expected primarily due to certain federal income tax credits realized as a discrete item in the third quarter of 2014. The effective tax rate for the nine months ended September 30, 2014 was 35.6%, which was 2.9 percentage points lower than expected primarily due to the federal income tax credits mentioned above. Excluding the impact of the discrete item in the third quarter of 2014, the effective tax rate for the nine months ended September 30, 2014 would have been 38.5%.
	The effective tax rate for the three months ended September 30, 2013 was 46.6%, which was 8.1 percentage points higher than expected primarily due to Central Refrigerated acquisition related costs and deferred taxes for Central Refrigerated's conversion to a C-Corporation, as well as fixed asset basis differences and state taxes, which were all discrete items in the third quarter of 2013. The effective tax rate for the nine months ended September 30, 2013 was 38.1%, which was 0.4 percentage points lower than expected primarily due to Central Refrigerated’s pre-affiliated earnings that were taxed as an S-corporation prior to Swift’s acquisition and offset by the acquisition related costs and deferred tax items mentioned above.
	The Company recognizes potential accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. Accrued interest and penalties as of September 30, 2014 were approximately $1.2 million. To the extent interest and penalties are not assessed with respect to uncertain tax positions, amounts accrued will be reduced and reflected as a reduction of the overall income tax provision. The Company does not anticipate a decrease of unrecognized tax benefits during the next twelve months.
	Certain of the Company’s subsidiaries are currently under examination by the Internal Revenue Service and various state jurisdictions for tax years ranging from 2008 through 2012. At the completion of these examinations, management does not expect any adjustments that would have a material impact on the Company’s effective tax rate. Tax years 2009 through 2013 remain subject to examination.

Investments

Investments	9 Months Ended
	Sep. 30, 2014
Schedule of Investments [Abstract]	'
Investments	'
	Investments
	The following table presents the cost or amortized cost, gross unrealized gains and temporary losses, and estimated fair value of the Company’s restricted investments as of September 30, 2014 and December 31, 2013 (in thousands):
		30-Sep-14
		Cost or		Gross Unrealized				Estimated
		Amortized		Gains		Temporary		Fair
		Cost				Losses		Value
	U.S. corporate securities	$	21,960	$	3	$	3	$	21,960
	Foreign corporate securities	1,506		—		2		1,504
	Negotiable certificates of deposit	1,625		—		1		1,624
	Total restricted investments	$	25,091	$	3	$	6	$	25,088
		December 31, 2013
		Cost or		Gross Unrealized				Estimated
		Amortized				Temporary		Fair
		Cost		Gains		Losses		Value
	U.S. corporate securities	$	20,197	$	2	$	7	$	20,192
	Foreign corporate securities	3,502		—		—		3,502
	Negotiable certificates of deposit	2,115		—		1		2,114
	Total restricted investments	$	25,814	$	2	$	8	$	25,808
	As of September 30, 2014, the contractual maturities of the restricted investments were one year or less. There were 13 securities and 15 securities that were in an unrealized loss position for less than twelve months as of September 30, 2014 and December 31, 2013, respectively.
	The Company periodically evaluates restricted investments for impairment. The assessment of whether impairments have occurred is based on management’s case-by-case evaluation of the underlying reasons for the decline in estimated fair value.
	The Company accounts for other-than-temporary impairments of debt securities using the provisions of ASC Topic 320, Investments – Debt and Equity Securities, related to the recognition of other-than-temporary impairments of debt securities. This guidance requires the Company to evaluate whether it intends to sell an impaired debt security or whether it is more likely than not that it will be required to sell an impaired debt security before recovery of the amortized cost basis. If either of these criteria is met, an impairment equal to the difference between the debt security’s amortized cost and its estimated fair value is recognized in earnings.
	For impaired debt securities that do not meet this criteria, the Company determines if an other-than-temporary credit loss exists with respect to the impaired security. If a credit loss exists, the credit loss component of the impairment (i.e., the difference between the security’s amortized cost and the present value of projected future cash flows expected to be collected) is recognized in earnings and the remaining portion of the impairment is recognized as a component of accumulated other comprehensive income ("AOCI"). The Company did not recognize any impairment losses for the three and nine months ended September 30, 2014 and 2013, respectively.

Intangible_Assets

Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Intangible Assets	'
	Intangible Assets
	Intangible assets as of September 30, 2014 and December 31, 2013 were as follows (in thousands):
		30-Sep-14			31-Dec-13
	Customer Relationships:
	Gross carrying value	$	275,324		$	275,324
	Accumulated amortization	(152,225		)	(139,614		)
	Trade Name:
	Gross carrying value	181,037			181,037
	Intangible assets, net	$	304,136		$	316,747
	For all periods ending on or after December 31, 2007, amortization of intangibles consists primarily of amortization of $261.2 million gross carrying value of definite-lived intangible assets recognized under purchase accounting in connection with Swift Transportation Co.’s 2007 going private transaction. Intangible assets acquired as a result of the 2007 going private transaction include a trade name, customer relationships, and owner-operator relationships. Amortization of the customer relationship acquired in the going private transaction is calculated on the 150% declining balance method over the estimated useful life of 15 years. The customer relationship contributed to the Company at May 9, 2007 is amortized using the straight-line method over 15 years. The trade name has an indefinite useful life and is not amortized, but rather is tested for impairment at least annually, unless events occur or circumstances change between annual tests that would more likely than not reduce the fair value.
	The following table presents amortization of intangibles for the three and nine months ended September 30, 2014 and 2013, related to intangible assets recognized in conjunction with the 2007 going private transaction and the previous intangible assets existing prior to the 2007 going private transaction (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Amortization of intangible assets related to 2007 going private transaction	$	3,912		$	3,912		$	11,736	$	11,736
	Amortization of intangible assets related to intangible assets existing prior to the 2007 going private transaction	292			292			875		875
	Amortization of intangibles	$	4,204		$	4,204		$	12,611	$	12,611

Assets_Held_For_Sale

Assets Held For Sale	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Assets Held For Sale	'
	Assets Held for Sale
	Assets held for sale as of September 30, 2014 and December 31, 2013 were as follows (in thousands):
		30-Sep-14		31-Dec-13
	Land and facilities	$	1,904	$	14,627
	Revenue equipment	3,848		4,641
	Assets held for sale	$	5,752	$	19,268
	As of September 30, 2014 and December 31, 2013, assets held for sale are carried at the lower of depreciated cost or estimated fair value less expected selling costs. The Company expects to sell these assets within the next twelve months.
	During the nine months ended September 30, 2014, the Company sold four operating properties classified as held for sale with a carrying value of $12.9 million. As a result, the Company recognized a pre-tax gain of $2.0 million in gain on disposal of real property and equipment in the Company’s consolidated statements of operations.

Debt_And_Financing_Transaction

Debt And Financing Transactions	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt And Financing Transactions	'
	Debt and Financing Transactions
	Other than the Company’s accounts receivable securitization, as discussed in Note 8, and its outstanding capital lease obligations as discussed in Note 9, the Company had long-term debt outstanding as of September 30, 2014 and December 31, 2013 as follows (in thousands):
		30-Sep-14		31-Dec-13
	Senior secured first lien term loan A tranche due June 2019	$	50,000	$	—
	Senior secured first lien term loan B tranche due June 2021, net of $956 OID as of September 30, 2014	397,044		—
	Senior secured first lien term loan B-1 tranche due December 2016	—		229,000
	Senior secured first lien term loan B-2 tranche due December 2017	—		410,000
	Senior secured second priority notes due November 15, 2018, net of $4,480 and $6,175 OID as of September 30, 2014 and December 31, 2013, respectively	423,596		493,825
	Other	8,319		17,480
	Total	878,959		1,150,305
	Less: current portion	26,833		11,387
	Long-term debt	$	852,126	$	1,138,918
	The credit facility and senior notes are secured by substantially all of the assets of the Company and are guaranteed by Swift Transportation Company, IEL, Central Refrigerated Transportation, Inc. and its subsidiaries, and Swift Transportation Company's domestic subsidiaries other than its captive insurance subsidiaries, driver training academy subsidiary, and its bankruptcy-remote special purpose subsidiary. Deferred loan costs, reported in Other assets in the Company's consolidated balance sheets, were $12.5 million and $8.9 million, as of September 30, 2014 and December 31, 2013, respectively.
	Senior Secured Credit Facility
	On June 9, 2014, the Company entered into a Third Amended and Restated Credit Agreement (the “2014 Agreement”) replacing its previous Second Amended and Restated Credit Agreement dated March 7, 2013 (the “2013 Agreement”). The 2014 Agreement includes: (i) a $450.0 million revolving credit facility with a maturity date of June 2019, (ii) a $500.0 million delayed draw term loan A with a maturity date of June 2019, and (iii) a $400.0 million term loan B with a maturity date of June 2021.
	The term loan A requires quarterly minimum principal payments of $5.6 million commencing March 31, 2015 through December 31, 2016 and increasing to $11.3 million beginning March 31, 2017 through March 31, 2019, with the remaining outstanding principal balance on June 9, 2019. The term loan B requires quarterly principal payments of $1.0 million that commenced June 30, 2014 with the remaining outstanding principal balance due on June 9, 2021.
	Pursuant to the 2014 Agreement, the interest rate applicable to the term loan A equals the London InterBank Offered Rate ("LIBOR") plus a 2.00% margin with no LIBOR floor. Commencing the quarter ended September 30, 2014, the applicable LIBOR margin for the term loan A will range from 1.50% to 2.25% as determined by the Company’s consolidated leverage ratio as defined in the 2014 Agreement. The term loan B under the 2014 Agreement accrues interest at LIBOR plus a 3.00% margin with a 0.75% LIBOR floor. After December 31, 2014, the applicable LIBOR margin for the term loan B will range from 2.75% to 3.00% as determined by the Company’s consolidated leverage ratio. As of September 30, 2014, interest accrues at 2.15% and 3.75% on the Company’s first lien term loan A and B tranches, respectively.
	In addition to the pricing attributes described above, the 2014 Agreement increased the availability pursuant to the accordion feature from $350.0 million under the 2013 Agreement to $500.0 million, subject to the satisfaction of certain conditions and the participation of lenders.
	As of September 30, 2014, the Company had $82.0 million of outstanding borrowings under the $450.0 million revolving line of credit pursuant to the 2014 Agreement. Additionally, the Company had outstanding letters of credit under this facility primarily for workers’ compensation and self-insurance liability purposes totaling $106.8 million, leaving $261.2 million available under the revolving line of credit. Under the 2014 Agreement, the interest rate spread on the revolving credit facility ranges from 1.50% to 2.25% for LIBOR-based borrowings and letters of credit and 0.50% to 1.25% for Base Rate borrowings, depending on the Company’s consolidated leverage ratio. Additionally, the commitment fee for the unused portion of the revolving credit facility ranges from 0.25% to 0.35%, depending on the Company’s consolidated leverage ratio. As of September 30, 2014, interest accrues at 2.15%, 2.00% and 0.30% on the outstanding borrowings, letters of credit and unused portion, respectively, on the revolving line of credit.
	The 2014 Agreement, specifically the revolving credit facility and the term loan A tranche, contain certain financial covenants with respect to a maximum leverage ratio and a minimum consolidated interest coverage ratio. The 2014 Agreement removed any financial covenants related to the term loan B tranche. Further, the 2014 Agreement removed the maximum capital expenditures covenant and also provides for improved flexibility regarding the use of proceeds from asset sales, payment of dividends, stock buybacks, and equipment financing. In addition to the financial covenants, the 2014 Agreement includes customary events of default, including a change in control default and certain affirmative and negative covenants, including, but not limited to, restrictions, subject to certain exceptions, on incremental indebtedness, asset sales, certain restricted payments (including dividends), certain incremental investments or advances, transactions with affiliates, engaging in additional business activities, and prepayments of certain other indebtedness.
	The 2014 Agreement replaced the Company’s previous first lien term loan B-1 tranche maturing December 2016 and B-2 tranche maturing December 2017 under the 2013 Agreement with then-outstanding principal balances at closing of $229.0 million and $371.0 million, respectively. The previous first lien term loan accrued interest at LIBOR plus a 2.75% margin for the B-1 tranche, and LIBOR plus a 3.00% margin with a 1.00% LIBOR floor, for the B-2 tranche. Additionally, the 2014 Agreement replaced the Company’s previous revolving credit facility maturing September 2016. The interest rate spread on the previous revolving credit facility ranged from 3.00% to 3.25% for LIBOR-based borrowings and letters of credit and 2.00% to 2.25% for Base Rate borrowings, depending on the Company’s consolidated leverage ratio. Additionally, the commitment fee for the unused portion of the previous revolving credit facility ranged from 0.25% to 0.50%, depending upon the Company’s consolidated leverage ratio. The replacement of the 2013 Agreement resulted in a loss on debt extinguishment of $5.2 million for the nine months ended September 30, 2014, representing the write-off of deferred financing fees associated with the 2013 Agreement.
	Senior Secured Second Priority Notes
	In December 2010, Swift Services Holdings, Inc., a wholly owned subsidiary, completed a private placement of senior secured second priority notes totaling $500.0 million face value which mature in November 2018 and bear interest at 10.00% (the “senior notes”). The Company received proceeds of $490.0 million, net of a $10.0 million original issue discount. In the first nine months of 2014, the Company used cash on hand to repurchase $71.9 million in principal of these notes, as transacted on the open market, and averaging 109.05% of the face value. The Company paid total proceeds of $80.5 million, which included the principal amount, the premium and the accrued interest. The premium and the related write-off of the unamortized original issue discount resulted in a loss on debt extinguishment of $2.9 million and $7.6 million for the three and nine months ended September 30, 2014, respectively. Subsequent to September 30, 2014, the Company issued a notice of redemption to the holders of the remaining senior secured second priority notes notifying them of its intention to redeem the remaining senior secured second priority notes in full on November 15, 2014, at a price of 105.00% of face value, plus accrued and unpaid interest, pursuant to the terms of the indenture governing the notes. The Company anticipates utilizing the remainder of the delayed draw first lien Term loan A under the 2014 Agreement to fund the majority of the redemption costs.

Accounts_Receivable_Securitiza

Accounts Receivable Securitization	9 Months Ended
	Sep. 30, 2014
Transfers and Servicing [Abstract]	'
Accounts Receivable Securitization	'
	Accounts Receivable Securitization
	In June 2013, Swift Receivables Company II, LLC, a Delaware limited liability company (“SRCII”), a wholly-owned bankruptcy-remote special purpose subsidiary, entered into an Amended and Restated Receivables Sale Agreement (the “2013 RSA”) with unrelated financial entities (the “Purchasers”) to sell, on a revolving basis, undivided interests in the Company’s accounts receivable. Pursuant to the 2013 RSA, the Company’s receivable originator subsidiaries will sell all of their eligible accounts receivable to SRCII, which in turn sells a variable percentage ownership interest in its accounts receivable to the Purchasers. The 2013 RSA provides for up to $375.0 million in borrowing capacity, increasing from $325.0 million after the Company exercised the accordion feature on September 26, 2014. The 2013 RSA terminates on July 13, 2016 and is subject to customary fees and contains various customary affirmative and negative covenants, representations and warranties, and default and termination provisions. Outstanding balances under the 2013 RSA accrue program fees, generally at commercial paper rates plus 95 basis points. Unused capacity of the 2013 RSA is subject to an unused commitment fee of 35 basis points. Pursuant to the 2013 RSA, the Company's collections on the underlying receivables are not available to satisfy claims of the Company and its subsidiaries, and are held for the benefit of SRCII and the Purchasers. The facility qualifies for treatment as a secured borrowing under ASC Topic 860, Transfers and Servicing, and as such, outstanding amounts are carried on the Company’s consolidated balance sheets as a liability.
	For the three and nine months ended September 30, 2014, the Company incurred program fees of $0.9 million and $2.5 million, respectively, associated with the 2013 RSA which were recorded in interest expense in the Company's consolidated statements of income. For the three and nine months ended September 30, 2013, the Company incurred program fees of $0.8 million and $2.3 million, respectively, primarily associated with the prior accounts receivable facility. As of September 30, 2014, the outstanding borrowing under the 2013 RSA was $315.0 million against a total available borrowing base of $336.8 million, leaving $21.8 million available. As of December 31, 2013, the outstanding borrowing under the 2013 RSA was $264.0 million against a total available borrowing base of $300.8 million.

Capital_Leases

Capital Leases	9 Months Ended
	Sep. 30, 2014
Leases [Abstract]	'
Capital Leases	'
	Capital Leases
	The Company leases certain revenue equipment under capital leases. The Company’s capital leases are typically structured with balloon payments at the end of the lease term equal to the residual value the Company is contracted to receive from certain equipment manufacturers upon sale or trade back to the manufacturers. The Company is obligated to pay the balloon payments at the end of the leased term whether or not it receives the proceeds of the contracted residual values from the respective manufacturers. Certain leases contain renewal or fixed price purchase options. As of September 30, 2014 and December 31, 2013, the present value of obligations under capital leases totaled $185.9 million and $171.5 million, of which the current portion was $49.3 million and $63.7 million, respectively. The leases are collateralized by revenue equipment with a cost of $298.3 million and accumulated amortization of $71.8 million as of September 30, 2014. The amortization of the equipment under capital leases is included in depreciation and amortization expense in the Company’s consolidated statements of income.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Financial Instruments	'
	Derivative Financial Instruments
	In April 2011, as contemplated by the then existing credit facility, the Company entered into two forward-starting interest rate swap agreements with a notional amount of $350.0 million. These interest rate swaps were effective in January 2013 and have a maturity date of July 2015. On April 27, 2011 (“designation date”), the Company designated and qualified these interest rate swaps as cash flow hedges. Subsequent to the designation date, the effective portion of the changes in estimated fair value of the swaps was recorded in accumulated other comprehensive income ("AOCI"), and thereafter reclassified to derivative interest expense in the periods that the interest on the hedged debt affected earnings. The Company began accruing for hedged interest in January 2013. Refer to Note 11 below for further discussion of the Company’s estimated fair value methodology.
	On March 7, 2013, the Company entered into the 2013 Agreement, as discussed in Note 7. Due to the incorporation of a new interest rate floor provision in the 2013 Agreement, the Company concluded, as of February 28, 2013, that the outstanding interest rate swaps were no longer highly effective in achieving offsetting changes in cash flows related to the hedged interest payments. As a result, the Company de-designated the hedges as of February 28, 2013 (“de-designation date”), at which time the effective portion of the change in fair value of interest rate swaps (previously recorded in AOCI) was, and will continue to be, amortized as derivative interest expense over the period of the originally designated hedged interest payments through July 2015. Following the de-designation date, changes in fair value of the interest rate swaps are immediately recognized in the consolidated statements of income as derivative interest expense.
	The following table presents the pre-tax changes in fair value of derivatives designated as cash flow hedges, included in AOCI and earnings (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Amount of derivatives income recognized in AOCI (effective portion)	$	—		$	—		$	—		$	145
	Amount of loss reclassified from AOCI into income as “Derivative interest expense” (effective portion)	$	(1,642	)	$	(1,106	)	$	(4,438	)	$	(2,065	)
	The following table presents information about pre-tax losses recognized in earnings on the Company’s interest rate derivative contracts that were de-designated as hedging instruments under ASC Topic 815 on February 28, 2013 (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Amount of loss recognized in income as “Derivative interest expense”	$	(114	)	$	(359	)	$	(589	)	$	(494	)
	As of September 30, 2014, $5.8 million of pre-tax deferred losses on derivatives in AOCI is expected to be reclassified to earnings within the next twelve months.

Fair_Value_Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurement	'
	Fair Value Measurement
	ASC Topic 820, Fair Value Measurements and Disclosures, requires that the Company disclose estimated fair values for its financial instruments. The estimated fair value of a financial instrument is the amount that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants at the measurement date in the principal, or most advantageous market, for the asset or liability. Fair value estimates are made at a specific point in time and are based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Changes in assumptions could significantly affect these estimates. As the fair value is estimated at September 30, 2014 and December 31, 2013, the amounts that will actually be realized or paid at settlement or maturity of the instruments in the future could be significantly different.
	The tables below exclude certain financial instruments, as follows: cash and cash equivalents, restricted cash, accounts receivable, net, income tax refund receivable and accounts payable. The estimated fair values of these financial instruments approximate carrying value as they are short-term in nature. Additionally, for notes payable under revolving lines of credit, fair value approximates the carrying value due to the variable interest rate. For capital leases, the carrying value approximates the fair value. The table below also excludes financial instruments reported at estimated fair value on a recurring basis. See below, “Recurring Fair Value Measurements”. All remaining balance sheet amounts excluded from the table below are not considered financial instruments subject to this disclosure.
	The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments as of September 30, 2014 and December 31, 2013 (in thousands):
			30-Sep-14				31-Dec-13
			Carrying		Estimated		Carrying		Estimated
			Value		Fair Value		Value		Fair Value
	Financial Assets:
	Restricted investments		$	25,091	$	25,088	$	25,814	$	25,808
	Financial Liabilities:
	Senior secured first lien term loan A tranche		50,000		50,000		—		—
	Senior secured first lien term loan B tranche		397,044		395,309		—		—
	Senior secured first lien term loan B-1 tranche (2013 Agreement)		—		—		229,000		230,031
	Senior secured first lien term loan B-2 tranche (2013 Agreement)		—		—		410,000		412,358
	Senior secured second priority notes		423,596		445,305		493,825		549,059
	Securitization of accounts receivable		315,000		315,000		264,000		264,000
	The carrying amounts shown in the table (other than restricted investments and securitization of accounts receivable) are included in the consolidated balance sheets in long-term debt and obligations under capital leases. The estimated fair values of the financial instruments shown in the above table as of September 30, 2014 and December 31, 2013, represent management’s best estimates of the amounts that would be received to sell those assets or that would be paid to transfer those liabilities in an orderly transaction between market participants at that date. The estimated fair value measurements maximize the use of observable inputs. However, in situations where there is little, if any, market activity for the asset or liability at the measurement date, the estimated fair value measurement reflects the Company’s own judgments about the assumptions that market participants would use in pricing the asset or liability. These judgments are developed by the Company based on the best information available under the circumstances.
	The following summary presents a description of the methods and assumptions used to estimate the fair value of each class of financial instrument.
	Restricted Investments
	The estimated fair value of the Company’s restricted investments is based on quoted prices in active markets that are readily and regularly obtainable.
	First Lien Term Loans and Senior Secured Second Priority Notes
	The estimated fair values of the first lien term loans and senior secured second priority notes were determined by bid prices in trades between qualified institutional buyers.
	Securitization of Accounts Receivable
	The Company’s securitization of accounts receivable consists of borrowings outstanding pursuant to the Company’s 2013 RSA as of September 30, 2014 and December 31, 2013, respectively, as discussed in Note 8. Its fair value is estimated by discounting future cash flows using a discount rate commensurate with the uncertainty involved.
	Fair Value Hierarchy
	ASC Topic 820 establishes a framework for measuring fair value in accordance with GAAP and expands financial statement disclosure requirements for fair value measurements. ASC Topic 820 further specifies a hierarchy of valuation techniques, which is based on whether the inputs into the valuation techniques are observable or unobservable. The hierarchy is as follows:
	•	Level 1 — Valuation techniques in which all significant inputs are quoted prices from active markets for assets or liabilities that are identical to the assets or liabilities being measured.
	•	Level 2 — Valuation techniques in which significant inputs include quoted prices from active markets for assets or liabilities that are similar to the assets or liabilities being measured and/or quoted prices from markets that are not active for assets or liabilities that are identical or similar to the assets or liabilities being measured. Level 2 also includes model-derived valuation techniques in which all significant inputs and significant value drivers are observable in active markets.
	•	Level 3 — Valuation techniques in which one or more significant inputs or significant value drivers are unobservable. Unobservable inputs are valuation technique inputs that reflect the Company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.
	When available, the Company uses quoted market prices to determine the estimated fair value of an asset or liability. If quoted market prices are not available, the Company measures fair value using valuation techniques that use, when possible, current market-based or independently-sourced market parameters, such as interest rates and currency rates. The level in the fair value hierarchy within which a fair measurement in its entirety falls is based on the lowest level input that is significant to the estimated fair value measurement in its entirety.
	As of September 30, 2014, interest rate swaps represent the only major category of assets or liabilities included in the Company's consolidated balance sheets that are measured by estimating fair value on a recurring basis. The Company’s interest rate swaps are not actively traded but are valued using valuation models and credit valuation adjustments, both of which use significant inputs that are observable in active markets over the terms of the instruments the Company holds, and accordingly, the Company classified these valuation techniques as Level 2 in the hierarchy. Interest rate yield curves and credit spreads derived from trading levels of the Company’s first lien term loan are the significant inputs into these valuation models. These inputs are observable in active markets over the terms of the instruments the Company holds. The Company considers the effect of its own credit standing and that of its counterparties in the valuations of its derivative financial instruments.
	Recurring Fair Value Measurements
	As of September 30, 2014 and December 31, 2013, no assets of the Company were measured at estimated fair value on a recurring basis. As of September 30, 2014 and December 31, 2013, information about inputs into the estimated fair value measurements of each major category of the Company’s liabilities that were measured at estimated fair value on a recurring basis in periods subsequent to their initial recognition was as follows (in thousands):
					Fair Value Measurements at Reporting Date Using
	Description		Total		Quoted Prices in		Significant		Significant
			Estimated		Active  Markets for		Other		Unobservable
			Fair Value		Identical Assets or		Observable		Inputs
					Liabilities		Inputs		(Level 3)
					(Level 1)		(Level 2)
	As of September 30, 2014
	Interest rate swaps		$	7,815	$	—	$	7,815	$	—
	As of December 31, 2013
	Interest rate swaps		$	11,768	$	—	$	11,768	$	—
	Nonrecurring Fair Value Measurements
	As of September 30, 2014 and December 31, 2013, no assets or liabilities of the Company were measured at estimated fair value on a nonrecurring basis.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings per Share
	The computation of basic and diluted earnings per share is as follows:
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
			(In thousands, except
			per share amounts)
	Net income		$	50,158	$	29,953	$	102,661	$	110,124
	Basic:
	Weighted average common shares outstanding		141,557		140,327		141,282		140,004
	Diluted:
	Dilutive effect of stock options		1,765		1,988		2,056		1,938
	Total weighted average diluted shares outstanding		143,322		142,315		143,338		141,942
	Anti-dilutive shares excluded from the diluted earnings per share calculation (1)		168		—		171		181
	Earnings per share:
	Basic earnings per share		$	0.35	$	0.21	$	0.73	$	0.79
	Diluted earnings per share		$	0.35	$	0.21	$	0.72	$	0.78
	-1	Impact of outstanding options to purchase shares of the Company’s Class A common stock were anti-dilutive because the options' exercise prices were greater than the average market price of the common shares and were excluded from the calculation of diluted earnings per share.
	As of September 30, 2014 and 2013, there were 4,747,586 and 5,451,280 options outstanding, respectively.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies	'
	Contingencies
	The Company is involved in certain claims and pending litigation primarily arising in the normal course of business. The majority of these claims relate to workers' compensation, auto collision and liability, and physical damage and cargo damage. The Company expenses legal fees as incurred and accrues for the uninsured portion of contingent losses from these and other pending claims when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. Based on the knowledge of the facts and, in certain cases, advice of outside counsel, management believes the resolution of claims and pending litigation, taking into account existing reserves, will not have a material adverse effect on the Company. Moreover, the results of complex legal proceedings are difficult to predict and the Company’s view of these matters may change in the future as the litigation and events related thereto unfold.
	For certain cases described below, management is unable to provide a meaningful estimate of the possible loss or range of loss because, among other reasons, (i) the proceedings are in various stages; (ii) damages have not been sought; (iii) damages are unsupported and/or exaggerated; (iv) there is uncertainty as to the outcome of pending appeals; and/or (v) there are significant factual issues to be resolved. For these cases, however, management does not believe, based on currently available information, that the outcomes of these proceedings will have a material adverse effect on our financial condition, though the outcomes could be material to our operating results for any particular period, depending, in part, upon the operating results for such period.
	Arizona Owner-operator Class Action Litigation
	On January 30, 2004, a class action lawsuit was filed by Leonel Garza on behalf of himself and all similarly situated persons against Swift Transportation: Garza v. Swift Transportation Co., Inc., Case No. CV7-472 ("the Garza Complaint"). The putative class originally involved certain owner-operators who contracted with the Company under a 2001 Contractor Agreement that was in place for one year. The putative class is alleging that the Company should have reimbursed owner-operators for actual miles driven rather than the contracted and industry standard remuneration based upon dispatched miles. The trial court denied plaintiff’s petition for class certification, the plaintiff appealed and on August 6, 2008, the Arizona Court of Appeals issued an unpublished Memorandum Decision reversing the trial court’s denial of class certification and remanding the case back to the trial court. On November 14, 2008, the Company filed a petition for review to the Arizona Supreme Court regarding the issue of class certification as a consequence of the denial of the Motion for Reconsideration by the Court of Appeals. On March 17, 2009, the Arizona Supreme Court granted the Company’s petition for review, and on July 31, 2009, the Arizona Supreme Court vacated the decision of the Court of Appeals opining that the Court of Appeals lacked automatic appellate jurisdiction to reverse the trial court’s original denial of class certification and remanded the matter back to the trial court for further evaluation and determination. Thereafter, the plaintiff renewed the motion for class certification and expanded it to include all persons who were employed by Swift as employee drivers or who contracted with Swift as owner-operators on or after January 30, 1998, in each case who were compensated by reference to miles driven. On November 4, 2010, the Maricopa County trial court entered an order certifying a class of owner-operators and expanding the class to include employees. Upon certification, the Company filed a motion to compel arbitration, as well as filing numerous motions in the trial court urging dismissal on several other grounds including, but not limited to the lack of an employee as a class representative, and because the named owner-operator class representative only contracted with the Company for a three-month period under a one-year contract that no longer exists. In addition to these trial court motions, the Company also filed a petition for special action with the Arizona Court of Appeals arguing that the trial court erred in certifying the class because the trial court relied upon the Court of Appeals ruling that was previously overturned by the Arizona Supreme Court. On April 7, 2011, the Arizona Court of Appeals declined jurisdiction to hear this petition for special action and the Company filed a petition for review to the Arizona Supreme Court. On August 31, 2011, the Arizona Supreme Court declined to review the decision of the Arizona Court of Appeals. In April 2012, the court issued the following rulings with respect to certain motions filed by Swift: (1) denied Swift’s motion to compel arbitration; (2) denied Swift’s request to decertify the class; (3) granted Swift’s motion that there is no breach of contract; and (4) granted Swift’s motion to limit class size based on statute of limitations. The Company intends to continue to pursue all available appellate relief supported by the record, which the Company believes demonstrates that the class is improperly certified and, further, that the claims raised have no merit. The Company retains all of its defenses against liability and damages. The final disposition of this case and the impact of such final disposition cannot be determined at this time.
	Ninth Circuit Owner-operator Misclassification Class Action Litigation
	On December 22, 2009, a class action lawsuit was filed against Swift Transportation and IEL: Virginia VanDusen, John Doe 1 and Joseph Sheer individually and on behalf of all other similarly situated persons v. Swift Transportation Co., Inc., Interstate Equipment Leasing, Inc., Jerry Moyes, and Chad Killebrew, Case No. 9-CIV-10376 filed in the United States District Court for the Southern District of New York ("the Sheer Complaint"). The putative class involves owner-operators alleging that Swift Transportation misclassified owner-operators as independent contractors in violation of the federal Fair Labor Standards Act ("FLSA"), and various New York and California state laws and that such owner-operators should be considered employees. The lawsuit also raises certain related issues with respect to the lease agreements that certain owner-operators have entered into with IEL. At present, in addition to the named plaintiffs, approximately 200 other current or former owner-operators have joined this lawsuit. Upon Swift’s motion, the matter has been transferred from the United States District Court for the Southern District of New York to the United States District Court in Arizona. On May 10, 2010, the plaintiffs filed a motion to conditionally certify an FLSA collective action and authorize notice to the potential class members. On September 23, 2010, plaintiffs filed a motion for a preliminary injunction seeking to enjoin Swift and IEL from collecting payments from plaintiffs who are in default under their lease agreements and related relief. On September 30, 2010, the District Court granted Swift’s motion to compel arbitration and ordered that the class action be stayed pending the outcome of arbitration. The District Court further denied plaintiff’s motion for preliminary injunction and motion for conditional class certification. The District Court also denied plaintiff’s request to arbitrate the matter as a class.
	The plaintiff filed a petition for a writ of mandamus to the Ninth Circuit Court of Appeals asking that the District Court’s September 30, 2010 order be vacated. On July 27, 2011, the Ninth Circuit Court of Appeals denied the plaintiff’s petition for writ of mandamus and thereafter the District Court denied plaintiff’s motion for reconsideration and certified its September 30, 2010 order. The plaintiffs filed an interlocutory appeal to the Ninth Circuit Court of Appeals to overturn the District Court’s September 30, 2010 order to compel arbitration alleging that the agreement to arbitrate is exempt from arbitration under Section 1 of the Federal Arbitration Act (“FAA”) because the class of plaintiffs allegedly consists of employees exempt from arbitration agreements. On November 6, 2013, the Ninth Circuit Court of Appeals reversed and remanded, stating its prior published decision “expressly held that a district court must determine whether an agreement for arbitration is exempt from arbitration under Section 1 of the FAA as a threshold matter". As a consequence of this determination by the ninth Circuit Court of Appeals being different from a decision of the Eighth Circuit Court of Appeals on a similar issue, on February 4, 2014, the Company filed a petition for writ of certiorari to the U.S. Supreme Court to address whether the district court or arbitrator should determine whether the contract is an employment contract exempt from Section 1 of the Federal Arbitration Act. On June 16, 2014, the U.S. Supreme Court denied the Company’s petition for writ of certiorari. The Company intends to vigorously defend against any proceedings. The final disposition of this case and the impact of such final disposition cannot be determined at this time.
	California Wage, Meal and Rest Employee Class Actions
	On March 22, 2010, a class action lawsuit was filed by John Burnell, individually and on behalf of all other similarly situated persons against Swift Transportation: John Burnell and all others similarly situated v. Swift Transportation Co., Inc., Case No. CIVDS 1004377 filed in the Superior Court of the State of California, for the County of San Bernardino ("the Burnell Complaint"). On September 3, 2010, upon motion by Swift, the matter was removed to the United States District Court for the Central District of California, Case No. EDCV10-809-VAP. The putative class includes drivers who worked for Swift during the four years preceding the date of filing alleging that Swift failed to pay the California minimum wage, failed to provide proper meal and rest periods and failed to timely pay wages upon separation from employment. The Burnell Complaint was subject to a stay of proceedings pending determination of similar issues in a case unrelated to Swift, Brinker v. Hohnbaum, which was then pending before the California Supreme Court. A ruling was entered in the Brinker matter and in August 2012 the stay in the Burnell Complaint was lifted. On April 9, 2013 the Company filed a motion for judgment on the pleadings requesting dismissal of plaintiff's claims related to alleged meal and rest break violations under the California Labor Code alleging that such claims are preempted by the Federal Aviation Administration Authorization Act. On May 29, 2013, the U.S. District Court for the Central District of California granted the Company's motion for judgment on the pleadings and dismissed plaintiff's claims that are based on alleged violations of meal and rest periods set forth in the California Labor Code.
	On April 5, 2012, the Company was served with an additional class action complaint alleging facts similar to those as set forth in the Burnell Complaint. This new class action is James R. Rudsell, on behalf of himself and all others similarly situated v. Swift Transportation Co. of Arizona, LLC and Swift Transportation Company, Case No. CIVDS 1200255, in the Superior Court of California for the County of San Bernardino ("the Rudsell Complaint"). The Rudsell Complaint has been stayed pending a resolution in the Burnell Complaint. Any claims related to orientation pay in the Rudsell Complaint have been subsumed within the Montalvo v. Swift class action matter (discussed below).
	The issue of class certification must first be resolved before the court will address the merits of the case, and we retain all of our defenses against liability and damages pending a determination of class certification. The Company intends to vigorously defend certification of the class in both matters, as well as the merits of these matters, should the classes be certified. The final disposition of both cases and the impact of such final dispositions of these cases cannot be determined at this time.
	California Minimum Wage Class Actions
	On July 12, 2011, a class action lawsuit was filed by Simona Montalvo on behalf of herself and all similarly situated persons against Swift Transportation: Montalvo et al. v. Swift Transportation Corporation d/b/a ST Swift Transportation Corporation in the Superior Court of California, County of San Diego ("the Montalvo Complaint"). The Montalvo Complaint was removed to federal court on August 15, 2011, case number 3-11-CV-1827-L. Upon petition by plaintiffs, the matter was remanded to state court and the Company filed an appeal to this remand, which has been denied. The putative class includes employees alleging that candidates for employment within the four-year statutory period in California were not paid the state-mandated minimum wage during their orientation phase. On July 29, 2013, the court certified the class. The Company appealed the class certification and the remand to state court, but on April 10, 2014, the Company’s appeal of class certification was denied. The parties participated in mediation in an attempt to economically resolve all claims without having to incur the expense and uncertainty of litigation. As a consequence of ongoing efforts to mediate a resolution, the Company anticipates its exposure to be in the range of $1.0 million to $1.5 million.
	The Company intends to vigorously defend against the merits of this matter. The final disposition of this case and the impact of such final disposition of this case cannot be determined at this time.
	On November 7, 2013, a class action lawsuit was filed by Jorge Calix on behalf of himself and all similarly situated persons against Central Refrigerated Service, Inc.: Calix et al. v. Central Refrigerated Service, Inc. (“Central”) in the Superior Court of California, County of San Bernardino ("the Calix Complaint"). The putative class includes employees alleging that candidates for employment within the four -year statutory period in California were not paid the state-mandated minimum wage during their orientation phase. On December 13, 2013, Central filed an answer denying the allegations.
	The issue of class certification must first be resolved before the court will address the merits of the case, and the Company retains all of its defenses against liability and damages pending a determination of class certification. Central intends to vigorously defend against certification of the class, as well as the merits of this matter, should the class be certified. The final disposition of this case and the impact of such final disposition of this case cannot be determined at this time.
	California Wage and Hour Class Action
	On September 25, 2014, a class action lawsuit was filed by Lawrence Peck on behalf of himself and all other similarly situated persons against Swift Transportation: Peck v. Swift Transportation Co. Arizona, LLC in the Superior Court of California, County of Riverside ("the Peck Complaint"). The putative class includes current and former non-exempt employee truck drivers who performed services in California within the four-year statutory period alleging that Swift failed to pay for all hours worked (specifically that pay-per-mile fails to compensate drivers for non-driving related services), failed to pay overtime, failed to properly reimburse work-related expenses, failed to timely pay wages and failed to provide accurate wage statements.
	The issue of class certification must first be resolved before the court will address the merits of the case, and the Company retains all of its defenses against liability and damages pending a determination of class certification. The Company intends to vigorously defend certification of the class, as well as the merits, should the class be certified. The final disposition of the case and the impact of such final disposition cannot be determined at this time.
	Washington Overtime Class Action
	On September 9, 2011, a class action lawsuit was filed by Troy Slack on behalf of himself and all similarly situated persons against Swift Transportation: Troy Slack, et al v. Swift Transportation Co. of Arizona, LLC and Swift Transportation Corporation in the State Court of Washington, Pierce County ("the Slack Complaint"). The Slack Complaint was removed to federal court on October 12, 2011, case number 11-2-114380. The putative class includes all current and former Washington State based employee drivers during the three-year statutory period alleging that they were not paid overtime in accordance with Washington State law and that they were not properly paid for meals and rest periods. On November 23, 2013, the court entered an order on plaintiffs' motion to certify the class. The court only certified the class as it pertains to dedicated route drivers and did not certify any other class or claims, including any class related to over the road drivers (“OTR Drivers”). The court also further limited the class of dedicated drivers to only those dedicated drivers that either begin or end their shift in the state of Washington and therefore are Washington-based employees. Swift is appealing the limited certification of the Washington dedicated drivers.
	The issue of class certification must first be resolved before the court will address the merits of the case, and the Company retains all of its defenses against liability and damages pending a determination of class certification. The Company intends to vigorously defend certification of the class, as well as the merits of these matters, should the class be certified. The final disposition of this case and the impact of such final disposition of this case cannot be determined at this time.
	Utah Minimum Wage Collective Action
	On October 8, 2013, a collective action lawsuit was filed by Jacob Roberts on behalf of himself and all similarly situated persons against Central Refrigerated Service, Inc., Jon Isaacson, Bob Baer and John Does 1-10: Jacob Roberts and Collective Action Plaintiffs John Does 1-10 v. Central Refrigerated Service, Inc., Jon Isaacson, Bob Baer and John Does 1-10 in the United States District Court for the District of Utah, Case No. 2;13-ev-00911-EJF ("the Roberts Complaint"). The putative nationwide class includes employees alleging that candidates for employment within the three-year statutory period in Utah were not paid proper compensation pursuant to the FLSA, specifically that the putative collective action plaintiffs were not paid the state-mandated minimum wage for orientation, travel, and training.
	The issue of collective action certification in the Roberts Complaint must first be resolved before the court will address the merits of the case, and the Company retains all of its defenses against liability and damages, pending a determination of collective action certification. Central intends to vigorously defend against collective action certification, as well as the merits of this matter, should the collective action be certified. The final disposition of this case and the impact of such final disposition of this case cannot be determined at this time.
	Utah Collective and Individual Arbitration
	On June 1, 2012, a collective and class action complaint was filed by Gabriel Cilluffo, Kevin Shire and Bryan Ratterree individually and on behalf of themselves and all similarly situated persons against Central Refrigerated Services, Inc., Central Leasing, Inc., Jon Isaacson, and Jerry Moyes: Gabriel Cilluffo, Kevin Shire and Bryan Ratterree individually and on behalf themselves and all similarly situated persons v. Central Refrigerated Services, Inc., Central Leasing, Inc., Jon Isaacson, and Jerry Moyes in the United States District Court for the Central District of California, Case No. ED CV 12-00886 ("the Cilluffo Complaint"). The putative class involves owner-operators alleging that Central misclassified owner-operators as independent contractors in violation of the FLSA, and that such owner-operators should be considered employees. The lawsuit also raises a claim of forced labor and state law contractual claims. On September 24, 2012, the California District Court ordered that the FLSA claim proceed to collective arbitration under the Utah Uniform Arbitration Act (“UUAA”) and not the FAA. The September 24, 2012 order directed the arbitrator to determine the validity of proceeding as a collective arbitration under the UUAA, and then if the arbitrator determines that such collective action is permitted, then the arbitrator is to consider the plaintiff’s FLSA claim. On November 8, 2012, the California District Court entered a clarification order clarifying that the plaintiff’s FLSA claim was to proceed to collective arbitration under the UUAA, but the plaintiff’s forced labor claim and state law contractual claims were to proceed as individual arbitrations for those plaintiffs seeking to pursue those specific claims. Central filed a motion for reconsideration and a motion for interlocutory appeal of the California District Court’s orders, both of which were denied and the claims are proceeding to collective and individual arbitration as originally ordered. On December 9, 2013 the arbitrator determined that the issue of misclassification as it relates to the FLSA will proceed as a collective arbitration, however the plaintiffs forced labor claim and state law claims of contractual misrepresentation and breach of contract must proceed on an individual arbitration basis and not as a class.
	Central intends to vigorously defend collective arbitration in the Cilluffo Complaint, as well as the merits of the FLSA claim and any individual arbitration matters that are filed, and proceed on the forced labor and state contract law claims. The final disposition of this case and the impact of such final disposition of this case cannot be determined at this time.
	Environmental Notice
	On April 17, 2009, the Company received a notice from the Lower Willamette Group ("LWG"), advising that there are a total of 250 potentially responsible parties ("PRPs"), with respect to alleged environmental contamination of the Lower Willamette River in Portland, Oregon designated as the Portland Harbor Superfund site ("the Site"), and that as a previous landowner at the Site, the Company has been asked to join a group of 60 PRPs and proportionately contribute to (i) reimbursement of funds expended by LWG to investigate environmental contamination at the Site and (ii) remediation costs of the same, rather than be exposed to potential litigation. Although the Company does not believe it contributed any contaminants to the Site, the Company was at one time the owner of property at the Site and the Comprehensive Environmental Response, Compensation and Liability Act imposes a standard of strict liability on property owners with respect to environmental claims. Notwithstanding this standard of strict liability, the Company believes our potential proportionate exposure to be minimal and not material. No formal complaint has been filed in this matter. The Company’s pollution liability insurer has been notified of this potential claim. The Company does not believe the outcome of this matter is likely to have a material adverse effect on Swift. However, the final disposition of this matter and the impact of such final disposition cannot be determined at this time.
	2013 Environmental Incident
	On May 14, 2013, a Swift Transportation tractor and trailer was involved in an accident in Bridgeport, California that resulted in fuel and other liquid components being released into the ground and a nearby stream. Based on soil and water testing of the impacted area, the Company expects the range of cost to remediate this release is $0.3 million to $0.5 million.
	Other Environmental
	The Company's tractors and trailers are involved in motor vehicle accidents, experience damage, mechanical failures and cargo issues as an incidental part of its normal ordinary course of operations.  From time to time, these matters result in the discharge of diesel fuel, motor oil or other hazardous materials into the environment.  Depending on local regulations and who is determined to be at fault, the Company is sometimes responsible for the clean-up costs associated with these discharges.  As of September 30, 2014, the Company's estimate for its total legal liability for all such clean-up and remediation costs was approximately $0.6 million in the aggregate for all current and prior year claims.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The Company’s four reportable operating segments are Truckload, Dedicated, Central Refrigerated and Intermodal. The Company reorganized its reportable segments to reflect management’s revised reporting structure of its lines of business in the first quarter of 2014. See further details in Note 1.
	•	Truckload — The truckload segment consists of one-way movements over irregular routes throughout the United States, Mexico, and Canada. This service utilizes both company and owner-operator tractors with dry van, flatbed, and other specialized trailing equipment.
	•	Dedicated — Through the dedicated segment, the Company devotes use of equipment to specific customers and offers tailored solutions under long-term contracts. This dedicated segment utilizes refrigerated, dry van, flatbed and other specialized trailing equipment.
	•	Central Refrigerated — This segment represents the core operations of Central Refridgerated and primarily consists of shipments for customers that require temperature-controlled trailers. These shipments include one-way movements over irregular routes, as well as dedicated truck operations.
	•	Intermodal — The intermodal segment includes revenue generated by moving freight over the rail in the Company's containers and other trailing equipment, combined with revenue for drayage to transport loads between the railheads and customer locations.
	•	Other businesses — The other non-reportable segment includes the Company's logistics and freight brokerage services, as well as support services provided by its subsidiaries to customers and owner-operators, including repair and maintenance shop services, equipment leasing, and insurance. Intangible amortization related to the 2007 going-private transaction is also included in this other non-reportable segment.
	The Company uses the “management approach” to determine its reportable operating segments, as well as to determine the basis of reporting the operating segment information. The management approach focuses on financial information that the Company’s management uses to make operating decisions. The chief operating decision makers use operating revenue, operating expenses, operating ratios, operating income and key operating statistics to evaluate performance and allocate resources to the Company’s operations.
	Management uses operating income, as reported below, to allocate resources and measure segment performance, which is consistent with GAAP for segment reporting. Operating income should not be viewed as a substitute for GAAP net income (loss). The Company believes the presentation of operating income enhances the understanding of its performance by highlighting the results of operations and the underlying profitability drivers of the business segments.
	Operating income is defined as operating revenues less operating expenses, before tax.
	Based on the unique nature of the Company's operating structure, revenue-generating assets are interchangeable between segments. Therefore, the Company does not prepare separate balance sheets by segment, as assets are not separately identifiable by segment. The Company allocates depreciation and amortization expense on its property and equipment to the segments based on the actual utilization of the asset by the segment during the period.
	Total revenue of the Company’s foreign operations was less than 5.0% of the Company’s consolidated revenue for the three and nine months ended September 30, 2014 and 2013, respectively.
	Set forth in the tables below is certain financial information with respect to the Company’s reportable segments (in thousands):
			Operating Revenue
			Three Months Ended September 30,						Nine Months Ended September 30,
			2014			2013			2014			2013
	Truckload		$	570,931		$	579,494		$	1,699,469		$	1,727,813
	Dedicated		238,025			184,550			654,776			546,427
	Central Refrigerated		100,448			115,339			314,122			332,979
	Intermodal		99,962			96,478			292,186			270,736
	Subtotal		1,009,366			975,861			2,960,553			2,877,955
	Non-reportable segment		80,122			63,982			239,279			207,954
	Intersegment eliminations		(14,608		)	(7,716		)	(40,608		)	(43,103		)
	Consolidated operating revenue		$	1,074,880		$	1,032,127		$	3,159,224		$	3,042,806
			Operating Income (Loss)
			Three Months Ended September 30,						Nine Months Ended September 30,
			2014			2013			2014			2013
	Truckload		$	71,186		$	58,053		$	172,689		$	165,070
	Dedicated		23,692			20,508			56,334			63,725
	Central Refrigerated		3,238			3,422			9,320			13,803
	Intermodal		1,934			1,531			513			715
	Subtotal		100,050			83,514			238,856			243,313
	Non-reportable segment		(2,639		)	906			(1,253		)	11,091
	Consolidated operating income		$	97,411		$	84,420		$	237,603		$	254,404
			Depreciation and Amortization Expense
			Three Months Ended September 30,						Nine Months Ended September 30,
			2014			2013			2014			2013
	Truckload		$	27,473		$	32,696		$	86,034		$	96,076
	Dedicated		13,890			11,711			39,965			33,439
	Central Refrigerated		3,175			2,877			9,195			10,676
	Intermodal		2,892			2,292			7,843			7,037
	Subtotal		47,430			49,576			143,037			147,228
	Non-reportable segment		6,939			8,678			22,298			22,776
	Consolidated depreciation and amortization expense		$	54,369		$	58,254		$	165,335		$	170,004
	Other Intersegment Transactions
	Certain operating segments provide transportation and related services for other affiliates outside their reportable segment. Revenues for such services are reflected as revenues of the billing segment, and are based on negotiated rates, which management believes approximate fair value. These rates are adjusted from time to time based on market conditions. Such intersegment revenues and expenses are eliminated in our consolidated results.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Accumulated Other Comprehensive Income	'
	Accumulated Other Comprehensive Loss
	The following table reflects the components of accumulated other comprehensive loss (in thousands):
		Derivative Financial Instruments			Foreign Currency Transactions			Accumulated Other Comprehensive Loss
	Balance as of December 31, 2013	$	(6,245	)	$	83		$	(6,162	)
	Amounts reclassified from accumulated other comprehensive loss, net of income tax	2,728			—			2,728
	Other comprehensive income, net of income taxes	2,728			—			2,728
	Balance as of September 30, 2014	$	(3,517	)	$	83		$	(3,434	)
	(Amounts in parenthesis indicate debits, or loss).
	The following table presents details about reclassifications out of accumulated other comprehensive loss for the three and nine months ended September 30, 2014 and 2013 (in thousands):
		Amounts Reclassified from Accumulated Other Comprehensive Loss
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013			Statements of Income Classification
	Cash flow hedging activities:
	Losses on interest rate swaps	$	1,642		$	1,106		$	4,438		$	2,065		Derivative interest expense
	Income tax benefit	(633		)	(431		)	(1,710		)	(805		)	Income tax expense
		$	1,009		$	675		$	2,728		$	1,260		Net income

Guarantor_Condensed_Consolidat

Guarantor Condensed Consolidating Financial Statements	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Guarantor Condensed Consolidating Financial Statements	'
	Guarantor Condensed Consolidating Financial Statements
	The payment of principal and interest on the Company’s senior secured second priority notes are guaranteed by the Company and the Company’s 100%-owned domestic subsidiaries (the “Guarantor Subsidiaries”) other than its driver academy subsidiary, its captive insurance subsidiaries, its special-purpose receivables securitization subsidiary, and its foreign subsidiaries (the “Non-guarantor Subsidiaries”). The separate financial statements of the Guarantor Subsidiaries are not included herein because the Guarantor Subsidiaries are the Company’s 100%-owned consolidated subsidiaries and are jointly, severally, fully and unconditionally liable for the obligations represented by the senior secured second priority notes.
	Pursuant to the terms of the Indenture governing the senior secured second priority notes, the guarantees are full and unconditional, but are subject to release under the following circumstances, in each case, in accordance with the terms of the Indenture:
	Ÿ in connection with any sale, disposition or transfer of all or substantially all of the assets to a person that is not the parent, the Company or a subsidiary guarantor;
	Ÿ in connection with any sale, disposition or transfer of all of the capital stock of that subsidiary guarantor to a person that is not the parent, the Company or a subsidiary guarantor;
	Ÿ if the Company designates any restricted subsidiary that is a subsidiary guarantor to be an Unrestricted Subsidiary,
	Ÿ upon legal Defeasance or the discharge of the Company's obligation under the Indenture; or
	Ÿ at such time as such subsidiary guarantor does not have any indebtedness that would have required a guarantee.
	Although the guarantees are subject to release under the above described circumstances, we have concluded they are still deemed full and unconditional for purposes of Rule 3-10 of Regulation S-X because these circumstances are customary, and accordingly, the Company concluded that it may rely on Rule 3-10 of Regulation S-X, as the other requirements of Rule 3-10 have been met.
	The condensed financial statements present condensed financial data for (i) Swift Transportation Company (on a parent only basis), (ii) Swift Services Holdings, Inc. (on an issuer only basis), (iii) the combined Guarantor Subsidiaries, (iv) the combined Non-Guarantor Subsidiaries, (v) an elimination column for adjustments to arrive at the information for the parent company and subsidiaries on a consolidated basis and (vi) the parent company and subsidiaries on a consolidated basis as of September 30, 2014 and December 31, 2013 and for the three and nine months ended September 30, 2014 and 2013.
	Investments in subsidiaries are accounted for by the respective parent company using the equity method for purposes of this presentation. Results of operations of subsidiaries are therefore reflected in the parent company’s investment accounts and earnings. The principal elimination entries set forth below eliminate investments in subsidiaries and intercompany balances and transactions.
	Condensed consolidating balance sheet as of September 30, 2014 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Cash and cash equivalents	$	—		$	—		$	61,972		$	8,324		$	—		$	70,296
	Restricted cash	—			—			—			51,511			—			51,511
	Restricted investments, held to maturity, amortized cost	—			—			—			25,091			—			25,091
	Accounts receivable, net	—			—			29,566			428,333			(3,711		)	454,188
	Intercompany receivable	119,902			315,358			—			56,589			(491,849		)	—
	Other current assets	10,473			—			121,424			16,366			(5,485		)	142,778
	Total current assets	130,375			315,358			212,962			586,214			(501,045		)	743,864
	Property and equipment, net	—			—			1,447,056			36,887			—			1,483,943
	Investment in subsidiaries	349,664			946,319			1,040,096			—			(2,336,079		)	—
	Other assets	11,360			1,809			62,185			3,637			(31,953		)	47,038
	Intangible assets, net	—			—			295,060			9,076			—			304,136
	Goodwill	—			—			246,977			6,279			—			253,256
	Total assets	$	491,399		$	1,263,486		$	3,304,336		$	642,093		$	(2,869,077	)	$	2,832,237
	Intercompany payable	$	—		$	5,485		$	491,849		$	—		$	(497,334	)	$	—
	Current portion of long-term debt and obligations under capital leases	609			—			71,877			23,112			(19,460		)	76,138
	Other current liabilities	9,205			14,106			335,313			21,463			(3,711		)	376,376
	Total current liabilities	9,814			19,591			899,039			44,575			(520,505		)	452,514
	Long-term debt and obligations under capital leases, less current portion	—			423,596			562,776			3,061			(709		)	988,724
	Deferred income taxes	—			—			452,525			7,499			(11,784		)	448,240
	Revolving line of credit	—			—			82,000			—			—			82,000
	Securitization of accounts receivable	—			—			—			315,000			—			315,000
	Other liabilities	—			—			91,267			52,008			—			143,275
	Total liabilities	9,814			443,187			2,087,607			422,143			(532,998		)	2,429,753
	Total stockholders’ equity	481,585			820,299			1,216,729			219,950			(2,336,079		)	402,484
	Total liabilities and stockholders’ equity	$	491,399		$	1,263,486		$	3,304,336		$	642,093		$	(2,869,077	)	$	2,832,237
	Condensed consolidating balance sheet as of December 31, 2013 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Cash and cash equivalents	$	—		$	—		$	54,564		$	4,614		$	—		$	59,178
	Restricted cash	—			—			—			50,833			—			50,833
	Restricted investments, held to maturity, amortized cost	—			—			—			25,814			—			25,814
	Accounts receivable, net	—			—			28,997			394,044			(4,605		)	418,436
	Intercompany receivable	85,498			400,569			—			55,799			(541,866		)	—
	Other current assets	37,022			—			127,775			16,270			(1,296		)	179,771
	Total current assets	122,520			400,569			211,336			547,374			(547,767		)	734,032
	Property and equipment, net	—			—			1,407,414			40,393			—			1,447,807
	Investment in subsidiaries	239,432			870,599			983,289			—			(2,093,320		)	—
	Other assets	11,780			2,355			83,967			4,639			(45,575		)	57,166
	Intangible assets, net	—			—			307,092			9,655			—			316,747
	Goodwill	—			—			246,977			6,279			—			253,256
	Total assets	$	373,732		$	1,273,523		$	3,240,075		$	608,340		$	(2,686,662	)	$	2,809,008
	Intercompany payable	$	—		$	1,296		$	542,772		$	—		$	(544,068	)	$	—
	Current portion of long-term debt and obligations under capital leases	6,036			—			64,970			36,626			(32,576		)	75,056
	Other current liabilities	2,281			6,389			277,921			27,170			(4,449		)	309,312
	Total current liabilities	8,317			7,685			885,663			63,796			(581,093		)	384,368
Long-term debt and obligations under capital leases, less current portion	—			493,825			747,918			5,046			(25		)	1,246,764
Deferred income taxes	—			—			487,670			8,754			(12,224		)	484,200
Securitization of accounts receivable	—			—			—			264,000			—			264,000
Revolving line of credit	—			—			17,000			—			—			17,000
Other liabilities	—			—			73,774			55,315			—			129,089
Total liabilities	8,317			501,510			2,212,025			396,911			(593,342		)	2,525,421
Total stockholders’ equity	365,415			772,013			1,028,050			211,429			(2,093,320		)	283,587
Total liabilities and stockholders’ equity	$	373,732		$	1,273,523		$	3,240,075		$	608,340		$	(2,686,662	)	$	2,809,008
Condensed consolidating statement of income for the three months ended September 30, 2014 (in thousands)
	Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Services			Subsidiaries			Guarantor			for
	Company			Holdings, Inc.						Subsidiaries			Consolidation
	(Parent)			(Issuer)
Operating revenue	$	—		$	—		$	1,055,901		$	37,149		$	(18,170	)	$	1,074,880
Operating expenses:
Salaries, wages and employee benefits	1,540			—			230,835			7,630			—			240,005
Operating supplies and expenses	1,122			2			86,546			3,444			(2,655		)	88,459
Fuel	—			—			142,837			6,262			—			149,099
Purchased transportation	—			—			338,611			1,663			(12,162		)	328,112
Rental expense	—			—			59,049			771			(165		)	59,655
Insurance and claims	1,739			—			29,786			9,336			(3,188		)	37,673
Depreciation and amortization of property and equipment	—			—			52,981			1,388			—			54,369
Amortization of intangibles	—			—			4,011			193			—			4,204
Impairments	—			—			2,308			—			—			2,308
Gain on disposal of property and equipment	—			—			(11,620		)	(8		)	—			(11,628		)
Communication and utilities	—			—			6,964			357			—			7,321
Operating taxes and licenses	—			—			15,499			2,393			—			17,892
Total operating expenses	4,401			2			957,807			33,429			(18,170		)	977,469
Operating income (loss)	(4,401		)	(2		)	98,094			3,720			—			97,411
Interest expense, net	7			11,306			8,994			1,044			—			21,351
Other (income) expenses, net	(53,488		)	(33,619		)	(29,178		)	(3,470		)	121,767			2,012
Income before income taxes	49,080			22,311			118,278			6,146			(121,767		)	74,048
Income tax expense (benefit)	(1,078		)	(5,250		)	28,319			1,899			—			23,890
Net income (loss)	$	50,158		$	27,561		$	89,959		$	4,247		$	(121,767	)	$	50,158
Condensed consolidating statement of income for the three months ended September 30, 2013 (in thousands)
	Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Services			Subsidiaries			Guarantor			for
	Company			Holdings, Inc.						Subsidiaries			Consolidation
	(Parent)			(Issuer)
Operating revenue	$	—		$	—		$	1,015,440		$	38,205		$	(21,518	)	$	1,032,127
Operating expenses:
Salaries, wages and employee benefits	1,081			—			211,717			7,358			—			220,156
Operating supplies and expenses	552			2			84,036			2,931			(2,317		)	85,204
Fuel	—			—			154,478			6,083			—			160,561
Purchased transportation	—			—			328,677			2,274			(12,630		)	318,321
Rental expense	—			—			45,639			781			(158		)	46,262
Insurance and claims	—			—			28,956			12,567			(6,413		)	35,110
Depreciation and amortization of property and equipment	—			—			57,032			1,222			—			58,254
Amortization of intangibles	—			—			4,011			193			—			4,204
Gain on disposal of property and equipment	—			—			(5,622		)	3			—			(5,619		)
Communication and utilities	—			—			6,444			235			—			6,679
Operating taxes and licenses	—			—			16,034			2,541			—			18,575
Total operating expenses	1,633			2			931,402			36,188			(21,518		)	947,707
Operating income (loss)	(1,633		)	(2		)	84,038			2,017			—			84,420
Interest expense, net	—			12,913			11,780			763			—			25,456
Other (income) expenses, net	(34,203		)	(31,083		)	(20,238		)	(2,574		)	90,953			2,855
Income (loss) before income taxes	32,570			18,168			92,496			3,828			(90,953		)	56,109
Income tax expense (benefit)	2,819			(4,853		)	27,007			1,183			—			26,156
Net income (loss)	$	29,751		$	23,021		$	65,489		$	2,645		$	(90,953	)	$	29,953
Condensed consolidating statement of income for the nine months ended September 30, 2014 (in thousands)
	Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Services			Subsidiaries			Guarantor			for
	Company			Holdings, Inc.						Subsidiaries			Consolidation
	(Parent)			(Issuer)
Operating revenue	$	—		$	—		$	3,099,650		$	114,877		$	(55,303	)	$	3,159,224
Operating expenses:
Salaries, wages and employee benefits	3,892			—			680,266			23,306			—			707,464
Operating supplies and expenses	2,485			3			247,636			11,368			(8,131		)	253,361
Fuel	—			—			438,464			20,334			—			458,798
Purchased transportation	—			—			1,017,617			6,715			(36,802		)	987,530
Rental expense	—			—			165,565			2,437			(493		)	167,509
Insurance and claims	5,134			—			90,178			28,007			(9,877		)	113,442
Depreciation and amortization of property and equipment	—			—			161,222			4,113			—			165,335
Amortization of intangibles	—			—			12,032			579			—			12,611
Impairments	—			—			2,308			—			—			2,308
Gain on disposal of property and equipment	—			—			(23,091		)	(8		)	—			(23,099		)
Communication and utilities	—			—			21,285			922			—			22,207
Operating taxes and licenses	62			—			46,079			8,014			—			54,155
Total operating expenses	11,573			3			2,859,561			105,787			(55,303		)	2,921,621
Operating income (loss)	(11,573		)	(3		)	240,089			9,090			—			237,603
Interest expense, net	56			36,005			28,319			3,462			—			67,842
Other (income) expenses, net	(110,231		)	(68,129		)	(46,041		)	(10,017		)	244,759			10,341
Income (loss) before income taxes	98,602			32,121			257,811			15,645			(244,759		)	159,420
Income tax expense (benefit)	(4,059		)	(16,164		)	71,860			5,122			—			56,759
Net income (loss)	$	102,661		$	48,285		$	185,951		$	10,523		$	(244,759	)	$	102,661
Condensed consolidating statement of income for the nine months ended September 30, 2013 (in thousands)
	Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Services			Subsidiaries			Guarantor			for
	Company			Holdings, Inc.						Subsidiaries			Consolidation
	(Parent)			(Issuer)
Operating revenue	$	—		$	—		$	2,989,063		$	117,644		$	(63,901	)	$	3,042,806
Operating expenses:
Salaries, wages and employee benefits	2,459			—			645,784			22,250			—			670,493
Operating supplies and expenses	1,682			6			229,568			10,960			(5,949		)	236,267
Fuel	—			—			470,395			19,168			—			489,563
Purchased transportation	—			—			948,073			8,892			(38,371		)	918,594
Rental expense	—			—			127,789			2,578			(486		)	129,881
Insurance and claims	—			—			85,249			34,091			(19,095		)	100,245
Depreciation and amortization of property and equipment	—			—			166,582			3,422			—			170,004
Amortization of intangibles	—			—			12,032			579			—			12,611
Gain on disposal of property and equipment	—			—			(13,634		)	24			—			(13,610		)
Communication and utilities	—			—			18,486			659			—			19,145
Operating taxes and licenses	—			—			47,203			8,006			—			55,209
Total operating expenses	4,141			6			2,737,527			110,629			(63,901		)	2,788,402
Operating income (loss), net	(4,141		)	(6		)	251,536			7,015			—			254,404
Interest expense, net	—			38,740			34,534			3,263			—			76,537
Other (income) expenses	(78,546		)	(76,531		)	(51,509		)	(7,920		)	214,443			(63		)
Income before income taxes	74,405			37,785			268,511			11,672			(214,443		)	177,930
Income tax expense (benefit)	(21,629		)	(14,435		)	99,343			4,527			—			67,806
Net income (loss)	$	96,034		$	52,220		$	169,168		$	7,145		$	(214,443	)	$	110,124
Condensed consolidating statement of comprehensive income for the three months ended September 30, 2014 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net income	$	50,158		$	27,561		$	89,959		$	4,247		$	(121,767	)	$	50,158
Other comprehensive income before income taxes:
Accumulated losses on derivatives reclassified to derivative interest expense	—			—			1,642			—			—			1,642
Other comprehensive income before income taxes	—			—			1,642			—			—			1,642
Income tax effect of items within other comprehensive income	—			—			(633		)	—			—			(633		)
Total comprehensive income	$	50,158		$	27,561		$	90,968		$	4,247		$	(121,767	)	$	51,167
Condensed consolidating statement of comprehensive income for the three months ended September 30, 2013 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net income (loss)	$	29,751		$	23,021		$	65,489		$	2,645		$	(90,953	)	$	29,953
Other comprehensive income before income taxes:
Accumulated losses on derivatives reclassified to derivative interest expense	—			—			1,106			—			—			1,106
Other comprehensive income before income taxes	—			—			1,106			—			—			1,106
Income tax effect of items within other comprehensive income	—			—			(326		)	—			—			(326		)
Total comprehensive income (loss)	$	29,751		$	23,021		$	66,269		$	2,645		$	(90,953	)	$	30,733
Condensed consolidating statement of comprehensive income for the nine months ended September 30, 2014 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net income (loss)	$	102,661		$	48,285		$	185,951		$	10,523		$	(244,759	)	$	102,661
Other comprehensive income before income taxes:
Accumulated losses on derivatives reclassified to derivative interest expense	—			—			4,438			—			—			4,438
Other comprehensive income before income taxes	—			—			4,438			—			—			4,438
Income tax effect of items within other comprehensive income	—			—			(1,710		)	—			—			(1,710		)
Total comprehensive income (loss)	$	102,661		$	48,285		$	188,679		$	10,523		$	(244,759	)	$	105,389
Condensed consolidating statement of comprehensive income for the nine months ended September 30, 2013 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net income (loss)	$	96,034		$	52,220		$	169,168		$	7,145		$	(214,443	)	$	110,124
Other comprehensive income before income taxes:
Accumulated losses on derivatives reclassified to derivative interest expense	—			—			2,065			—			—			2,065
Change in fair value of interest rate swaps	—			—			(145		)	—			—			(145		)
Other comprehensive income before income taxes	—			—			1,920			—			—			1,920
Income tax effect of items within other comprehensive income	—			—			(544		)	—			—			(544		)
Total comprehensive income (loss)	$	96,034		$	52,220		$	170,544		$	7,145		$	(214,443	)	$	111,500
Condensed consolidating statement of cash flows for the nine months ended September 30, 2014 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net cash provided by (used in) operating activities	$	30,214		$	(13,288	)	$	304,671		$	(28,784	)	$	—		$	292,813
Cash flows from investing activities:
Increase in restricted cash	—			—			—			(678		)	—			(678		)
Change in restricted investments	—			—			—			364			—			364
Proceeds from sale of property and equipment	—			—			116,638			34			—			116,672
Capital expenditures	—			—			(210,488		)	(625		)	—			(211,113		)
Payments received on notes receivable				—			3,759			—			—			3,759
Expenditures on assets held for sale	—			—			(2,900		)	—			—			(2,900		)
Payments received on assets held for sale	—			—			20,089			—			—			20,089
Dividends from subsidiary	—			—			2,000			—			(2,000		)	—
Payments received on equipment sale receivables	—			—			368			—			—			368
Net cash used in investing activities	—			—			(70,534		)	(905		)	(2,000		)	(73,439		)
Cash flows from financing activities:
Proceeds from long-term debt	—			—			450,000			—			—			450,000
Payment of deferred loan costs	—			—			(11,684		)	(100		)	—			(11,784		)
Borrowings under accounts receivable securitization	—			—			—			100,000			—			100,000
Repayment of long-term debt and capital leases	(5,427		)	(71,924		)	(691,666		)	(3,071		)	—			(772,088		)
Net borrowings on revolving line of credit	—			—			65,000			—			—			65,000
Repayment of accounts receivable securitization	—			—			—			(49,000		)	—			(49,000		)
Dividends to parent	—			—			—			(2,000		)	2,000			—
Net funding (to) from affiliates	(34,403		)	85,212			(38,379		)	(12,430		)	—			—
Proceeds from exercise of stock options	7,587			—			—			—			—			7,587
Income tax benefit from exercise of stock options	2,029			—			—			—			—			2,029
Net cash (used in) provided by financing activities	(30,214		)	13,288			(226,729		)	33,399			2,000			(208,256		)
Net increase in cash and cash equivalents	—			—			7,408			3,710			—			11,118
Cash and cash equivalents at beginning of period	—			—			54,564			4,614			—			59,178
Cash and cash equivalents at end of period	$	—		$	—		$	61,972		$	8,324		$	—		$	70,296
Condensed consolidating statement of cash flows for the nine months ended September 30, 2013 (in thousands)
	Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
	Company			(Issuer)						Subsidiaries			Consolidation
	(Parent)
Net cash provided by (used in) operating activities	$	25,038		$	(8,081	)	$	359,079		$	(20,173	)	$	—		$	355,863
Cash flows from investing activities:
Decrease in restricted cash	—			—			—			1,302			—			1,302
Change in restricted investments	—			—			—			(1,900		)	—			(1,900		)
Proceeds from sale of property and equipment	—			—			75,663			149			—			75,812
Capital expenditures	—			—			(231,701		)	(5,289		)	—			(236,990		)
Payments received on notes receivable	—			—			2,775			—			—			2,775
Expenditures on assets held for sale	—			—			(17,442		)	—			—			(17,442		)
Payments received on assets held for sale	—			—			47,365			—			—			47,365
Payments received on equipment sale receivables	—			—			1,266			—			—			1,266
Dividends from subsidiary	—			—			6,800			—			(6,800		)	—
Payments received on intercompany notes payable	—			—			3,399			—			(3,399		)	—
Capital contribution to subsidiary	—			—			(1,160		)	—			1,160			—
Acquisition of Central Refrigerated, net of debt repayment	—			—			(147,822		)	—			—			(147,822		)
Net cash used in investing activities	—			—			(260,857		)	(5,738		)	(9,039		)	(275,634		)
Cash flows from financing activities:
Repayment of long-term debt and capital leases	—			—			(192,041		)	(7,449		)	—			(199,490		)
Net borrowings on revolving line of credit	—			—			59,469			—			—			59,469
Borrowings under accounts receivable securitization	—			—			—			180,000			—			180,000
Repayment of accounts receivable securitization	—			—			—			(124,000		)	—			(124,000		)
Proceeds from long-term debt	—			—			16,000			10,268			—			26,268
Payment of deferred loan costs	—			—			(1,332		)	(851		)	—			(2,183		)
Distribution to Central stockholders, pre-acquisition	—			—			(2,499		)	—			—			(2,499		)
Issuance of Central loan receivable, pre-acquisition	—			—			(30,000		)	—			—			(30,000		)
Proceeds from exercise of stock options	10,422			—			—			—			—			10,422
Income tax benefit from exercise of stock options	(383		)	—			—			—			—			(383		)
Dividend to parent	—			—			—			(6,800		)	6,800			—
Capital contribution	—			—			—			1,160			(1,160		)	—
Repayment of intercompany notes payable	—			—			—			(3,399		)	3,399			—
Net funding (to) from affiliates	(35,077		)	8,081			53,479			(26,483		)	—			—
Net cash (used in) provided by financing activities	(25,038		)	8,081			(96,924		)	22,446			9,039			(82,396		)
Net increase (decrease) in cash and cash equivalents	—			—			1,298			(3,465		)	—			(2,167		)
Cash and cash equivalents at beginning of period	—			—			43,877			9,719			—			53,596
Cash and cash equivalents at end of period	$	—		$	—		$	45,175		$	6,254		$	—		$	51,429

Investments_Tables

Investments (Tables)	9 Months Ended
	Sep. 30, 2014
Schedule of Investments [Abstract]	'
Amortized Cost, Gross Unrealized Gains And Losses, Estimated Fair Value Of Fixed Maturity Securities	'
	The following table presents the cost or amortized cost, gross unrealized gains and temporary losses, and estimated fair value of the Company’s restricted investments as of September 30, 2014 and December 31, 2013 (in thousands):
		30-Sep-14
		Cost or		Gross Unrealized				Estimated
		Amortized		Gains		Temporary		Fair
		Cost				Losses		Value
	U.S. corporate securities	$	21,960	$	3	$	3	$	21,960
	Foreign corporate securities	1,506		—		2		1,504
	Negotiable certificates of deposit	1,625		—		1		1,624
	Total restricted investments	$	25,091	$	3	$	6	$	25,088
		December 31, 2013
		Cost or		Gross Unrealized				Estimated
		Amortized				Temporary		Fair
		Cost		Gains		Losses		Value
	U.S. corporate securities	$	20,197	$	2	$	7	$	20,192
	Foreign corporate securities	3,502		—		—		3,502
	Negotiable certificates of deposit	2,115		—		1		2,114
	Total restricted investments	$	25,814	$	2	$	8	$	25,808

Intangible_Assets_Tables

Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule Of Intangible Assets	'
	Intangible assets as of September 30, 2014 and December 31, 2013 were as follows (in thousands):
		30-Sep-14			31-Dec-13
	Customer Relationships:
	Gross carrying value	$	275,324		$	275,324
	Accumulated amortization	(152,225		)	(139,614		)
	Trade Name:
	Gross carrying value	181,037			181,037
	Intangible assets, net	$	304,136		$	316,747
Amortization expense related to the 2007 going private transaction	'
	The following table presents amortization of intangibles for the three and nine months ended September 30, 2014 and 2013, related to intangible assets recognized in conjunction with the 2007 going private transaction and the previous intangible assets existing prior to the 2007 going private transaction (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014		2013
	Amortization of intangible assets related to 2007 going private transaction	$	3,912		$	3,912		$	11,736	$	11,736
	Amortization of intangible assets related to intangible assets existing prior to the 2007 going private transaction	292			292			875		875
	Amortization of intangibles	$	4,204		$	4,204		$	12,611	$	12,611

Assets_Held_For_Sale_Tables

Assets Held For Sale (Tables)	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Schedule Of Assets Held For Sale	'
	Assets held for sale as of September 30, 2014 and December 31, 2013 were as follows (in thousands):
		30-Sep-14		31-Dec-13
	Land and facilities	$	1,904	$	14,627
	Revenue equipment	3,848		4,641
	Assets held for sale	$	5,752	$	19,268

Debt_And_Financing_Transaction1

Debt And Financing Transactions (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule Of Long-Term Debt Outstanding	'
	Other than the Company’s accounts receivable securitization, as discussed in Note 8, and its outstanding capital lease obligations as discussed in Note 9, the Company had long-term debt outstanding as of September 30, 2014 and December 31, 2013 as follows (in thousands):
		30-Sep-14		31-Dec-13
	Senior secured first lien term loan A tranche due June 2019	$	50,000	$	—
	Senior secured first lien term loan B tranche due June 2021, net of $956 OID as of September 30, 2014	397,044		—
	Senior secured first lien term loan B-1 tranche due December 2016	—		229,000
	Senior secured first lien term loan B-2 tranche due December 2017	—		410,000
	Senior secured second priority notes due November 15, 2018, net of $4,480 and $6,175 OID as of September 30, 2014 and December 31, 2013, respectively	423,596		493,825
	Other	8,319		17,480
	Total	878,959		1,150,305
	Less: current portion	26,833		11,387
	Long-term debt	$	852,126	$	1,138,918

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Classification Of Gains And Losses On Interest Rate Derivative Contracts Designated As Hedging Instruments	'
	The following table presents the pre-tax changes in fair value of derivatives designated as cash flow hedges, included in AOCI and earnings (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Amount of derivatives income recognized in AOCI (effective portion)	$	—		$	—		$	—		$	145
	Amount of loss reclassified from AOCI into income as “Derivative interest expense” (effective portion)	$	(1,642	)	$	(1,106	)	$	(4,438	)	$	(2,065	)
Pre-Tax Gains And Losses On Interest Rate Derivative Contracts De-Designated As Hedging Instruments	'
	The following table presents information about pre-tax losses recognized in earnings on the Company’s interest rate derivative contracts that were de-designated as hedging instruments under ASC Topic 815 on February 28, 2013 (in thousands):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Amount of loss recognized in income as “Derivative interest expense”	$	(114	)	$	(359	)	$	(589	)	$	(494	)

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Carrying Amounts And Estimated Fair Values Of Financial Instruments	'
	The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments as of September 30, 2014 and December 31, 2013 (in thousands):
		30-Sep-14				31-Dec-13
		Carrying		Estimated		Carrying		Estimated
		Value		Fair Value		Value		Fair Value
	Financial Assets:
	Restricted investments	$	25,091	$	25,088	$	25,814	$	25,808
	Financial Liabilities:
	Senior secured first lien term loan A tranche	50,000		50,000		—		—
	Senior secured first lien term loan B tranche	397,044		395,309		—		—
	Senior secured first lien term loan B-1 tranche (2013 Agreement)	—		—		229,000		230,031
	Senior secured first lien term loan B-2 tranche (2013 Agreement)	—		—		410,000		412,358
	Senior secured second priority notes	423,596		445,305		493,825		549,059
	Securitization of accounts receivable	315,000		315,000		264,000		264,000
Liabilities That Were Measured At Estimated Fair Value On Recurring Basis	'
	As of September 30, 2014 and December 31, 2013, no assets of the Company were measured at estimated fair value on a recurring basis. As of September 30, 2014 and December 31, 2013, information about inputs into the estimated fair value measurements of each major category of the Company’s liabilities that were measured at estimated fair value on a recurring basis in periods subsequent to their initial recognition was as follows (in thousands):
				Fair Value Measurements at Reporting Date Using
	Description	Total		Quoted Prices in		Significant		Significant
		Estimated		Active  Markets for		Other		Unobservable
		Fair Value		Identical Assets or		Observable		Inputs
				Liabilities		Inputs		(Level 3)
				(Level 1)		(Level 2)
	As of September 30, 2014
	Interest rate swaps	$	7,815	$	—	$	7,815	$	—
	As of December 31, 2013
	Interest rate swaps	$	11,768	$	—	$	11,768	$	—

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Calculation Of Basic And Diluted Earnings Per Share Attributable To Stockholders	'
	The computation of basic and diluted earnings per share is as follows:
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
			(In thousands, except
			per share amounts)
	Net income		$	50,158	$	29,953	$	102,661	$	110,124
	Basic:
	Weighted average common shares outstanding		141,557		140,327		141,282		140,004
	Diluted:
	Dilutive effect of stock options		1,765		1,988		2,056		1,938
	Total weighted average diluted shares outstanding		143,322		142,315		143,338		141,942
	Anti-dilutive shares excluded from the diluted earnings per share calculation (1)		168		—		171		181
	Earnings per share:
	Basic earnings per share		$	0.35	$	0.21	$	0.73	$	0.79
	Diluted earnings per share		$	0.35	$	0.21	$	0.72	$	0.78
	-1	Impact of outstanding options to purchase shares of the Company’s Class A common stock were anti-dilutive because the options' exercise prices were greater than the average market price of the common shares and were excluded from the calculation of diluted earnings per share.

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Summary Of Financial Information By Segments	'
	Set forth in the tables below is certain financial information with respect to the Company’s reportable segments (in thousands):
		Operating Revenue
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Truckload	$	570,931		$	579,494		$	1,699,469		$	1,727,813
	Dedicated	238,025			184,550			654,776			546,427
	Central Refrigerated	100,448			115,339			314,122			332,979
	Intermodal	99,962			96,478			292,186			270,736
	Subtotal	1,009,366			975,861			2,960,553			2,877,955
	Non-reportable segment	80,122			63,982			239,279			207,954
	Intersegment eliminations	(14,608		)	(7,716		)	(40,608		)	(43,103		)
	Consolidated operating revenue	$	1,074,880		$	1,032,127		$	3,159,224		$	3,042,806
		Operating Income (Loss)
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Truckload	$	71,186		$	58,053		$	172,689		$	165,070
	Dedicated	23,692			20,508			56,334			63,725
	Central Refrigerated	3,238			3,422			9,320			13,803
	Intermodal	1,934			1,531			513			715
	Subtotal	100,050			83,514			238,856			243,313
	Non-reportable segment	(2,639		)	906			(1,253		)	11,091
	Consolidated operating income	$	97,411		$	84,420		$	237,603		$	254,404
		Depreciation and Amortization Expense
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Truckload	$	27,473		$	32,696		$	86,034		$	96,076
	Dedicated	13,890			11,711			39,965			33,439
	Central Refrigerated	3,175			2,877			9,195			10,676
	Intermodal	2,892			2,292			7,843			7,037
	Subtotal	47,430			49,576			143,037			147,228
	Non-reportable segment	6,939			8,678			22,298			22,776
	Consolidated depreciation and amortization expense	$	54,369		$	58,254		$	165,335		$	170,004

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Summary of accumulated other comprehensive income	'
	The following table reflects the components of accumulated other comprehensive loss (in thousands):
		Derivative Financial Instruments			Foreign Currency Transactions			Accumulated Other Comprehensive Loss
	Balance as of December 31, 2013	$	(6,245	)	$	83		$	(6,162	)
	Amounts reclassified from accumulated other comprehensive loss, net of income tax	2,728			—			2,728
	Other comprehensive income, net of income taxes	2,728			—			2,728
	Balance as of September 30, 2014	$	(3,517	)	$	83		$	(3,434	)
	(Amounts in parenthesis indicate debits, or loss).
Reclassifications out of accumulated other comprehensive income	'
	The following table presents details about reclassifications out of accumulated other comprehensive loss for the three and nine months ended September 30, 2014 and 2013 (in thousands):
		Amounts Reclassified from Accumulated Other Comprehensive Loss
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013			Statements of Income Classification
	Cash flow hedging activities:
	Losses on interest rate swaps	$	1,642		$	1,106		$	4,438		$	2,065		Derivative interest expense
	Income tax benefit	(633		)	(431		)	(1,710		)	(805		)	Income tax expense
		$	1,009		$	675		$	2,728		$	1,260		Net income

Guarantor_Condensed_Consolidat1

Guarantor Condensed Consolidating Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2014
Text Block [Abstract]	'
Condensed Consolidating Balance Sheet	'
	Condensed consolidating balance sheet as of September 30, 2014 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Cash and cash equivalents	$	—		$	—		$	61,972		$	8,324		$	—		$	70,296
	Restricted cash	—			—			—			51,511			—			51,511
	Restricted investments, held to maturity, amortized cost	—			—			—			25,091			—			25,091
	Accounts receivable, net	—			—			29,566			428,333			(3,711		)	454,188
	Intercompany receivable	119,902			315,358			—			56,589			(491,849		)	—
	Other current assets	10,473			—			121,424			16,366			(5,485		)	142,778
	Total current assets	130,375			315,358			212,962			586,214			(501,045		)	743,864
	Property and equipment, net	—			—			1,447,056			36,887			—			1,483,943
	Investment in subsidiaries	349,664			946,319			1,040,096			—			(2,336,079		)	—
	Other assets	11,360			1,809			62,185			3,637			(31,953		)	47,038
	Intangible assets, net	—			—			295,060			9,076			—			304,136
	Goodwill	—			—			246,977			6,279			—			253,256
	Total assets	$	491,399		$	1,263,486		$	3,304,336		$	642,093		$	(2,869,077	)	$	2,832,237
	Intercompany payable	$	—		$	5,485		$	491,849		$	—		$	(497,334	)	$	—
	Current portion of long-term debt and obligations under capital leases	609			—			71,877			23,112			(19,460		)	76,138
	Other current liabilities	9,205			14,106			335,313			21,463			(3,711		)	376,376
	Total current liabilities	9,814			19,591			899,039			44,575			(520,505		)	452,514
	Long-term debt and obligations under capital leases, less current portion	—			423,596			562,776			3,061			(709		)	988,724
	Deferred income taxes	—			—			452,525			7,499			(11,784		)	448,240
	Revolving line of credit	—			—			82,000			—			—			82,000
	Securitization of accounts receivable	—			—			—			315,000			—			315,000
	Other liabilities	—			—			91,267			52,008			—			143,275
	Total liabilities	9,814			443,187			2,087,607			422,143			(532,998		)	2,429,753
	Total stockholders’ equity	481,585			820,299			1,216,729			219,950			(2,336,079		)	402,484
	Total liabilities and stockholders’ equity	$	491,399		$	1,263,486		$	3,304,336		$	642,093		$	(2,869,077	)	$	2,832,237
	Condensed consolidating balance sheet as of December 31, 2013 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Cash and cash equivalents	$	—		$	—		$	54,564		$	4,614		$	—		$	59,178
	Restricted cash	—			—			—			50,833			—			50,833
	Restricted investments, held to maturity, amortized cost	—			—			—			25,814			—			25,814
	Accounts receivable, net	—			—			28,997			394,044			(4,605		)	418,436
	Intercompany receivable	85,498			400,569			—			55,799			(541,866		)	—
	Other current assets	37,022			—			127,775			16,270			(1,296		)	179,771
	Total current assets	122,520			400,569			211,336			547,374			(547,767		)	734,032
	Property and equipment, net	—			—			1,407,414			40,393			—			1,447,807
	Investment in subsidiaries	239,432			870,599			983,289			—			(2,093,320		)	—
	Other assets	11,780			2,355			83,967			4,639			(45,575		)	57,166
	Intangible assets, net	—			—			307,092			9,655			—			316,747
	Goodwill	—			—			246,977			6,279			—			253,256
	Total assets	$	373,732		$	1,273,523		$	3,240,075		$	608,340		$	(2,686,662	)	$	2,809,008
	Intercompany payable	$	—		$	1,296		$	542,772		$	—		$	(544,068	)	$	—
	Current portion of long-term debt and obligations under capital leases	6,036			—			64,970			36,626			(32,576		)	75,056
	Other current liabilities	2,281			6,389			277,921			27,170			(4,449		)	309,312
	Total current liabilities	8,317			7,685			885,663			63,796			(581,093		)	384,368
	Long-term debt and obligations under capital leases, less current portion	—			493,825			747,918			5,046			(25		)	1,246,764
	Deferred income taxes	—			—			487,670			8,754			(12,224		)	484,200
	Securitization of accounts receivable	—			—			—			264,000			—			264,000
	Revolving line of credit	—			—			17,000			—			—			17,000
	Other liabilities	—			—			73,774			55,315			—			129,089
	Total liabilities	8,317			501,510			2,212,025			396,911			(593,342		)	2,525,421
	Total stockholders’ equity	365,415			772,013			1,028,050			211,429			(2,093,320		)	283,587
	Total liabilities and stockholders’ equity	$	373,732		$	1,273,523		$	3,240,075		$	608,340		$	(2,686,662	)	$	2,809,008
Condensed Consolidating Statement Of Operations	'
	Condensed consolidating statement of income for the three months ended September 30, 2014 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Operating revenue	$	—		$	—		$	1,055,901		$	37,149		$	(18,170	)	$	1,074,880
	Operating expenses:
	Salaries, wages and employee benefits	1,540			—			230,835			7,630			—			240,005
	Operating supplies and expenses	1,122			2			86,546			3,444			(2,655		)	88,459
	Fuel	—			—			142,837			6,262			—			149,099
	Purchased transportation	—			—			338,611			1,663			(12,162		)	328,112
	Rental expense	—			—			59,049			771			(165		)	59,655
	Insurance and claims	1,739			—			29,786			9,336			(3,188		)	37,673
	Depreciation and amortization of property and equipment	—			—			52,981			1,388			—			54,369
	Amortization of intangibles	—			—			4,011			193			—			4,204
	Impairments	—			—			2,308			—			—			2,308
	Gain on disposal of property and equipment	—			—			(11,620		)	(8		)	—			(11,628		)
	Communication and utilities	—			—			6,964			357			—			7,321
	Operating taxes and licenses	—			—			15,499			2,393			—			17,892
	Total operating expenses	4,401			2			957,807			33,429			(18,170		)	977,469
	Operating income (loss)	(4,401		)	(2		)	98,094			3,720			—			97,411
	Interest expense, net	7			11,306			8,994			1,044			—			21,351
	Other (income) expenses, net	(53,488		)	(33,619		)	(29,178		)	(3,470		)	121,767			2,012
	Income before income taxes	49,080			22,311			118,278			6,146			(121,767		)	74,048
	Income tax expense (benefit)	(1,078		)	(5,250		)	28,319			1,899			—			23,890
	Net income (loss)	$	50,158		$	27,561		$	89,959		$	4,247		$	(121,767	)	$	50,158
	Condensed consolidating statement of income for the three months ended September 30, 2013 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Operating revenue	$	—		$	—		$	1,015,440		$	38,205		$	(21,518	)	$	1,032,127
	Operating expenses:
	Salaries, wages and employee benefits	1,081			—			211,717			7,358			—			220,156
	Operating supplies and expenses	552			2			84,036			2,931			(2,317		)	85,204
	Fuel	—			—			154,478			6,083			—			160,561
	Purchased transportation	—			—			328,677			2,274			(12,630		)	318,321
	Rental expense	—			—			45,639			781			(158		)	46,262
	Insurance and claims	—			—			28,956			12,567			(6,413		)	35,110
	Depreciation and amortization of property and equipment	—			—			57,032			1,222			—			58,254
	Amortization of intangibles	—			—			4,011			193			—			4,204
	Gain on disposal of property and equipment	—			—			(5,622		)	3			—			(5,619		)
	Communication and utilities	—			—			6,444			235			—			6,679
	Operating taxes and licenses	—			—			16,034			2,541			—			18,575
	Total operating expenses	1,633			2			931,402			36,188			(21,518		)	947,707
	Operating income (loss)	(1,633		)	(2		)	84,038			2,017			—			84,420
	Interest expense, net	—			12,913			11,780			763			—			25,456
	Other (income) expenses, net	(34,203		)	(31,083		)	(20,238		)	(2,574		)	90,953			2,855
	Income (loss) before income taxes	32,570			18,168			92,496			3,828			(90,953		)	56,109
	Income tax expense (benefit)	2,819			(4,853		)	27,007			1,183			—			26,156
	Net income (loss)	$	29,751		$	23,021		$	65,489		$	2,645		$	(90,953	)	$	29,953
	Condensed consolidating statement of income for the nine months ended September 30, 2014 (in thousands)
		Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Services			Subsidiaries			Guarantor			for
		Company			Holdings, Inc.						Subsidiaries			Consolidation
		(Parent)			(Issuer)
	Operating revenue	$	—		$	—		$	3,099,650		$	114,877		$	(55,303	)	$	3,159,224
	Operating expenses:
	Salaries, wages and employee benefits	3,892			—			680,266			23,306			—			707,464
	Operating supplies and expenses	2,485			3			247,636			11,368			(8,131		)	253,361
	Fuel	—			—			438,464			20,334			—			458,798
	Purchased transportation	—			—			1,017,617			6,715			(36,802		)	987,530
	Rental expense	—			—			165,565			2,437			(493		)	167,509
Insurance and claims	5,134			—			90,178			28,007			(9,877		)	113,442
Depreciation and amortization of property and equipment	—			—			161,222			4,113			—			165,335
Amortization of intangibles	—			—			12,032			579			—			12,611
Impairments	—			—			2,308			—			—			2,308
Gain on disposal of property and equipment	—			—			(23,091		)	(8		)	—			(23,099		)
Communication and utilities	—			—			21,285			922			—			22,207
Operating taxes and licenses	62			—			46,079			8,014			—			54,155
Total operating expenses	11,573			3			2,859,561			105,787			(55,303		)	2,921,621
Operating income (loss)	(11,573		)	(3		)	240,089			9,090			—			237,603
Interest expense, net	56			36,005			28,319			3,462			—			67,842
Other (income) expenses, net	(110,231		)	(68,129		)	(46,041		)	(10,017		)	244,759			10,341
Income (loss) before income taxes	98,602			32,121			257,811			15,645			(244,759		)	159,420
Income tax expense (benefit)	(4,059		)	(16,164		)	71,860			5,122			—			56,759
Net income (loss)	$	102,661		$	48,285		$	185,951		$	10,523		$	(244,759	)	$	102,661
Condensed consolidating statement of income for the nine months ended September 30, 2013 (in thousands)
	Swift			Swift			Guarantor			Non-			Eliminations			Consolidated
	Transportation			Services			Subsidiaries			Guarantor			for
	Company			Holdings, Inc.						Subsidiaries			Consolidation
	(Parent)			(Issuer)
Operating revenue	$	—		$	—		$	2,989,063		$	117,644		$	(63,901	)	$	3,042,806
Operating expenses:
Salaries, wages and employee benefits	2,459			—			645,784			22,250			—			670,493
Operating supplies and expenses	1,682			6			229,568			10,960			(5,949		)	236,267
Fuel	—			—			470,395			19,168			—			489,563
Purchased transportation	—			—			948,073			8,892			(38,371		)	918,594
Rental expense	—			—			127,789			2,578			(486		)	129,881
Insurance and claims	—			—			85,249			34,091			(19,095		)	100,245
Depreciation and amortization of property and equipment	—			—			166,582			3,422			—			170,004
Amortization of intangibles	—			—			12,032			579			—			12,611
Gain on disposal of property and equipment	—			—			(13,634		)	24			—			(13,610		)
Communication and utilities	—			—			18,486			659			—			19,145
Operating taxes and licenses	—			—			47,203			8,006			—			55,209
Total operating expenses	4,141			6			2,737,527			110,629			(63,901		)	2,788,402
Operating income (loss), net	(4,141		)	(6		)	251,536			7,015			—			254,404
Interest expense, net	—			38,740			34,534			3,263			—			76,537
Other (income) expenses	(78,546		)	(76,531		)	(51,509		)	(7,920		)	214,443			(63		)
Income before income taxes	74,405			37,785			268,511			11,672			(214,443		)	177,930
Income tax expense (benefit)	(21,629		)	(14,435		)	99,343			4,527			—			67,806
Net income (loss)	$	96,034		$	52,220		$	169,168		$	7,145		$	(214,443	)	$	110,124
Condensed Consolidating Statement Of Comprehensive Income	'
	Condensed consolidating statement of comprehensive income for the three months ended September 30, 2014 (in thousands)
		Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
		Company			(Issuer)						Subsidiaries			Consolidation
		(Parent)
	Net income	$	50,158		$	27,561		$	89,959		$	4,247		$	(121,767	)	$	50,158
	Other comprehensive income before income taxes:
	Accumulated losses on derivatives reclassified to derivative interest expense	—			—			1,642			—			—			1,642
	Other comprehensive income before income taxes	—			—			1,642			—			—			1,642
	Income tax effect of items within other comprehensive income	—			—			(633		)	—			—			(633		)
	Total comprehensive income	$	50,158		$	27,561		$	90,968		$	4,247		$	(121,767	)	$	51,167
	Condensed consolidating statement of comprehensive income for the three months ended September 30, 2013 (in thousands)
		Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
		Company			(Issuer)						Subsidiaries			Consolidation
		(Parent)
	Net income (loss)	$	29,751		$	23,021		$	65,489		$	2,645		$	(90,953	)	$	29,953
	Other comprehensive income before income taxes:
	Accumulated losses on derivatives reclassified to derivative interest expense	—			—			1,106			—			—			1,106
	Other comprehensive income before income taxes	—			—			1,106			—			—			1,106
	Income tax effect of items within other comprehensive income	—			—			(326		)	—			—			(326		)
	Total comprehensive income (loss)	$	29,751		$	23,021		$	66,269		$	2,645		$	(90,953	)	$	30,733
Condensed Consolidating Statement Of Cash Flows	'
	ndensed consolidating statement of cash flows for the nine months ended September 30, 2014 (in thousands)
		Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
		Company			(Issuer)						Subsidiaries			Consolidation
		(Parent)
	Net cash provided by (used in) operating activities	$	30,214		$	(13,288	)	$	304,671		$	(28,784	)	$	—		$	292,813
	Cash flows from investing activities:
	Increase in restricted cash	—			—			—			(678		)	—			(678		)
	Change in restricted investments	—			—			—			364			—			364
	Proceeds from sale of property and equipment	—			—			116,638			34			—			116,672
	Capital expenditures	—			—			(210,488		)	(625		)	—			(211,113		)
	Payments received on notes receivable				—			3,759			—			—			3,759
	Expenditures on assets held for sale	—			—			(2,900		)	—			—			(2,900		)
	Payments received on assets held for sale	—			—			20,089			—			—			20,089
	Dividends from subsidiary	—			—			2,000			—			(2,000		)	—
	Payments received on equipment sale receivables	—			—			368			—			—			368
	Net cash used in investing activities	—			—			(70,534		)	(905		)	(2,000		)	(73,439		)
	Cash flows from financing activities:
	Proceeds from long-term debt	—			—			450,000			—			—			450,000
	Payment of deferred loan costs	—			—			(11,684		)	(100		)	—			(11,784		)
	Borrowings under accounts receivable securitization	—			—			—			100,000			—			100,000
	Repayment of long-term debt and capital leases	(5,427		)	(71,924		)	(691,666		)	(3,071		)	—			(772,088		)
	Net borrowings on revolving line of credit	—			—			65,000			—			—			65,000
	Repayment of accounts receivable securitization	—			—			—			(49,000		)	—			(49,000		)
	Dividends to parent	—			—			—			(2,000		)	2,000			—
	Net funding (to) from affiliates	(34,403		)	85,212			(38,379		)	(12,430		)	—			—
	Proceeds from exercise of stock options	7,587			—			—			—			—			7,587
	Income tax benefit from exercise of stock options	2,029			—			—			—			—			2,029
	Net cash (used in) provided by financing activities	(30,214		)	13,288			(226,729		)	33,399			2,000			(208,256		)
	Net increase in cash and cash equivalents	—			—			7,408			3,710			—			11,118
	Cash and cash equivalents at beginning of period	—			—			54,564			4,614			—			59,178
	Cash and cash equivalents at end of period	$	—		$	—		$	61,972		$	8,324		$	—		$	70,296
	Condensed consolidating statement of cash flows for the nine months ended September 30, 2013 (in thousands)
		Swift			Swift Services			Guarantor			Non-			Eliminations			Consolidated
		Transportation			Holdings, Inc.			Subsidiaries			Guarantor			for
		Company			(Issuer)						Subsidiaries			Consolidation
		(Parent)
	Net cash provided by (used in) operating activities	$	25,038		$	(8,081	)	$	359,079		$	(20,173	)	$	—		$	355,863
	Cash flows from investing activities:
	Decrease in restricted cash	—			—			—			1,302			—			1,302
	Change in restricted investments	—			—			—			(1,900		)	—			(1,900		)
	Proceeds from sale of property and equipment	—			—			75,663			149			—			75,812
	Capital expenditures	—			—			(231,701		)	(5,289		)	—			(236,990		)
	Payments received on notes receivable	—			—			2,775			—			—			2,775
	Expenditures on assets held for sale	—			—			(17,442		)	—			—			(17,442		)
	Payments received on assets held for sale	—			—			47,365			—			—			47,365
	Payments received on equipment sale receivables	—			—			1,266			—			—			1,266
	Dividends from subsidiary	—			—			6,800			—			(6,800		)	—
	Payments received on intercompany notes payable	—			—			3,399			—			(3,399		)	—
	Capital contribution to subsidiary	—			—			(1,160		)	—			1,160			—
	Acquisition of Central Refrigerated, net of debt repayment	—			—			(147,822		)	—			—			(147,822		)
	Net cash used in investing activities	—			—			(260,857		)	(5,738		)	(9,039		)	(275,634		)
	Cash flows from financing activities:
	Repayment of long-term debt and capital leases	—			—			(192,041		)	(7,449		)	—			(199,490		)
	Net borrowings on revolving line of credit	—			—			59,469			—			—			59,469
	Borrowings under accounts receivable securitization	—			—			—			180,000			—			180,000
	Repayment of accounts receivable securitization	—			—			—			(124,000		)	—			(124,000		)
	Proceeds from long-term debt	—			—			16,000			10,268			—			26,268
	Payment of deferred loan costs	—			—			(1,332		)	(851		)	—			(2,183		)
	Distribution to Central stockholders, pre-acquisition	—			—			(2,499		)	—			—			(2,499		)
	Issuance of Central loan receivable, pre-acquisition	—			—			(30,000		)	—			—			(30,000		)
	Proceeds from exercise of stock options	10,422			—			—			—			—			10,422
	Income tax benefit from exercise of stock options	(383		)	—			—			—			—			(383		)
Dividend to parent	—			—			—			(6,800		)	6,800			—
Capital contribution	—			—			—			1,160			(1,160		)	—
Repayment of intercompany notes payable	—			—			—			(3,399		)	3,399			—
Net funding (to) from affiliates	(35,077		)	8,081			53,479			(26,483		)	—			—
Net cash (used in) provided by financing activities	(25,038		)	8,081			(96,924		)	22,446			9,039			(82,396		)
Net increase (decrease) in cash and cash equivalents	—			—			1,298			(3,465		)	—			(2,167		)
Cash and cash equivalents at beginning of period	—			—			43,877			9,719			—			53,596
Cash and cash equivalents at end of period	$	—		$	—		$	45,175		$	6,254		$	—		$	51,429

Basis_Of_Presentation_Detail

Basis Of Presentation (Detail)	9 Months Ended
	Sep. 30, 2014
	Segment
	Vehicle
Accounting Policies [Abstract]	'
Number of reportable operating segment	4
Number of company operated national terminal network and tractor fleet	18,700
Number of tractors driven by company drivers	13,700
Number of owner-operator tractors	5,000
Number of fleet of trailers	60,300
Number of intermodal containers	8,900

Income_Taxes_Detail

Income Taxes (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Contingency [Line Items]	'	'	'	'
Effective tax rate	32.30%	46.60%	35.60%	38.10%
Increase (Decrease) In Expected Effective Tax Rate	6.20%	8.10%	2.90%	0.40%
Income tax expected tax rate	'	'	38.50%	'
Accrued interest and penalties	$1.20	'	$1.20	'
Tax years subject to examination	'	'	'2008 through 2012	'
Maximum [Member]	'	'	'	'
Income Tax Contingency [Line Items]	'	'	'	'
State of California and other state jurisdictions years	'	'	'2013	'

Investments_Amortized_Cost_Gro

Investments (Amortized Cost, Gross Unrealized Gains And Losses, Estimated Fair Value Of Fixed Maturity Securities) (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
	Securities	Securities
Schedule of Held-to-maturity Securities [Line Items]	'	'
Securities with unrealized losses for less than 12 months	13	15
SWFT_Duration of Securities in Unrealized Loss Position	'12 months	'
Maximum [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Contractual maturities of fixed maturity securities	'1 year	'
U.S. Corporate Securities [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Cost or Amortized Cost	21,960	20,197
Held-To-Maturity Securities, Accumulated Unrecognized Holding Gain	3	2
Held-To-Maturity Securities, Accumulated Unrecognized Holding Loss	3	7
Estimated Fair Value	21,960	20,192
Foreign Corporate Securities [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Cost or Amortized Cost	1,506	3,502
Held-To-Maturity Securities, Accumulated Unrecognized Holding Gain	0	0
Held-To-Maturity Securities, Accumulated Unrecognized Holding Loss	2	0
Estimated Fair Value	1,504	3,502
Negotiable Certificate Of Deposits [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Cost or Amortized Cost	1,625	2,115
Held-To-Maturity Securities, Accumulated Unrecognized Holding Gain	0	0
Held-To-Maturity Securities, Accumulated Unrecognized Holding Loss	1	1
Estimated Fair Value	1,624	2,114
Total Restricted Investments [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Cost or Amortized Cost	25,091	25,814
Held-To-Maturity Securities, Accumulated Unrecognized Holding Gain	3	2
Held-To-Maturity Securities, Accumulated Unrecognized Holding Loss	6	8
Estimated Fair Value	25,088	25,808

Intangible_Assets_Schedule_Of_

Intangible Assets (Schedule Of Intangible Assets) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Intangible Asset Excluding Goodwill [Line Items]	'	'
Intangible assets, net	$304,136	$316,747
Trade Name [Member]	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying value	181,037	181,037
Customer Relationship [Member]	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Finite-Lived Intangible Assets, Gross	275,324	275,324
Accumulated amortization	($152,225)	($139,614)

Intangible_Assets_Narrative_De

Intangible Assets (Narrative) (Detail) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2007

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

9-May-07

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Going Private Transaction [Member]

2007 Going private transaction [Member]

2007 Going private transaction [Member]

2007 Going private transaction [Member]

2007 Going private transaction [Member]

Customer Relationship [Member]

Customer Relationship [Member]

Customer Relationship [Member]

2007 Prior To Going Private Transaction [Member]

2007 Prior To Going Private Transaction [Member]

2007 Prior To Going Private Transaction [Member]

2007 Prior To Going Private Transaction [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Assets, Gross

'

'

'

'

$261,200

'

'

'

'

'

$275,324

$275,324

'

'

'

'

Acquisition calculated on declining balance

'

'

150.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful life of intangible assets in years

'

'

'

'

'

'

'

'

'

'

'15 years

'

'

'

'

'

Amortization period of intangible assets in years

'

'

'

'

'

'

'

'

'

'15 years

'

'

'

'

'

'

Amortization of Intangible Assets

$4,204

$4,204

$12,611

$12,611

'

$3,912

$3,912

$11,736

$11,736

'

'

'

$292

$292

$875

$875

Assets_Held_For_Sale_Schedule_

Assets Held For Sale (Schedule Of Assets Held For Sale) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'	'
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	$11,628	$5,619	$23,099	$13,610	'
Assets held for sale	5,752	'	5,752	'	19,268
Significant Acquisitions and Disposals, Transaction [Domain]	'	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'	'
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property	'	'	-2,000	'	'
Land And Facilities [Member]	'	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'	'
Assets held for sale	1,904	'	1,904	'	14,627
Revenue Equipment [Member]	'	'	'	'	'
Long Lived Assets Held-for-sale [Line Items]	'	'	'	'	'
Assets held for sale	$3,848	'	$3,848	'	$4,641

Assets_Held_For_Sale_Narrative

Assets Held For Sale (Narrative) (Detail) (USD $)	3 Months Ended	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
	property
Assets Held-for-sale, Long Lived [Abstract]	'	'
Period of time assets are expected to be sold, months	'	'12 months
Number of Properties Sold	4	'
Assets Held-for-sale, at Carrying Value	$12.90	$12.90

Debt_And_Financing_Transaction2

Debt And Financing Transactions (Schedule Of Long-Term Debt Outstanding) (Detail) (USD $)	Sep. 30, 2014	Jun. 09, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'	'
Total	$878,959	'	$1,150,305
Other Long-term Debt	8,319	'	17,480
Less: current portion	26,833	'	11,387
Long-term Debt, Excluding Current Maturities	852,126	'	1,138,918
Senior Second Priority Secured Notes Due November 15, 2018 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total	423,596	'	493,825
Debt Instrument, Unamortized Discount	'	'	'
2014 Agreement, Term Loan B [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt Instrument, Unamortized Discount	'	'	'
First Lien Term Loan B 1 [Member] | Second Amended Agreement [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total	0	'	229,000
First Lien Term Loan B 2 [Member] | Second Amended Agreement [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total	0	'	410,000
Secured Debt [Member] | 2014 Agreement, Term Loan A [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total	50,000	500,000	0
Secured Debt [Member] | 2014 Agreement, Term Loan B [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Total	$397,044	$400,000	$0

Debt_And_Financing_Transaction3

Debt And Financing Transactions (Narrative) (Detail) (USD $)

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

9 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

21 Months Ended

24 Months Ended

3 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Jun. 09, 2014

Sep. 30, 2014

Jun. 09, 2014

Jun. 09, 2014

Sep. 30, 2014

Jun. 09, 2014

Jun. 09, 2014

Jun. 09, 2014

Sep. 30, 2014

Sep. 30, 2014

Jun. 09, 2014

Dec. 31, 2013

Jun. 09, 2014

Jun. 30, 2014

Sep. 30, 2014

Jun. 09, 2014

Dec. 31, 2013

Jun. 09, 2014

Dec. 31, 2010

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Jun. 07, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Mar. 07, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Mar. 07, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2016

Mar. 31, 2019

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Minimum [Member]

Maximum [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Credit Facility [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan B [Member]

2014 Agreement, Term Loan B [Member]

2014 Agreement, Term Loan B [Member]

2014 Agreement, Term Loan B [Member]

2014 Agreement, Term Loan B [Member]

Senior Second Priority Secured Notes [Member]

Senior Second Priority Secured Notes [Member]

Senior Second Priority Secured Notes [Member]

2012 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

2013 Agreement [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Scenario, Forecast [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Letter of Credit [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Workers' Compensation And Self-Insurance Liability [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

First Lien Term Loan B 2 [Member]

London Interbank Offered Rate (LIBOR) [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

First Lien Term Loan B 1 [Member]

First Lien Term Loan B 1 [Member]

First Lien Term Loan B 1 [Member]

First Lien Term Loan B 1 [Member]

First Lien Term Loan B 2 [Member]

First Lien Term Loan B 2 [Member]

First Lien Term Loan B 2 [Member]

First Lien Term Loan B 2 [Member]

First Lien Term Loan B 2 [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan A [Member]

2014 Agreement, Term Loan B [Member]

2014 Agreement, Term Loan B [Member]

Base Rate [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Minimum [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Minimum [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Base Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Base Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

Base Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Excluding Current Maturities

$852,126,000

'

$852,126,000

'

$1,138,918,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred loan costs

12,500,000

'

12,500,000

'

8,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Variable interest rate

'

'

'

'

'

'

'

'

'

'

0.50%

'

1.50%

2.25%

1.25%

'

'

'

'

2.00%

'

'

'

'

3.00%

'

'

'

'

'

'

'

3.00%

2.00%

3.25%

2.25%

'

'

'

2.75%

'

'

'

3.00%

'

'

'

1.50%

2.25%

2.75%

3.00%

Minimum LIBOR rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

0.0075

'

'

'

'

'

'

0.01

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit agreement, maximum borrowing capacity

'

'

'

'

'

'

'

500,000,000

'

450,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

350,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Frequency of periodic payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'quarterly

'

'

'

'

'quarterly

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal periodic payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,600,000

11,300,000

'

'

'

'

Letters of credit amount outstanding

'

'

'

'

'

'

'

'

82,000,000

'

'

'

'

'

'

106,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Available balance under revolving line of credit

'

'

'

'

'

'

'

'

261,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding letters of credit fees incurred

'

'

'

'

'

0.25%

0.35%

'

0.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Face value of second priority senior notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000,000

'

'

'

'

'

'

'

'

'

'

'

'

229,000,000

'

'

'

371,000,000

'

'

'

'

'

'

'

'

Rate at which interest accrues

'

'

'

'

'

'

'

'

2.15%

'

'

2.00%

'

'

'

'

2.15%

'

'

'

'

3.75%

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of senior notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

490,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Original issue discount on debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchased Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

71,900,000

71,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption premium

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.0905

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Repayments of long-term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gains (losses) on extinguishment of debt

-2,854,000

-496,000

-12,757,000

-5,540,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-2,900,000

-7,600,000

'

-5,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt

$878,959,000

'

$878,959,000

'

$1,150,305,000

'

'

'

'

'

'

'

'

'

'

'

$50,000,000

$500,000,000

$0

'

'

$397,044,000

$400,000,000

$0

'

'

'

'

'

'

'

'

'

'

'

'

$0

$229,000,000

'

'

$0

$410,000,000

'

'

'

'

'

'

'

'

'

Accounts_Receivable_Securitiza1

Accounts Receivable Securitization (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2013
			2013 RSA Borrowing [Member]	2013 RSA Borrowing [Member]	2013 RSA Borrowing [Member]	2011 RSA Borrrowing [Member]	2011 RSA Borrrowing [Member]
Servicing Liabilities at Fair Value [Line Items]	'	'	'	'	'	'	'
Receivables Sale Agreement Borrowing Capacity	'	'	$375,000,000	$375,000,000	'	'	'
Receivables Sale Agreement Borrowing Capacity, $325M	'	'	325	325	'	'	'
RSA, terminates date	'	'	'	13-Jul-16	'	'	'
RSA, program fee	'	'	900,000	2,500,000	'	800,000	2,300,000
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	315,000,000	264,000,000	315,000,000	315,000,000	264,000,000	'	'
RSA, borrowing base	'	'	336,800,000	336,800,000	300,800,000	'	'
RSA, remaining borrowing	'	'	$21,800,000	$21,800,000	'	'	'
Interest rate	'	'	'	0.95%	'	'	'
Unused capacity fee	'	'	'	0.35%	'	'	'

Capital_Leases_Detail

Capital Leases (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Leases [Abstract]	'	'
Present value of Obligations under capital leases	$185.90	$171.50
Capital leases obligations, current	49.3	63.7
Revenue equipment cost	298.3	'
Accumulated amortization	$71.80	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Detail) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Derivatives, Fair Value [Line Items]	'
Interest rate swaps maturity date	1-Jul-15
Deferred losses on derivatives in accumulated OCI expected to be reclassified to earnings within next 12 months	$5.80
Interest Rate Swaps [Member]	'
Derivatives, Fair Value [Line Items]	'
Number of interest rate derivatives held	2
Notional amount of interest rate swap agreements	$350
Interest rate swaps maturity date	1-Jul-15
Interest rate swaps agreement effective date	1-Jan-13

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Classification Of Gains And Losses On Interest Rate Derivative Contracts Designated As Hedging Instruments) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'	'	'
Amount of loss recognized in OCI on derivatives, net-of-tax (effective portion)	'	$0	$0	$145
Amount of loss reclassified from accumulated OCI into income as "Derivative interest expense" (effective portion)	$1,642	$1,106	$4,438	$2,065

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Pre-Tax Gains And Losses On Interest Rate Derivative Contracts De-Designated As Hedging Instruments) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'	'	'	'
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$114	$359	$589	$494

Fair_Value_Measurement_Carryin

Fair Value Measurement (Carrying Amounts And Estimated Fair Values Of Financial Instruments) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Carrying Value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Assets	$25,091	$25,814
Carrying Value [Member] | Senior Second Priority Secured Notes [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	423,596	493,825
Carrying Value [Member] | Securitization Of Accounts Receivable [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	315,000	264,000
Carrying Value [Member] | 2014 Agreement, Term Loan A [Member] | First Lien Term Loan A [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	50,000	0
Carrying Value [Member] | 2014 Agreement, Term Loan B [Member] | First Lien Term Loan B [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	397,044	0
Carrying Value [Member] | (2013 Agreement) [Member] | First Lien Term Loan B 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	0	229,000
Carrying Value [Member] | (2013 Agreement) [Member] | First Lien Term Loan B 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	0	410,000
Estimated Fair Value [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Assets	25,088	25,808
Estimated Fair Value [Member] | Senior Second Priority Secured Notes [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	445,305	549,059
Estimated Fair Value [Member] | Securitization Of Accounts Receivable [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	315,000	264,000
Estimated Fair Value [Member] | 2014 Agreement, Term Loan A [Member] | First Lien Term Loan A [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	50,000	'
Estimated Fair Value [Member] | 2014 Agreement, Term Loan B [Member] | First Lien Term Loan B [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	395,309	'
Estimated Fair Value [Member] | (2013 Agreement) [Member] | First Lien Term Loan B 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	0	230,031
Estimated Fair Value [Member] | (2013 Agreement) [Member] | First Lien Term Loan B 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities	$0	$412,358

Fair_Value_Measurement_Liabili

Fair Value Measurement (Liabilities That Were Measured At Estimated Fair Value On Recurring Basis) (Detail) (Recurring [Member], USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Total Estimated Fair Value [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Interest rate swaps	$7,815	$11,768
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Interest rate swaps	0	0
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Interest rate swaps	7,815	11,768
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Interest rate swaps	$0	$0

Earnings_Per_Share_Calculation

Earnings Per Share (Calculation Of Basic And Diluted Earnings Per Share Attributable To Stockholders) (Detail) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Earnings Per Share [Abstract]	'		'		'		'
Net income	$50,158		$29,953		$102,661		$110,124
Basic:	'		'		'		'
Weighted average common shares outstanding	141,557,000		140,327,000		141,282,000		140,004,000
Diluted:	'		'		'		'
Dilutive effect of stock options	1,765,000		1,988,000		2,056,000		1,938,000
Total weighted average diluted shares outstanding	143,322,000		142,315,000		143,338,000		141,942,000
Anti-dilutive shares excluded from the diluted earnings per share calculation	168,000	[1]	0	[1]	171,000	[1]	181,000	[1]
Earnings per share:	'		'		'		'
Basic earnings per share	$0.35		$0.21		$0.73		$0.79
Diluted earnings per share	$0.35		$0.21		$0.72		$0.78
Options outstanding	4,747,586		5,451,280		4,747,586		5,451,280
[1]	Impact of outstanding options to purchase shares of the Companybs ClassB A common stock were anti-dilutive because the options' exercise prices were greater than the average market price of the common shares and were excluded from the calculation of diluted earnings per share.

Contingencies_Detail

Contingencies (Detail) (USD $)

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

1 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2014

Jan. 30, 2004

Sep. 30, 2014

Dec. 22, 2009

Sep. 30, 2014

Mar. 22, 2010

Sep. 30, 2014

Jul. 12, 2011

Sep. 30, 2014

Sep. 09, 2011

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Apr. 17, 2009

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

2004 Owner-Operator Class Action Litigation [Member]

2004 Owner-Operator Class Action Litigation [Member]

Owner-Operator Misclassification Class Action Litigation [Member]

Owner-Operator Misclassification Class Action Litigation [Member]

California Wage, Meal And Rest Employee Class Action [Member]

California Wage, Meal And Rest Employee Class Action [Member]

California And Oregon Minimum Wage Class Action [Member]

California And Oregon Minimum Wage Class Action [Member]

Washington Overtime Class Action [Member]

Washington Overtime Class Action [Member]

Utah minimum wage collective action [Member]

Utah collective and individual arbitration [Member] [Member]

California Minimum Wage Class Action [Member]

Environmental Notice [Member]

Environmental Notice [Member]

2013 Environmental Notice [Member] [Member]

Other environmental [Member]

LawSuits

LawSuits

LawSuits

LawSuits

LawSuits

LawSuits

LawSuits

Loss Contingencies [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lawsuit filing date

'September 25, 2014

'

'January 30, 2004

'

'December 22, 2009

'

'MarchB 22, 2010

'

'July 12, 2011

'

'SeptemberB 9, 2011

'October 8, 2013

'June 1, 2012

'NovemberB 7, 2013

'

'AprilB 17, 2009

'May 14, 2013

'

Loss contingency, name of plaintiffs

'Lawrence Peck

'

'Leonel Garza

'

'John Doe 1 and Joseph Sheer

'

'John Burnell

'

'Simona Montalvo

'

'Troy Slack

'Jacob Roberts

'Gabriel Cilluffo, Kevin Shire and Bryan Ratterree

'Jorge Calix

'

'Lower Willamette Group

'

'

Number of class action law suits filed

'

1

'

1

'

1

'

1

'

1

'

'

'

'

1

'

1

'

Potentially responsible parties

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'250

'

'

Loss Contingency, Range of Possible Loss, Minimum

$0.30

'

'

'

'

'

'

'

$1

'

'

'

'

'

'

'

'

'

Loss Contingency, Range of Possible Loss, Maximum

$0.50

'

'

'

'

'

'

'

$1.50

'

'

'

'

'

'

'

'

$0.60

Segment_Information_Narrative_

Segment Information (Narrative) (Detail)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
	Segment
Segment Reporting [Abstract]	'	'
Number of reportable operating segments	4	'
Percentage of foreign operations total revenue	5.00%	5.00%

Segment_Information_Summary_Of

Segment Information (Summary Of Financial Information By Segments) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	$97,411	$84,420	$237,603	$254,404
Revenues	1,074,880	1,032,127	3,159,224	3,042,806
Consolidated depreciation and amortization expense	54,369	58,254	165,335	170,004
Trucking [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	'	'	172,689	165,070
Revenues	'	'	1,699,469	1,727,813
Consolidated depreciation and amortization expense	'	'	86,034	96,076
Dedicated Trucking [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	'	'	56,334	63,725
Revenues	'	'	654,776	546,427
Consolidated depreciation and amortization expense	'	'	39,965	33,439
Rail Intermodal [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	'	'	513	715
Revenues	'	'	292,186	270,736
Consolidated depreciation and amortization expense	'	'	7,843	7,037
Subtotal [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	'	'	238,856	243,313
Revenues	'	'	2,960,553	2,877,955
Consolidated depreciation and amortization expense	'	'	143,037	147,228
Non Reportable Segments [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	'	'	-1,253	11,091
Revenues	'	'	239,279	207,954
Consolidated depreciation and amortization expense	'	'	22,298	22,776
Intersegment Eliminations [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Revenues	'	'	-40,608	-43,103
Dedicated Trucking [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	23,692	20,508	'	'
Revenues	238,025	184,550	'	'
Consolidated depreciation and amortization expense	13,890	11,711	'	'
Trucking [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	71,186	58,053	'	'
Revenues	570,931	579,494	'	'
Consolidated depreciation and amortization expense	27,473	32,696	'	'
Intersegment Eliminations [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Revenues	-14,608	-7,716	'	'
Non Reportable Segments [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	-2,639	906	'	'
Revenues	80,122	63,982	'	'
Consolidated depreciation and amortization expense	6,939	8,678	'	'
Subtotal [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	100,050	83,514	'	'
Revenues	1,009,366	975,861	'	'
Consolidated depreciation and amortization expense	47,430	49,576	'	'
CRS Refrigerated [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	3,238	3,422	9,320	13,803
Revenues	100,448	115,339	314,122	332,979
Consolidated depreciation and amortization expense	3,175	2,877	9,195	10,676
Rail Intermodal [Member]	'	'	'	'
Segment Information [Line Items]	'	'	'	'
Operating Income (Loss)	1,934	1,531	'	'
Revenues	99,962	96,478	'	'
Consolidated depreciation and amortization expense	$2,892	$2,292	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Components of AOCI) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Balance at beginning of period	'	'	($6,162)	'
Amounts reclassified from accumulated other comprehensive loss, net of income tax	'	'	2,728	'
Other comprehensive income, net of income taxes	1,009	780	2,728	1,376
Balance at end of period	-3,434	'	-3,434	'
Derivative Financial Instruments [Member]	'	'	'	'
Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Balance at beginning of period	'	'	-6,245	'
Amounts reclassified from accumulated other comprehensive loss, net of income tax	'	'	2,728	'
Other comprehensive income, net of income taxes	'	'	2,728	'
Balance at end of period	-3,517	'	-3,517	'
Foreign Currency Transactions [Member]	'	'	'	'
Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Balance at beginning of period	'	'	83	'
Amounts reclassified from accumulated other comprehensive loss, net of income tax	'	'	0	'
Other comprehensive income, net of income taxes	'	'	0	'
Balance at end of period	$83	'	$83	'

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Summary of Reclassifications out of AOCI) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Derivative interest expense	$1,756	$1,465	$5,027	$2,559
Income tax expense (benefit)	23,890	26,156	56,759	67,806
Net income (loss)	50,158	29,953	102,661	110,124
Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Net income (loss)	-1,009	-675	-2,728	-1,260
Derivative Financial Instruments [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]	'	'	'	'
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Derivative interest expense	1,642	1,106	4,438	2,065
Income tax expense (benefit)	($633)	($431)	($1,710)	($805)

Guarantor_Condensed_Consolidat2

Guarantor Condensed Consolidating Financial Statements (Condensed Consolidating Balance Sheet) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	$70,296	$59,178	$51,429	$53,596
Restricted cash	51,511	50,833	'	'
Restricted investments, held to maturity, amortized cost	25,091	25,814	'	'
Accounts receivable, net	454,188	418,436	'	'
Due from Affiliate, Current	'	'	'	'
Other current assets	'	'	'	'
Total current assets	743,864	734,032	'	'
Property and equipment, net	1,483,943	1,447,807	'	'
Investment in subsidiaries	'	'	'	'
Other assets	47,038	57,166	'	'
Intangible assets, net	304,136	316,747	'	'
Goodwill	253,256	253,256	'	'
Total assets	2,832,237	2,809,008	'	'
Due to Affiliate, Current	'	'	'	'
Current portion of long-term debt and obligations under capital leases	76,138	75,056	'	'
Other current liabilities	'	'	'	'
Total current liabilities	452,514	384,368	'	'
Long-term debt and obligations under capital leases, less current portion	988,724	1,246,764	'	'
Deferred income taxes	448,240	484,200	'	'
Revolving line of credit	82,000	17,000	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	315,000	264,000	'	'
Self Insurance Reserve	'	'	'	'
Total liabilities	2,429,753	2,525,421	'	'
Total stockholdersb equity	402,484	283,587	'	'
Total liabilities and stockholdersb equity	2,832,237	2,809,008	'	'
Condensed Consolidated Total [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	70,296	59,178	51,429	53,596
Restricted cash	51,511	50,833	'	'
Restricted investments, held to maturity, amortized cost	25,091	25,814	'	'
Accounts receivable, net	454,188	418,436	'	'
Due from Affiliate, Current	0	0	'	'
Other current assets	142,778	179,771	'	'
Total current assets	743,864	734,032	'	'
Property and equipment, net	1,483,943	1,447,807	'	'
Investment in subsidiaries	0	0	'	'
Other assets	47,038	57,166	'	'
Intangible assets, net	304,136	316,747	'	'
Goodwill	253,256	253,256	'	'
Total assets	2,832,237	2,809,008	'	'
Due to Affiliate, Current	0	0	'	'
Current portion of long-term debt and obligations under capital leases	76,138	75,056	'	'
Other current liabilities	376,376	309,312	'	'
Total current liabilities	452,514	384,368	'	'
Long-term debt and obligations under capital leases, less current portion	988,724	1,246,764	'	'
Deferred income taxes	448,240	484,200	'	'
Revolving line of credit	82,000	17,000	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	315,000	264,000	'	'
Self Insurance Reserve	143,275	129,089	'	'
Total liabilities	2,429,753	2,525,421	'	'
Total stockholdersb equity	402,484	283,587	'	'
Total liabilities and stockholdersb equity	2,832,237	2,809,008	'	'
Eliminations For Consolidation [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0	'	'
Restricted investments, held to maturity, amortized cost	0	0	'	'
Accounts receivable, net	-3,711	-4,605	'	'
Due from Affiliate, Current	-491,849	-541,866	'	'
Other current assets	-5,485	-1,296	'	'
Total current assets	-501,045	-547,767	'	'
Property and equipment, net	0	0	'	'
Investment in subsidiaries	-2,336,079	-2,093,320	'	'
Other assets	-31,953	-45,575	'	'
Intangible assets, net	0	0	'	'
Goodwill	0	0	'	'
Total assets	-2,869,077	-2,686,662	'	'
Due to Affiliate, Current	-497,334	-544,068	'	'
Current portion of long-term debt and obligations under capital leases	-19,460	-32,576	'	'
Other current liabilities	-3,711	-4,449	'	'
Total current liabilities	-520,505	-581,093	'	'
Long-term debt and obligations under capital leases, less current portion	-709	-25	'	'
Deferred income taxes	-11,784	-12,224	'	'
Revolving line of credit	0	0	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0	'	'
Self Insurance Reserve	0	0	'	'
Total liabilities	-532,998	-593,342	'	'
Total stockholdersb equity	-2,336,079	-2,093,320	'	'
Total liabilities and stockholdersb equity	-2,869,077	-2,686,662	'	'
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	8,324	4,614	6,254	9,719
Restricted cash	51,511	50,833	'	'
Restricted investments, held to maturity, amortized cost	25,091	25,814	'	'
Accounts receivable, net	428,333	394,044	'	'
Due from Affiliate, Current	56,589	55,799	'	'
Other current assets	16,366	16,270	'	'
Total current assets	586,214	547,374	'	'
Property and equipment, net	36,887	40,393	'	'
Investment in subsidiaries	0	0	'	'
Other assets	3,637	4,639	'	'
Intangible assets, net	9,076	9,655	'	'
Goodwill	6,279	6,279	'	'
Total assets	642,093	608,340	'	'
Due to Affiliate, Current	0	0	'	'
Current portion of long-term debt and obligations under capital leases	23,112	36,626	'	'
Other current liabilities	21,463	27,170	'	'
Total current liabilities	44,575	63,796	'	'
Long-term debt and obligations under capital leases, less current portion	3,061	5,046	'	'
Deferred income taxes	7,499	8,754	'	'
Revolving line of credit	0	0	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	315,000	264,000	'	'
Self Insurance Reserve	52,008	55,315	'	'
Total liabilities	422,143	396,911	'	'
Total stockholdersb equity	219,950	211,429	'	'
Total liabilities and stockholdersb equity	642,093	608,340	'	'
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	61,972	54,564	45,175	43,877
Restricted cash	0	0	'	'
Restricted investments, held to maturity, amortized cost	0	0	'	'
Accounts receivable, net	29,566	28,997	'	'
Due from Affiliate, Current	0	0	'	'
Other current assets	121,424	127,775	'	'
Total current assets	212,962	211,336	'	'
Property and equipment, net	1,447,056	1,407,414	'	'
Investment in subsidiaries	1,040,096	983,289	'	'
Other assets	62,185	83,967	'	'
Intangible assets, net	295,060	307,092	'	'
Goodwill	246,977	246,977	'	'
Total assets	3,304,336	3,240,075	'	'
Due to Affiliate, Current	491,849	542,772	'	'
Current portion of long-term debt and obligations under capital leases	71,877	64,970	'	'
Other current liabilities	335,313	277,921	'	'
Total current liabilities	899,039	885,663	'	'
Long-term debt and obligations under capital leases, less current portion	562,776	747,918	'	'
Deferred income taxes	452,525	487,670	'	'
Revolving line of credit	82,000	17,000	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0	'	'
Self Insurance Reserve	91,267	73,774	'	'
Total liabilities	2,087,607	2,212,025	'	'
Total stockholdersb equity	1,216,729	1,028,050	'	'
Total liabilities and stockholdersb equity	3,304,336	3,240,075	'	'
Swift Services Holdings, Inc. (Issuer) [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0	'	'
Restricted investments, held to maturity, amortized cost	0	0	'	'
Accounts receivable, net	0	0	'	'
Due from Affiliate, Current	315,358	400,569	'	'
Other current assets	0	0	'	'
Total current assets	315,358	400,569	'	'
Property and equipment, net	0	0	'	'
Investment in subsidiaries	946,319	870,599	'	'
Other assets	1,809	2,355	'	'
Intangible assets, net	0	0	'	'
Goodwill	0	0	'	'
Total assets	1,263,486	1,273,523	'	'
Due to Affiliate, Current	5,485	1,296	'	'
Current portion of long-term debt and obligations under capital leases	0	0	'	'
Other current liabilities	14,106	6,389	'	'
Total current liabilities	19,591	7,685	'	'
Long-term debt and obligations under capital leases, less current portion	423,596	493,825	'	'
Deferred income taxes	0	0	'	'
Revolving line of credit	0	0	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0	'	'
Self Insurance Reserve	0	0	'	'
Total liabilities	443,187	501,510	'	'
Total stockholdersb equity	820,299	772,013	'	'
Total liabilities and stockholdersb equity	1,263,486	1,273,523	'	'
Swift Transportation Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Cash and cash equivalents	0	0	0	0
Restricted cash	0	0	'	'
Restricted investments, held to maturity, amortized cost	0	0	'	'
Accounts receivable, net	0	0	'	'
Due from Affiliate, Current	119,902	85,498	'	'
Other current assets	10,473	37,022	'	'
Total current assets	130,375	122,520	'	'
Property and equipment, net	0	0	'	'
Investment in subsidiaries	349,664	239,432	'	'
Other assets	11,360	11,780	'	'
Intangible assets, net	0	0	'	'
Goodwill	0	0	'	'
Total assets	491,399	373,732	'	'
Due to Affiliate, Current	0	0	'	'
Current portion of long-term debt and obligations under capital leases	609	6,036	'	'
Other current liabilities	9,205	2,281	'	'
Total current liabilities	9,814	8,317	'	'
Long-term debt and obligations under capital leases, less current portion	0	0	'	'
Deferred income taxes	0	0	'	'
Revolving line of credit	0	0	'	'
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	0	0	'	'
Self Insurance Reserve	0	0	'	'
Total liabilities	9,814	8,317	'	'
Total stockholdersb equity	481,585	365,415	'	'
Total liabilities and stockholdersb equity	$491,399	$373,732	'	'

Guarantor_Condensed_Consolidat3

Guarantor Condensed Consolidating Financial Statements (Condensed Consolidating Statement Of Operations) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	($23,363)	($28,311)	($78,183)	($76,474)
Operating revenue	1,074,880	1,032,127	3,159,224	3,042,806
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	240,005	220,156	707,464	670,493
Operating supplies and expenses	88,459	85,204	253,361	236,267
Fuel	149,099	160,561	458,798	489,563
Purchased transportation	328,112	318,321	987,530	918,594
Rental expense	59,655	46,262	167,509	129,881
Insurance and claims	37,673	35,110	113,442	100,245
Depreciation and amortization of property and equipment	54,369	58,254	165,335	170,004
Amortization of intangibles	4,204	4,204	12,611	12,611
Asset Impairment Charges	2,308	0	2,308	0
Gain on disposal of property and equipment	-11,628	-5,619	-23,099	-13,610
Communication and utilities	7,321	6,679	22,207	19,145
Operating taxes and licenses	17,892	18,575	54,155	55,209
Total operating expenses	977,469	947,707	2,921,621	2,788,402
Operating income	97,411	84,420	237,603	254,404
Income before income taxes	74,048	56,109	159,420	177,930
Income tax expense (benefit)	23,890	26,156	56,759	67,806
Net income (loss)	50,158	29,953	102,661	110,124
Swift Transportation Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	53,481	34,203	110,175	78,546
Operating revenue	0	0	0	0
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	1,540	1,081	3,892	2,459
Operating supplies and expenses	1,122	552	2,485	1,682
Fuel	0	0	0	0
Purchased transportation	0	0	0	0
Rental expense	0	0	0	0
Insurance and claims	1,739	0	5,134	0
Depreciation and amortization of property and equipment	0	0	0	0
Amortization of intangibles	0	0	0	0
Asset Impairment Charges	0	'	0	'
Gain on disposal of property and equipment	0	0	0	0
Communication and utilities	0	0	0	0
Operating taxes and licenses	0	0	62	0
Total operating expenses	4,401	1,633	11,573	4,141
Operating income	-4,401	-1,633	-11,573	-4,141
Interest expense, net	7	0	56	0
Other (income) expenses, net	-53,488	-34,203	-110,231	-78,546
Income before income taxes	49,080	32,570	98,602	74,405
Income tax expense (benefit)	-1,078	2,819	-4,059	-21,629
Net income (loss)	50,158	29,751	102,661	96,034
Swift Services Holdings, Inc. (Issuer) [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	22,313	18,170	32,124	37,791
Operating revenue	0	0	0	0
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	0	0	0	0
Operating supplies and expenses	2	2	3	6
Fuel	0	0	0	0
Purchased transportation	0	0	0	0
Rental expense	0	0	0	0
Insurance and claims	0	0	0	0
Depreciation and amortization of property and equipment	0	0	0	0
Amortization of intangibles	0	0	0	0
Asset Impairment Charges	0	'	0	'
Gain on disposal of property and equipment	0	0	0	0
Communication and utilities	0	0	0	0
Operating taxes and licenses	0	0	0	0
Total operating expenses	2	2	3	6
Operating income	-2	-2	-3	-6
Interest expense, net	11,306	12,913	36,005	38,740
Other (income) expenses, net	-33,619	-31,083	-68,129	-76,531
Income before income taxes	22,311	18,168	32,121	37,785
Income tax expense (benefit)	-5,250	-4,853	-16,164	-14,435
Net income (loss)	27,561	23,021	48,285	52,220
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	20,184	8,458	17,722	16,975
Operating revenue	1,055,901	1,015,440	3,099,650	2,989,063
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	230,835	211,717	680,266	645,784
Operating supplies and expenses	86,546	84,036	247,636	229,568
Fuel	142,837	154,478	438,464	470,395
Purchased transportation	338,611	328,677	1,017,617	948,073
Rental expense	59,049	45,639	165,565	127,789
Insurance and claims	29,786	28,956	90,178	85,249
Depreciation and amortization of property and equipment	52,981	57,032	161,222	166,582
Amortization of intangibles	4,011	4,011	12,032	12,032
Asset Impairment Charges	2,308	'	2,308	'
Gain on disposal of property and equipment	-11,620	-5,622	-23,091	-13,634
Communication and utilities	6,964	6,444	21,285	18,486
Operating taxes and licenses	15,499	16,034	46,079	47,203
Total operating expenses	957,807	931,402	2,859,561	2,737,527
Operating income	98,094	84,038	240,089	251,536
Interest expense, net	8,994	11,780	28,319	34,534
Other (income) expenses, net	-29,178	-20,238	-46,041	-51,509
Income before income taxes	118,278	92,496	257,811	268,511
Income tax expense (benefit)	28,319	27,007	71,860	99,343
Net income (loss)	89,959	65,489	185,951	169,168
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	2,426	1,811	6,555	4,657
Operating revenue	37,149	38,205	114,877	117,644
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	7,630	7,358	23,306	22,250
Operating supplies and expenses	3,444	2,931	11,368	10,960
Fuel	6,262	6,083	20,334	19,168
Purchased transportation	1,663	2,274	6,715	8,892
Rental expense	771	781	2,437	2,578
Insurance and claims	9,336	12,567	28,007	34,091
Depreciation and amortization of property and equipment	1,388	1,222	4,113	3,422
Amortization of intangibles	193	193	579	579
Asset Impairment Charges	0	'	0	'
Gain on disposal of property and equipment	-8	3	-8	24
Communication and utilities	357	235	922	659
Operating taxes and licenses	2,393	2,541	8,014	8,006
Total operating expenses	33,429	36,188	105,787	110,629
Operating income	3,720	2,017	9,090	7,015
Interest expense, net	1,044	763	3,462	3,263
Other (income) expenses, net	-3,470	-2,574	-10,017	-7,920
Income before income taxes	6,146	3,828	15,645	11,672
Income tax expense (benefit)	1,899	1,183	5,122	4,527
Net income (loss)	4,247	2,645	10,523	7,145
Eliminations For Consolidation [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	-121,767	-90,953	-244,759	-214,443
Operating revenue	-18,170	-21,518	-55,303	-63,901
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	0	0	0	0
Operating supplies and expenses	-2,655	-2,317	-8,131	-5,949
Fuel	0	0	0	0
Purchased transportation	-12,162	-12,630	-36,802	-38,371
Rental expense	-165	-158	-493	-486
Insurance and claims	-3,188	-6,413	-9,877	-19,095
Depreciation and amortization of property and equipment	0	0	0	0
Amortization of intangibles	0	0	0	0
Asset Impairment Charges	0	'	0	'
Gain on disposal of property and equipment	0	0	0	0
Communication and utilities	0	0	0	0
Operating taxes and licenses	0	0	0	0
Total operating expenses	-18,170	-21,518	-55,303	-63,901
Operating income	0	0	0	0
Interest expense, net	'	0	0	0
Other (income) expenses, net	121,767	90,953	244,759	214,443
Income before income taxes	-121,767	-90,953	-244,759	-214,443
Income tax expense (benefit)	0	0	0	0
Net income (loss)	-121,767	-90,953	-244,759	-214,443
Condensed Consolidated Total [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Other Income (Expenses), Net	-23,363	-28,311	-78,183	-76,474
Operating revenue	1,074,880	1,032,127	3,159,224	3,042,806
Operating expenses:	'	'	'	'
Salaries, wages and employee benefits	240,005	220,156	707,464	670,493
Operating supplies and expenses	88,459	85,204	253,361	236,267
Fuel	149,099	160,561	458,798	489,563
Purchased transportation	328,112	318,321	987,530	918,594
Rental expense	59,655	46,262	167,509	129,881
Insurance and claims	37,673	35,110	113,442	100,245
Depreciation and amortization of property and equipment	54,369	58,254	165,335	170,004
Amortization of intangibles	4,204	4,204	12,611	12,611
Asset Impairment Charges	2,308	'	2,308	'
Gain on disposal of property and equipment	-11,628	-5,619	-23,099	-13,610
Communication and utilities	7,321	6,679	22,207	19,145
Operating taxes and licenses	17,892	18,575	54,155	55,209
Total operating expenses	977,469	947,707	2,921,621	2,788,402
Operating income	97,411	84,420	237,603	254,404
Interest expense, net	21,351	25,456	67,842	76,537
Other (income) expenses, net	2,012	2,855	10,341	-63
Income before income taxes	74,048	56,109	159,420	177,930
Income tax expense (benefit)	23,890	26,156	56,759	67,806
Net income (loss)	$50,158	$29,953	$102,661	$110,124

Guarantor_Condensed_Consolidat4

Guarantor Condensed Consolidating Financial Statements (Condensed Consolidating Statement Of Comprehensive Income) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	$50,158	$29,953	$102,661	$110,124
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	1,642	1,106	4,438	2,065
Change in fair value of interest rate swaps	0	0	0	-145
Other comprehensive income before income taxes	1,642	1,106	4,438	1,920
Income tax effect of items within other comprehensive income	-633	-326	-1,710	-544
Total comprehensive income	51,167	30,733	105,389	111,500
Swift Transportation Company [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	50,158	29,751	102,661	96,034
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	0	0	0	0
Change in fair value of interest rate swaps	'	'	'	0
Other comprehensive income before income taxes	0	0	0	0
Income tax effect of items within other comprehensive income	0	0	0	0
Total comprehensive income	50,158	29,751	102,661	96,034
Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	89,959	65,489	185,951	169,168
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	1,642	1,106	4,438	2,065
Change in fair value of interest rate swaps	'	'	'	-145
Other comprehensive income before income taxes	1,642	1,106	4,438	1,920
Income tax effect of items within other comprehensive income	-633	-326	-1,710	-544
Total comprehensive income	90,968	66,269	188,679	170,544
Swift Services Holdings, Inc. (Issuer) [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	27,561	23,021	48,285	52,220
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	0	0	0	0
Change in fair value of interest rate swaps	'	'	'	0
Other comprehensive income before income taxes	0	0	0	0
Income tax effect of items within other comprehensive income	0	0	0	0
Total comprehensive income	27,561	23,021	48,285	52,220
Non-Guarantor Subsidiaries [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	4,247	2,645	10,523	7,145
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	0	0	0	0
Change in fair value of interest rate swaps	'	'	'	0
Other comprehensive income before income taxes	0	0	0	0
Income tax effect of items within other comprehensive income	0	0	0	0
Total comprehensive income	4,247	2,645	10,523	7,145
Eliminations For Consolidation [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	-121,767	-90,953	-244,759	-214,443
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	0	0	0	0
Change in fair value of interest rate swaps	'	'	'	0
Other comprehensive income before income taxes	0	0	0	0
Income tax effect of items within other comprehensive income	0	0	0	0
Total comprehensive income	-121,767	-90,953	-244,759	-214,443
Condensed Consolidated Total [Member]	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net income (loss)	50,158	29,953	102,661	110,124
Other comprehensive income before income taxes:	'	'	'	'
Accumulated losses on derivatives reclassified to derivative interest expense	1,642	1,106	4,438	2,065
Change in fair value of interest rate swaps	'	'	'	-145
Other comprehensive income before income taxes	1,642	1,106	4,438	1,920
Income tax effect of items within other comprehensive income	-633	-326	-1,710	-544
Total comprehensive income	$51,167	$30,733	$105,389	$111,500

Guarantor_Condensed_Consolidat5

Guarantor Condensed Consolidating Financial Statements (Condensed Consolidating Statement Of Cash Flows) (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	$292,813	$355,863
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	-678	1,302
Change in restricted investments	364	-1,900
Proceeds from sale of property and equipment	116,672	75,812
Capital expenditures	-211,113	-236,990
Payments received on notes receivable	3,759	2,775
Expenditures on assets held for sale	-2,900	-17,442
Payments received on assets held for sale	20,089	47,365
Payments received on equipment sale receivables	368	1,266
Payments to Acquire Businesses, Net of Cash Acquired	0	-147,822
Net cash used in investing activities	-73,439	-275,634
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-772,088	-199,490
Net borrowings on revolving line of credit	65,000	59,469
Repayment of accounts receivable securitization	-49,000	-124,000
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	7,587	10,422
Income tax benefit from exercise of stock options	2,029	-383
Proceeds from long-term debt	450,000	26,268
Payment of deferred loan costs	-11,784	-2,183
Borrowings under accounts receivable securitization	100,000	180,000
Distribution to Central stockholders, pre-acquisition	0	-2,499
Issuance of Central stockholders' loan receivable, pre-acquisition	0	-30,000
Net cash used in financing activities	-208,256	-82,396
Net (decrease) increase in cash and cash equivalents	11,118	-2,167
Cash and cash equivalents at beginning of period	59,178	53,596
Cash and cash equivalents at end of period	70,296	51,429
Swift Transportation Company [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	30,214	25,038
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	0	0
Change in restricted investments	0	0
Proceeds from sale of property and equipment	0	0
Capital expenditures	0	0
Payments received on notes receivable	'	0
Expenditures on assets held for sale	0	0
Payments received on assets held for sale	0	0
Payments received on equipment sale receivables	0	0
Dividends from subsidiary	0	0
Payments received on intercompany notes payable	'	0
Capital Contribution To Subsidiary	'	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Net cash used in investing activities	0	0
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-5,427	0
Net borrowings on revolving line of credit	0	0
Repayment of accounts receivable securitization	0	0
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	7,587	10,422
Income tax benefit from exercise of stock options	2,029	-383
Proceeds from long-term debt	0	0
Payment of deferred loan costs	0	0
Borrowings under accounts receivable securitization	0	0
Distribution to Central stockholders, pre-acquisition	'	0
Issuance of Central stockholders' loan receivable, pre-acquisition	'	0
Dividend to parent	0	0
Capital contribution	'	0
Repayment of intercompany notes payable	'	0
Net funding (to) from affiliates	-34,403	-35,077
Net cash used in financing activities	-30,214	-25,038
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Swift Services Holdings, Inc. (Issuer) [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	-13,288	-8,081
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	0	0
Change in restricted investments	0	0
Proceeds from sale of property and equipment	0	0
Capital expenditures	0	0
Payments received on notes receivable	0	0
Expenditures on assets held for sale	0	0
Payments received on assets held for sale	0	0
Payments received on equipment sale receivables	0	0
Dividends from subsidiary	'	0
Payments received on intercompany notes payable	'	0
Capital Contribution To Subsidiary	'	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Net cash used in investing activities	0	0
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-71,924	0
Net borrowings on revolving line of credit	0	0
Repayment of accounts receivable securitization	0	0
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	0	0
Income tax benefit from exercise of stock options	0	0
Proceeds from long-term debt	0	0
Payment of deferred loan costs	0	0
Borrowings under accounts receivable securitization	0	0
Distribution to Central stockholders, pre-acquisition	'	0
Issuance of Central stockholders' loan receivable, pre-acquisition	'	0
Dividend to parent	0	0
Capital contribution	'	0
Repayment of intercompany notes payable	'	0
Net funding (to) from affiliates	85,212	8,081
Net cash used in financing activities	13,288	8,081
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	304,671	359,079
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	0	0
Change in restricted investments	0	0
Proceeds from sale of property and equipment	116,638	75,663
Capital expenditures	-210,488	-231,701
Payments received on notes receivable	3,759	2,775
Expenditures on assets held for sale	-2,900	-17,442
Payments received on assets held for sale	20,089	47,365
Payments received on equipment sale receivables	368	1,266
Dividends from subsidiary	2,000	6,800
Payments received on intercompany notes payable	'	3,399
Capital Contribution To Subsidiary	'	-1,160
Payments to Acquire Businesses, Net of Cash Acquired	'	-147,822
Net cash used in investing activities	-70,534	-260,857
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-691,666	-192,041
Net borrowings on revolving line of credit	65,000	59,469
Repayment of accounts receivable securitization	0	0
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	0	0
Income tax benefit from exercise of stock options	0	0
Proceeds from long-term debt	450,000	16,000
Payment of deferred loan costs	-11,684	-1,332
Borrowings under accounts receivable securitization	0	0
Distribution to Central stockholders, pre-acquisition	'	-2,499
Issuance of Central stockholders' loan receivable, pre-acquisition	'	-30,000
Dividend to parent	0	0
Capital contribution	'	0
Repayment of intercompany notes payable	'	0
Net funding (to) from affiliates	-38,379	53,479
Net cash used in financing activities	-226,729	-96,924
Net (decrease) increase in cash and cash equivalents	7,408	1,298
Cash and cash equivalents at beginning of period	54,564	43,877
Cash and cash equivalents at end of period	61,972	45,175
Non-Guarantor Subsidiaries [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	-28,784	-20,173
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	-678	1,302
Change in restricted investments	364	-1,900
Proceeds from sale of property and equipment	34	149
Capital expenditures	-625	-5,289
Payments received on notes receivable	0	0
Expenditures on assets held for sale	0	0
Payments received on assets held for sale	0	0
Payments received on equipment sale receivables	0	0
Dividends from subsidiary	0	0
Payments received on intercompany notes payable	'	0
Capital Contribution To Subsidiary	'	0
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Net cash used in investing activities	-905	-5,738
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-3,071	-7,449
Net borrowings on revolving line of credit	0	0
Repayment of accounts receivable securitization	-49,000	-124,000
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	0	0
Income tax benefit from exercise of stock options	0	0
Proceeds from long-term debt	0	10,268
Payment of deferred loan costs	-100	-851
Borrowings under accounts receivable securitization	100,000	180,000
Distribution to Central stockholders, pre-acquisition	'	0
Issuance of Central stockholders' loan receivable, pre-acquisition	'	0
Dividend to parent	-2,000	-6,800
Capital contribution	'	1,160
Repayment of intercompany notes payable	'	-3,399
Net funding (to) from affiliates	-12,430	-26,483
Net cash used in financing activities	33,399	22,446
Net (decrease) increase in cash and cash equivalents	3,710	-3,465
Cash and cash equivalents at beginning of period	4,614	9,719
Cash and cash equivalents at end of period	8,324	6,254
Eliminations For Consolidation [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	0	0
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	0	0
Change in restricted investments	0	0
Proceeds from sale of property and equipment	0	0
Capital expenditures	0	0
Payments received on notes receivable	0	0
Expenditures on assets held for sale	0	0
Payments received on assets held for sale	0	0
Payments received on equipment sale receivables	0	0
Dividends from subsidiary	-2,000	-6,800
Payments received on intercompany notes payable	'	-3,399
Capital Contribution To Subsidiary	'	1,160
Payments to Acquire Businesses, Net of Cash Acquired	'	0
Net cash used in investing activities	-2,000	-9,039
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	0	0
Net borrowings on revolving line of credit	0	0
Repayment of accounts receivable securitization	0	0
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	0	0
Income tax benefit from exercise of stock options	0	0
Proceeds from long-term debt	0	0
Payment of deferred loan costs	0	0
Borrowings under accounts receivable securitization	0	0
Distribution to Central stockholders, pre-acquisition	'	0
Issuance of Central stockholders' loan receivable, pre-acquisition	'	0
Dividend to parent	2,000	6,800
Capital contribution	'	-1,160
Repayment of intercompany notes payable	'	3,399
Net funding (to) from affiliates	0	0
Net cash used in financing activities	2,000	9,039
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Condensed Consolidated Total [Member]	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	292,813	355,863
Cash flows from investing activities:	'	'
(Increase) decrease in restricted cash	-678	1,302
Change in restricted investments	364	-1,900
Proceeds from sale of property and equipment	116,672	75,812
Capital expenditures	-211,113	-236,990
Payments received on notes receivable	3,759	2,775
Expenditures on assets held for sale	-2,900	-17,442
Payments received on assets held for sale	20,089	47,365
Payments received on equipment sale receivables	368	1,266
Dividends from subsidiary	0	0
Payments received on intercompany notes payable	'	0
Capital Contribution To Subsidiary	'	0
Payments to Acquire Businesses, Net of Cash Acquired	'	-147,822
Net cash used in investing activities	-73,439	-275,634
Cash flows from financing activities:	'	'
Repayment of long-term debt and capital leases	-772,088	-199,490
Net borrowings on revolving line of credit	65,000	59,469
Repayment of accounts receivable securitization	-49,000	-124,000
Proceeds from exercise of stock options and the issuance of employee stock purchase plan shares	7,587	10,422
Income tax benefit from exercise of stock options	2,029	-383
Proceeds from long-term debt	450,000	26,268
Payment of deferred loan costs	-11,784	-2,183
Borrowings under accounts receivable securitization	100,000	180,000
Distribution to Central stockholders, pre-acquisition	'	-2,499
Issuance of Central stockholders' loan receivable, pre-acquisition	'	-30,000
Dividend to parent	0	0
Capital contribution	'	0
Repayment of intercompany notes payable	'	0
Net funding (to) from affiliates	0	0
Net cash used in financing activities	-208,256	-82,396
Net (decrease) increase in cash and cash equivalents	11,118	-2,167
Cash and cash equivalents at beginning of period	59,178	53,596
Cash and cash equivalents at end of period	$70,296	$51,429