Air Transport Services (ATSG) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	3 Months Ended
	Mar. 31, 2015	8-May-15	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	Air Transport Services Group, Inc.
Entity Central Index Key	894081
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		65,234,555
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$438,608,807

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
CURRENT ASSETS:
Cash and cash equivalents	$20,612	$30,560
Accounts receivable, net of allowance of $693 in 2015 and $812 in 2014	44,591	43,513
Inventory	10,313	10,665
Prepaid supplies and other	9,274	11,898
Deferred income taxes	19,770	19,770
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Current	665	715
TOTAL CURRENT ASSETS	105,225	117,121
Property and equipment, net	857,450	847,268
Other assets	26,776	28,230
Goodwill and acquired intangibles	38,940	39,010
Goodwill	34,395	34,395
TOTAL ASSETS	1,028,391	1,031,629
CURRENT LIABILITIES:
Accounts payable	36,339	40,608
Accrued salaries, wages and benefits	22,383	25,633
Accrued expenses	8,412	8,201
Current portion of debt obligations	24,507	24,344
Unearned revenue	9,850	12,914
TOTAL CURRENT LIABILITIES	101,491	111,700
Long term debt	312,011	319,750
Post-retirement obligations	88,915	92,050
Other liabilities	59,735	57,647
Deferred income taxes	108,820	102,993
TOTAL LIABILITIES	670,972	684,140
Commitments and contingencies (Note G)
STOCKHOLDERS’ EQUITY:
Preferred stock, 20,000,000 shares authorized, including 75,000 Series A Junior Participating Preferred Stock	0	0
Common stock, par value $0.01 per share; 75,000,000 shares authorized; 65,119,626 and 64,854,950 shares issued and outstanding in 2015 and 2014, respectively	651	649
Additional paid-in capital	526,832	526,669
Accumulated deficit	-87,844	-96,953
Accumulated other comprehensive loss	-82,220	-82,876
TOTAL STOCKHOLDERS’ EQUITY	357,419	347,489
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$1,028,391	$1,031,629

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Assets, Current [Abstract]
Allowance for doubtful accounts	$693	$812
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	65,119,626	64,854,950
Common stock, shares outstanding (in shares)	65,119,626	64,854,950
Preferred Stock [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Series A Junior Participating Preferred Stock [Member]
Stockholders' Equity Attributable to Parent [Abstract]
Preferred stock, shares authorized (in shares)	75,000	75,000

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
REVENUES	$147,025	$143,593
OPERATING EXPENSES
Salaries, wages and benefits	43,679	43,065
Fuel	10,778	12,260
Maintenance, materials and repairs	22,693	24,879
Depreciation and amortization	28,993	24,979
Travel	4,423	4,573
Rent	4,207	7,310
Landing and ramp	2,708	2,738
Insurance	1,258	1,205
Other operating expenses	10,757	8,748
Operating Expenses	129,496	129,757
OPERATING INCOME	17,529	13,836
OTHER INCOME (EXPENSE)
Interest income	22	19
Interest expense	-3,065	-3,823
Net gain (loss) on derivative instruments	-13	299
Other Nonoperating Income (Expense)	-3,056	-3,505
EARNINGS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	14,473	10,331
INCOME TAX EXPENSE	-5,578	-3,809
EARNINGS FROM CONTINUING OPERATIONS	8,895	6,522
EARNINGS FROM DISCONTINUED OPERATIONS, NET OF TAXES	214	211
NET EARNINGS	$9,109	$6,733
BASIC EARNINGS PER SHARE
Continuing operations (in dollars per share)	$0.14	$0.10
Discontinued operations (in dollars per share)	$0	$0
TOTAL BASIC EARNINGS PER SHARE (in dollars per share)	$0.14	$0.10
DILUTED EARNINGS PER SHARE
Continuing operations (in dollars per share)	$0.14	$0.10
Discontinued operations (in dollars per share)	$0	$0
TOTAL DILUTED NET EARNINGS PER SHARE (in dollars per share)	$0.14	$0.10
WEIGHTED AVERAGE SHARES
Basic (in shares)	64,454	64,148
Diluted (in shares)	65,337	65,141

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
NET EARNINGS	$9,109	$6,733
Other comprehensive income (loss), net of tax	-6	-7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	-440	0
OTHER COMPREHENSIVE INCOME (LOSS):
Income tax (expense) or benefit	3	4
TOTAL COMPREHENSIVE INCOME, net of tax	9,765	6,221
Pension Plans [Member]
Other comprehensive income (loss), net of tax	1,142	-1
OTHER COMPREHENSIVE INCOME (LOSS):
Income tax (expense) or benefit	-651	0
Post-Retirement Plans [Member]
Other comprehensive income (loss), net of tax	-40	-504
OTHER COMPREHENSIVE INCOME (LOSS):
Income tax (expense) or benefit	$23	$288

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
OPERATING ACTIVITIES:
Net earnings from continuing operations	$8,895	$6,522
Net loss from discontinued operations	214	211
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	28,993	24,979
Reclassification of pension and post-retirement balance	1,730	-793
Deferred income taxes	5,440	3,696
Amortization of stock-based compensation	755	570
Amortization of DHL promissory note	-1,550	-1,550
Net gain on derivative instruments	13	-299
Changes in assets and liabilities:
Accounts receivable	-901	1,650
Inventory and prepaid supplies	2,578	-5,045
Accounts payable	799	-3,627
Unearned revenue	-1,234	-1,371
Accrued expenses, salaries, wages, benefits and other liabilities	-2,798	209
Pension and post-retirement	-3,140	-2,463
Other	-456	-887
NET CASH PROVIDED BY OPERATING ACTIVITIES	39,338	21,802
INVESTING ACTIVITIES:
Capital expenditures	-43,440	-4,362
Proceeds from property and equipment	180	190
Investment in nonconsolidated affiliate	0	-15,000
NET CASH (USED IN) INVESTING ACTIVITIES	-43,260	-19,172
FINANCING ACTIVITIES:
Principal payments on long term obligations	-26,026	-23,374
Proceeds from borrowings	20,000	15,000
Funding for hangar construction	0	1,147
NET CASH (USED IN) FINANCING ACTIVITIES	-6,026	-7,227
NET (DECREASE) IN CASH AND CASH EQUIVALENTS	-9,948	-4,597
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	30,560	31,699
CASH AND CASH EQUIVALENTS AT END OF PERIOD	20,612	27,102
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid, net of amount capitalized	2,952	3,616
Federal alternative minimum and state income taxes paid	272	55
SUPPLEMENTAL NON-CASH INFORMATION:
Debt extinguished	1,550	1,550
Accrued capital expenditures	$2,987	$225

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at	$347,489
Balance at (in shares)	64,854,950
Total comprehensive income (loss)	9,765
Balance at	357,419
Balance at (in shares)	65,119,626
Accumulated Deficit [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss)	$9,109

Equity_Investment_Statement

Equity Investment Statement (USD $)	Mar. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$13,000,000	$13,800,000
Goodwill	34,395,000	34,395,000
Investment in West Atlantic [Member]
Schedule of Equity Method Investments [Line Items]
Goodwill		$5,500,000

Summary_of_Financial_Statement

Summary of Financial Statement Preparation and Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Financial Statement Preparation and Significant Accounting Policies	SUMMARY OF FINANCIAL STATEMENT PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES
	Nature of Operations
	Air Transport Services Group, Inc. is a holding company whose principal subsidiaries include an aircraft leasing company and two independently certificated airlines. The Company provides airline operations, aircraft leases, aircraft maintenance and other support services primarily to the cargo transportation and package delivery industries. Through the Company's subsidiaries, it offers a range of complementary services to delivery companies, freight forwarders, airlines and government customers.
	The airlines, ABX Air, Inc. (“ABX”) and Air Transport International, Inc. (“ATI”), each have the authority, through their separate U.S. Department of Transportation ("DOT") and Federal Aviation Administration ("FAA") certificates, to transport cargo worldwide. The Company's leasing subsidiary, Cargo Aircraft Management, Inc. (“CAM”), leases aircraft to each of the Company's airlines as well as to non-affiliated airlines and other lessees.
	The Company provides aircraft and airline operations to its customers, typically under contracts providing for a combination of aircraft, crews, maintenance and insurance ("ACMI") services. The Company serves a base of concentrated customers who have a diverse line of international cargo traffic. DHL Network Operations (USA), Inc. and its affiliates, “DHL,” is the Company's largest customer. ATI provides passenger transportation, primarily to the U.S. Military, using "combi" aircraft, which are certified to carry passengers as well as cargo on the main deck.
	In addition to its airline operations and aircraft leasing services, the Company sells aircraft parts, provides aircraft and equipment maintenance services, and operates mail sorting facilities for the U.S. Postal Service (“USPS”).
	Basis of Presentation
	The accompanying unaudited condensed interim consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States of America and such principles are applied on a basis consistent with information reflected in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014 filed with the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations promulgated by the SEC related to interim financial statements. In the opinion of management, the accompanying financial statements contain all adjustments, including normal recurring adjustments, necessary for the fair presentation of the Company’s results of operations and financial position for the periods presented. Due to seasonal fluctuations, among other factors common to the airline industry, the results of operations for the periods presented are not necessarily indicative of the results of operations to be expected for the entire year or any interim period. The preparation of consolidated financial statements requires management to make estimates and assumptions that affect amounts reported in the consolidated financial statements. The accounting estimates reflect the best judgment of management, but actual results could differ materially.
	The accompanying condensed consolidated financial statements include the accounts of Air Transport Services Group, Inc. and its wholly-owned subsidiaries. Investments in an affiliate in which the Company has significant influence but does not exercise control are accounted for using the equity method of accounting. Using the equity method, the Company’s share of the nonconsolidated affiliate's income or loss is recognized in the consolidated statement of earnings and cumulative post-acquisition changes in the investment are adjusted against the carrying amount of the investment. Inter-company balances and transactions are eliminated.
	New Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). ASU 2014-09 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016 unless FASB elects to delay the effective date. The Company is currently evaluating the methods of adoption allowed by the new standard and the effect the standard is expected to have on the Company's consolidated financial position, results of operations or cash flows and related disclosures.
	In April 2015, the FASB issued ASU 2015-03, "Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs" ("ASU 2015-03"). ASU 2015-03 requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying value of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by ASU 2015-03. The amendments in ASU 2015-03 are effective retrospectively for fiscal years, and interim periods within those years, beginning after December 15, 2015. Early adoption is permitted. The Company does not expect the impact of adopting ASU 2015-03 to be material to the Company’s financial statements and related disclosures.

Significant_Customers

Significant Customers	3 Months Ended
	Mar. 31, 2015
Significant Customers [Abstract]
Significant Customers	SIGNIFICANT CUSTOMERS
	DHL
	The Company's largest customer is DHL. The Company has had long term contracts with DHL since August 2003. Revenues from continuing operations performed for DHL were approximately 52% and 56% of the Company's consolidated revenues from continuing operations for the three month periods ending March 31, 2015 and 2014, respectively. The Company’s balance sheets include accounts receivable with DHL of $12.4 million and $12.2 million as of March 31, 2015 and December 31, 2014, respectively.
	The Company leases Boeing 767 aircraft to DHL under both long-term and short-term lease agreements. Under a separate crew, maintenance and insurance (“CMI”) agreement, the Company operates Boeing 767 aircraft that DHL leases from the Company and Boeing 767 aircraft that DHL owns. Pricing for services provided through the CMI agreement is based on pre-defined fees, scaled for the number of aircraft operated and the number of flight crews provided to DHL for its U.S. network. The Company provides DHL with scheduled maintenance services for aircraft that DHL leases or owns. The Company also provides Boeing 767 and Boeing 757 air cargo transportation services for DHL through additional ACMI agreements in which the Company provides the aircraft, crews, maintenance and insurance under a single contract. Revenues generated from the ACMI agreements are typically based on hours flown. The Company also provides ground equipment, such as power units, air starts and related maintenance services to DHL under separate agreements.
	U.S. Military
	A substantial portion of the Company's revenues are also derived from the U.S. Military. The U.S. Military awards flights to U.S. certificated airlines through annual contracts and through temporary "expansion" routes. Revenues from services performed for the U.S. Military were approximately 16% and 16% of the Company's total revenues from continuing operations for the three month periods ending March 31, 2015 and 2014, respectively. The Company's balance sheets included accounts receivable with the U.S. Military of $8.6 million and $6.0 million as of March 31, 2015 and December 31, 2014, respectively.

Goodwill_and_Other_Intangibles

Goodwill and Other Intangibles (Notes)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	GOODWILL, ACQUIRED INTANGIBLES AND EQUITY INVESTMENTS
	The Company has one reporting unit that has goodwill, CAM. The carrying amounts of goodwill are as follows (in thousands):
		CAM				Total
	Carrying value as of December 31, 2014	$	34,395			$	34,395
	Carrying value as of March 31, 2015	$	34,395			$	34,395
	The Company's intangible assets relate to the ACMI Services segment and are as follows (in thousands):
			Customer				Airline
			Relationships				Certificates		Total
	Carrying value as of December 31, 2014		$	1,615			$	3,000	$	4,615
	Amortization		(70		)		—		(70		)
	Carrying value as of March 31, 2015		$	1,545			$	3,000	$	4,545
	The customer relationship intangible amortizes through 2020. The airline certificates have an indefinite life and therefore are not amortized.
	In January 2014, the Company acquired a 25 percent equity interest in West Atlantic AB of Gothenburg, Sweden ("West"). West, through its two airlines, Atlantic Airlines Ltd. and West Air Sweden AB, operates a fleet of approximately 40 aircraft primarily in Europe. West operates its aircraft on behalf of European regional mail carriers and express logistics providers. The airlines operate a combined fleet of British Aerospace ATPs, Bombardier CRJ-200-PFs, Boeing 737 and Boeing 767 aircraft.
	The Company has significant influence, but does not exercise control, over West. Accordingly, the investment in West is accounted for using the equity method of accounting and was initially recognized at cost. The Company’s carrying value of West was $13.0 million and $13.8 million at March 31, 2015 and December 31, 2014, respectively, including $5.5 million of excess purchase price over the Company's proportional fair value of West's net assets in January of 2014. The carrying value is reflected in “Other Assets” in the Company’s consolidated balance sheets.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS
	The Company’s money market funds and interest rate swaps are reported on the Company’s consolidated balance sheets at fair values based on market values from identical or comparable transactions. The fair value of the Company’s money market funds and interest rate swaps are based on observable inputs (Level 2) from comparable market transactions. The use of significant unobservable inputs (Level 3) was not necessary in determining the fair value of the Company’s financial assets and liabilities.
	The following table reflects assets and liabilities that are measured at fair value on a recurring basis (in thousands):
	As of March 31, 2015	Fair Value Measurement Using							Total
		Level 1		Level 2			Level 3
	Assets
	Cash equivalents—money market	$	24	$	4,884		$	—	$	4,908
	Total Assets	$	24	$	4,884		$	—	$	4,908
	Liabilities
	Interest rate swap	$	—	$	(1,432	)	$	—	$	(1,432	)
	Total Liabilities	$	—	$	(1,432	)	$	—	$	(1,432	)
	As of December 31, 2014	Fair Value Measurement Using							Total
		Level 1		Level 2			Level 3
	Assets
	Cash equivalents—money market	$	20	$	2,306		$	—	$	2,326
	Total Assets	$	20	$	2,306		$	—	$	2,326
	Liabilities
	Interest rate swap	$	—	$	(1,419	)	$	—	$	(1,419	)
	Total Liabilities	$	—	$	(1,419	)	$	—	$	(1,419	)
	As a result of lower market interest rates compared to the stated interest rates of the Company’s fixed and variable rate debt obligations, the fair value of the Company’s debt obligations, based on Level 2 observable inputs, was approximately $0.2 million less than the carrying value, which was $336.5 million at March 31, 2015. As of December 31, 2014, the fair value of the Company’s debt obligations was approximately $2.5 million more than the carrying value, which was $344.1 million. The non-financial assets, including goodwill, intangible assets and property and equipment are measured at fair value on a non-recurring basis.

Property_and_Equipment

Property and Equipment	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	PROPERTY AND EQUIPMENT
	The Company's property and equipment consists primarily of cargo aircraft, aircraft engines and flight equipment. Property and equipment, to be held and used, is summarized as follows (in thousands):
		March 31,			December 31,
		2015			2014
	Flight equipment	$	1,325,289		$	1,285,966
	Ground equipment	33,660			33,677
	Leasehold improvements, facilities and office equipment	25,148			25,180
	Aircraft modifications and projects in progress	14,083			18,612
		1,398,180			1,363,435
	Accumulated depreciation	(540,730		)	(516,167		)
	Property and equipment, net	$	857,450		$	847,268
	CAM owned aircraft with a carrying value of $298.7 million and $289.5 million that were under leases to external customers as of March 31, 2015 and December 31, 2014, respectively.
	The carrying value of Boeing 727 and DC-8 freighter aircraft and engines available for sale totaled $0.7 million and $0.7 million as of March 31, 2015 and December 31, 2014, respectively.

Debt_Obligations

Debt Obligations	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt Obligations	DEBT OBLIGATIONS
	Long term obligations consisted of the following (in thousands):
		March 31,			December 31,
		2015			2014
	Unsubordinated term loan	$	112,500		$	116,250
	Revolving credit facility	180,000			180,000
	Aircraft loans	44,018			46,294
	Promissory note due to DHL, unsecured	—			1,550
	Total long term obligations	336,518			344,094
	Less: current portion	(24,507		)	(24,344		)
	Total long term obligations, net	$	312,011		$	319,750
	The Company executed a syndicated credit agreement ("Senior Credit Agreement") in May 2011 which includes an unsubordinated term loan and a revolving credit facility. On May 8, 2015, the Company executed an amendment to the Senior Credit Agreement (the "Fifth Credit Amendment"). The Fifth Credit Amendment extended the maturity of the term loan and revolving credit facility to May 5, 2020, increased the capacity of the Revolving credit facility by $50.0 million to $325.0 million, increased the permitted additional indebtedness by $50.0 million to $150.0 million, and retained the accordion feature whereby the Company can draw up to an additional $50.0 million subject to the lenders' consent. Under the amended terms of the Senior Credit Agreement, the Company is required to maintain collateral coverage equal to 150% of the outstanding balances of the term loan and the maximum capacity of revolving credit facility or 175% of the outstanding balance of the term loan and the total funded revolving credit facility, whichever is less. The minimum collateral coverage which must be maintained is 50% of the outstanding balance of the term loan plus the revolving credit facility commitment which was $325.0 million as of May 8, 2015. Each year, through May 6, 2019, the Company may request a one year extension of the final maturity date, subject to the lenders' consent.
	Under the terms of the Senior Credit Agreement, interest rates are adjusted quarterly based on the Company's earnings before interest, taxes, depreciation and amortization expenses ("EBITDA"), its outstanding debt level and prevailing LIBOR or prime rates. At the Company's current debt-to-EBITDA ratio, the LIBOR based financing for the unsubordinated term loan and revolving credit facility bear a variable interest rate of 1.93% and 1.93%, respectively. The Credit Amendment did not affect the EBITDA based pricing or covenants of the Senior Credit Agreement. The Senior Credit Agreement provides for the issuance of letters of credit on the Company's behalf. As of March 31, 2015, the unused revolving credit facility totaled $85.9 million, net of draws of $180.0 million and outstanding letters of credit of $9.1 million.
	The aircraft loans are collateralized by six aircraft, and amortize monthly with a balloon payment of approximately 20% with maturities between 2016 and early 2018. Interest rates range from 6.74% to 7.36% per annum payable monthly.
	The Senior Credit Agreement is collateralized by certain of the Company's Boeing 767 and 757 aircraft that are not collateralized under aircraft loans. The Senior Credit Agreement contains covenants including, among other things, limitations on certain additional indebtedness, guarantees of indebtedness, as well as a total debt to EBITDA ratio and a fixed charge coverage ratio. The Senior Credit Agreement stipulates events of default, including unspecified events that may have material adverse effects on the Company. If an event of default occurs, the Company may be forced to repay, renegotiate or replace the Senior Credit Agreement. The Senior Credit Agreement limits the amount of dividends the Company can pay and the amount of common stock it can repurchase to $50.0 million during any calendar year, provided the Company's total debt to EBITDA ratio is under 2.5 times, after giving effect to the dividend or repurchase.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES
	Lease Commitments
	The Company leases portions of the air park in Wilmington, Ohio, under long-term lease agreements with a regional port authority. The leased facilities include corporate offices, 310,000 square feet of maintenance hangars and a 100,000 square foot component repair shop at the air park. ABX also has the non-exclusive right to use the airport, which includes one active runway, taxi ways and ramp space. Additionally, the Company leases certain equipment and airport facilities, office space and maintenance facilities at locations outside of the airpark in Wilmington.
	Guarantees and Indemnifications
	Certain leases and agreements of the Company contain guarantees and indemnification obligations to the lessor, or one or more other parties that are considered reasonable and customary (e.g. use, tax and environmental indemnifications), the terms of which range in duration and are often limited. Such indemnification obligations may continue after expiration of the respective lease or agreement.
	Brussels Noise Ordinance
	The Brussels Instituut voor Milieubeheer ("BIM"), a governmental authority in the Brussels-Capital Region of Belgium that oversees the enforcement of environmental matters, imposed four separate administrative penalties on ABX in the approximate aggregate amount of €0.4 million ($0.4 million) for numerous alleged violations of an ordinance limiting the noise caused by aircraft overflying the Brussels-Capital Region (which is located near the Brussels Airport) during the period from May 2009 through December 2010. ABX has exhausted its appeals with respect to all four of the administrative penalties.
	The ordinance in question is controversial for the reason that it was adopted by the Brussels-Capital Region and is more restrictive than the noise limitations in effect in the Flemish Region, which is where the Brussels Airport is located. Numerous airlines have been levied fines under the ordinance, which is currently the subject of several court cases pending before the Belgian courts, including with respect to demands for payment. The Brussels government has suspended issuing demands for payment of the penalties pending the outcome of the litigation. ABX has yet to receive a demand for payment of the penalties.
	Other
	In addition to the foregoing matters, we are also currently a party to legal proceedings, including FAA enforcement actions, in various federal and state jurisdictions arising out of the operation of the Company's business. The amount of alleged liability, if any, from these proceedings cannot be determined with certainty; however, we believe that the Company's ultimate liability, if any, arising from the pending legal proceedings, as well as from asserted legal claims and known potential legal claims which are probable of assertion, taking into account established accruals for estimated liabilities, should not be material to our financial condition or results of operations.
	Employees Under Collective Bargaining Agreements
	As of March 31, 2015, the flight crewmember employees of ABX and ATI were represented by the labor unions listed below:
	Airline	Labor Agreement Unit	Percentage of
			the Company’s
			Employees
	ABX	International Brotherhood of Teamsters	11.80%
	ATI	Air Line Pilots Association	5.90%

Pension_and_Other_PostRetireme

Pension and Other Post-Retirement Benefit Plans	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Pension and Other Post-Retirement Benefit Plans	PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS
	Defined Benefit and Post-retirement Healthcare Plans
	ABX sponsors a qualified defined benefit pension plan for ABX crewmembers and a qualified defined benefit pension plan for a major portion of its other ABX employees that meet minimum eligibility requirements. ABX also sponsors non-qualified defined benefit pension plans for certain employees. These non-qualified plans are unfunded. Employees are no longer accruing benefits under any of the defined benefit pension plans. ABX also sponsors a post-retirement healthcare plan for its ABX employees, which is unfunded. Benefits for covered individuals terminate upon reaching age 65 under the post-retirement healthcare plans.
	The accounting and valuation for these post-retirement obligations are determined by prescribed accounting and actuarial methods that consider a number of assumptions and estimates. The selection of appropriate assumptions and estimates is significant due to the long time period over which benefits will be accrued and paid. The long term nature of these benefit payouts increases the sensitivity of certain estimates of our post-retirement costs. The assumptions considered most sensitive in actuarially valuing ABX’s pension obligations and determining related expense amounts are discount rates and expected long term investment returns on plan assets. Additionally, other assumptions concerning retirement ages, mortality and employee turnover also affect the valuations. Actual results and future changes in these assumptions could result in future costs significantly higher than those recorded in our results of operations. The Company's net periodic benefit costs for its defined benefit pension plans and post-retirement healthcare plans for both continuing and discontinued operations are as follows (in thousands):
		Three Months Ended March 31,
		Pension Plans						Post-Retirement Healthcare Plan
		2015			2014			2015			2014
	Service cost	$	—		$	—		$	44		$	60
	Interest cost	8,646			9,879			48			71
	Expected return on plan assets	(11,020		)	(11,528		)	—			—
	Amortization of prior service cost	—			—			(136		)	(872		)
	Amortization of net (gain) loss	1,793			(1		)	73			80
	Net periodic benefit cost (gain)	$	(581	)	$	(1,650	)	$	29		$	(661	)
	During the three month period ending March 31, 2015, the Company contributed $0.6 million to the pension plans. The Company expects to contribute an additional $5.9 million during the remainder of 2015.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES
	The provision for income taxes for interim periods is based on management's best estimate of the effective income tax rate expected to be applicable for the current year, plus any adjustments arising from changes in the estimated amount of taxable income related to prior periods. Income taxes recorded through March 31, 2015 have been estimated utilizing a 38.5% rate based upon year-to-date income and projected results for the full year. The final effective tax rate applied to 2015 will depend on the actual amount of pre-tax book income generated by the Company for the full year.
	The Company has operating loss carryforwards for U.S. federal income tax purposes. Management expects to utilize the loss carryforwards to offset federal income tax liabilities in the future. Due to the Company's deferred tax assets, including its loss carryforwards, management does not expect to pay federal income taxes until 2017 or later. The Company may, however, be required to pay alternative minimum taxes and certain state and local income taxes before then.

Derivative_Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS
	The Company's Senior Credit Agreement requires the Company to maintain derivative instruments for protection from fluctuating interest rates, for at least fifty percent of the outstanding balance of term loan. Accordingly, the Company entered into interest rate swaps, which are described in the table below (in thousands):
				March 31, 2015			31-Dec-14
	Expiration Date	Stated		Notional	Market		Notional	Market
		Interest		Amount	Value		Amount	Value
		Rate			(Liability)			(Liability)
	9-May-16	2.02	%	56,250	(913	)	58,125	(1,071	)
	30-Jun-17	1.183	%	56,250	(519	)	58,125	(348	)
	The outstanding interest rate swaps are not designated as hedges for accounting purposes. The effects of future fluctuations in LIBOR interest rates on derivatives held by the Company will result in the recording of unrealized gains and losses into the statement of operations. The Company recorded net effects on derivatives of a $0.0 million loss and a $0.3 million gain for the three month periods ending March 31, 2015 and 2014, respectively. The liability for outstanding derivatives is recorded in other liabilities and in accrued expenses.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2015
Other Comprehensive Income [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	Accumulated other comprehensive income (loss) includes the following items by components for the three month periods ending March 31, 2015 and 2014 (in thousands):
		Defined Benefit Pension		Defined Benefit Post-Retirement		Gains and Losses on Derivative		Foreign Currency Translation		Total
	Balance as of December 31, 2013	(31,072	)	1,245		9		—		(29,818	)
	Amounts reclassified from accumulated other comprehensive income:
	Actuarial costs (reclassified to salaries, wages and benefits)	(1	)	80		—		—		79
	Negative prior service cost (reclassified to salaries, wages and benefits)	—		(872	)	—		—		(872	)
	Hedging gain (reclassified to interest expense)	—		—		(11	)	—		(11	)
	Income Tax (Expense) or Benefit	—		288		4		—		292
	Other comprehensive income (loss), net of tax	(1	)	(504	)	(7	)	—		(512	)
	Balance as of March 31, 2014	(31,073	)	741		2		—		(30,330	)
		Defined Benefit Pension		Defined Benefit Post-Retirement		Gains and Losses on Derivative		Foreign Currency Translation		Total
	Balance as of December 31, 2014	(81,191	)	(630	)	4		(1,059	)	(82,876	)
	Other comprehensive income (loss) before reclassifications:
	Foreign currency translation adjustment	—		—		—		(677	)	(677	)
	Amounts reclassified from accumulated other comprehensive income:
	Actuarial costs (reclassified to salaries, wages and benefits)	1,793		73		—		—		1,866
	Negative prior service cost (reclassified to salaries, wages and benefits)	—		(136	)	—		—		(136	)
	Hedging gain (reclassified to interest expense)	—		—		(9	)	—		(9	)
	Income Tax (Expense) or Benefit	(651	)	23		3		237		(388	)
	Other comprehensive income (loss), net of tax	1,142		(40	)	(6	)	(440	)	656
	Balance as of March 31, 2015	(80,049	)	(670	)	(2	)	(1,499	)	(82,220	)

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION
	The Company's Board of Directors has granted stock incentive awards to certain employees and board members pursuant to a long term incentive plan which was approved by the Company's stockholders in May 2005. Employees have been awarded non-vested stock units with performance conditions, non-vested stock units with market conditions and non-vested restricted stock. The restrictions on the non-vested restricted stock awards lapse at the end of a specified service period, which is typically approximately three years from the date of grant. Restrictions could lapse sooner upon a business combination, death, disability or after an employee qualifies for retirement. The non-vested stock units will be converted into a number of shares of Company stock depending on performance and market conditions at the end of a specified service period, lasting approximately three years. The performance condition awards will be converted into a number of shares of Company stock based on the Company's average return on invested capital during the service period. Similarly, the market condition awards will be converted into a number of shares depending on the appreciation of the Company's stock compared to the NASDAQ Transportation Index. Board members were granted time-based awards with vesting periods of approximately a six or twelve months. The Company expects to settle all of the stock unit awards by issuing new shares of stock. The table below summarizes award activity.
		Three Months Ended
		31-Mar-15				31-Mar-14
		Number of		Weighted		Number of		Weighted
		Awards		average		Awards		average
				grant-date				grant-date
				fair value				fair value
	Outstanding at beginning of period	1,406,550		$	6.21	1,477,762		$	5.83
	Granted	390,200		9.61		467,567		7.52
	Converted	(142,562	)	7.05		(68,950	)	11.17
	Expired	—		—		—		—
	Forfeited	—		—		(2,600	)	5.79
	Outstanding at end of period	1,654,188		$	6.94	1,873,779		$	6.06
	Vested	443,988		$	5.61	517,379		$	5.27
	The average grant-date fair value of each performance condition award, non-vested restricted stock award and time-based award granted by the Company in 2015 was $9.22, the fair value of the Company’s stock on the date of grant. The average grant-date fair value of each market condition award granted in 2015 was $10.99. The market condition awards were valued using a Monte Carlo simulation technique, a risk-free interest rate of 0.9% and a volatility of 41.5% based on volatility over three years using daily stock prices.
	For the three month periods ended March 31, 2015 and 2014, the Company recorded expense of $0.8 million and $0.6 million, respectively, for stock incentive awards. At March 31, 2015, there was $5.4 million of unrecognized expense related to the stock incentive awards that is expected to be recognized over a weighted-average period of 1.7 years. As of March 31, 2015, none of the awards were convertible, 443,988 units of the Board members time-based awards had vested and none of the outstanding shares of the restricted stock had vested. These awards could result in a maximum number of 1,961,038 additional outstanding shares of the Company’s common stock depending on service, performance and market results through December 31, 2017.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE
	The calculation of basic and diluted earnings per common share follows (in thousands, except per share amounts):
		Three Months Ending March 31,
		2015		2014
	Earnings from continuing operations	$	8,895	$	6,522
	Weighted-average shares outstanding for basic earnings per share	64,454		64,148
	Common equivalent shares:
	Effect of stock-based compensation awards	883		993
	Weighted-average shares outstanding assuming dilution	65,337		65,141
	Basic earnings per share from continuing operations	$	0.14	$	0.1
	Diluted earnings per share from continuing operations	$	0.14	$	0.1
	The number of equivalent shares that were not included in weighted average shares outstanding assuming dilution, because their effect would have been anti-dilutive, was none and none at March 31, 2015 and 2014, respectively.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION
	The Company operates in two reportable segments. The CAM segment consists of the Company's aircraft leasing operations and its segment earnings includes an allocation of interest expense. The ACMI Services segment consists of the Company's airline operations, including the CMI agreement with DHL as well as ACMI and charter service agreements that the Company has with other customers. Due to the similarities among the Company's airline operations, the airline operations are aggregated into a single reportable segment, ACMI Services. The Company's other activities, which include contracts with the USPS, the sale of aircraft parts and maintenance services, facility and ground equipment maintenance services and management services for workers' compensation do not constitute reportable segments and are combined in “All other” with inter-segment profit eliminations. Inter-segment revenues are valued at arms-length, market rates. Cash, cash equivalents and deferred tax assets are reflected in Assets - All other below. The Company's segment information from continuing operations is presented below (in thousands):
		Three Months Ending March 31,
		2015			2014
	Total revenues:
	CAM	$	42,854		$	40,635
	ACMI Services	105,468			108,596
	All other	35,606			26,808
	Eliminate inter-segment revenues	(36,903		)	(32,446		)
	Total	$	147,025		$	143,593
	Customer revenues:
	CAM	$	19,881		$	18,413
	ACMI Services	105,468			108,596
	All other	21,676			16,584
	Total	$	147,025		$	143,593
	Depreciation and amortization expense:
	CAM	$	20,910		$	18,345
	ACMI Services	8,091			6,835
	All other	(8		)	(201		)
	Total	$	28,993		$	24,979
	Segment earnings (loss):
	CAM	$	14,438		$	14,440
	ACMI Services	(2,571		)	(7,046		)
	All other	3,076			3,017
	Net unallocated interest expense	(457		)	(379		)
	Net gain on derivative instruments	(13		)	299
	Pre-tax earnings from continuing operations	$	14,473		$	10,331
	The Company's assets are presented below by segment (in thousands):
		March 31,			December 31,
		2015			2014
	Assets:
	CAM	$	796,980		$	801,195
	ACMI Services	141,878			135,109
	All other	$	89,533		$	95,325
	Total	$	1,028,391		$	1,031,629
	Interest expense allocated to CAM was $2.6 million and $3.3 million for the three month periods ending March 31, 2015 and 2014, respectively.

Summary_of_Financial_Statement1

Summary of Financial Statement Preparation and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	The accompanying unaudited condensed interim consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States of America and such principles are applied on a basis consistent with information reflected in our Annual Report on Form 10-K for the fiscal year ended December 31, 2014 filed with the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations promulgated by the SEC related to interim financial statements. In the opinion of management, the accompanying financial statements contain all adjustments, including normal recurring adjustments, necessary for the fair presentation of the Company’s results of operations and financial position for the periods presented. Due to seasonal fluctuations, among other factors common to the airline industry, the results of operations for the periods presented are not necessarily indicative of the results of operations to be expected for the entire year or any interim period. The preparation of consolidated financial statements requires management to make estimates and assumptions that affect amounts reported in the consolidated financial statements. The accounting estimates reflect the best judgment of management, but actual results could differ materially.
	The accompanying condensed consolidated financial statements include the accounts of Air Transport Services Group, Inc. and its wholly-owned subsidiaries. Investments in an affiliate in which the Company has significant influence but does not exercise control are accounted for using the equity method of accounting. Using the equity method, the Company’s share of the nonconsolidated affiliate's income or loss is recognized in the consolidated statement of earnings and cumulative post-acquisition changes in the investment are adjusted against the carrying amount of the investment. Inter-company balances and transactions are eliminated.
New Accounting Pronouncements	ew Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). ASU 2014-09 is a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. ASU 2014-09 also requires additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2016 unless FASB elects to delay the effective date. The Company is currently evaluating the methods of adoption allowed by the new standard and the effect the standard is expected to have on the Company's consolidated financial position, results of operations or cash flows and related disclosures.
	In April 2015, the FASB issued ASU 2015-03, "Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs" ("ASU 2015-03"). ASU 2015-03 requires debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying value of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by ASU 2015-03. The amendments in ASU 2015-03 are effective retrospectively for fiscal years, and interim periods within those years, beginning after December 15, 2015. Early adoption is permitted. The Company does not expect the impact of adopting ASU 2015-03 to be material to the Company’s financial statements and related disclosures.

Summary_of_Financial_Statement2

Summary of Financial Statement Preparation and Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Property, Plant and Equipment	Property and equipment, to be held and used, is summarized as follows (in thousands):
		March 31,			December 31,
		2015			2014
	Flight equipment	$	1,325,289		$	1,285,966
	Ground equipment	33,660			33,677
	Leasehold improvements, facilities and office equipment	25,148			25,180
	Aircraft modifications and projects in progress	14,083			18,612
		1,398,180			1,363,435
	Accumulated depreciation	(540,730		)	(516,167		)
	Property and equipment, net	$	857,450		$	847,268

Goodwill_and_Other_Intangibles1

Goodwill and Other Intangibles Goodwill and Other Intangibles (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	The Company has one reporting unit that has goodwill, CAM. The carrying amounts of goodwill are as follows (in thousands):
		CAM				Total
	Carrying value as of December 31, 2014	$	34,395			$	34,395
	Carrying value as of March 31, 2015	$	34,395			$	34,395
Schedule of Finite and Indefinite-Lived Intangible Assets by Major Class [Table Text Block]	The Company's intangible assets relate to the ACMI Services segment and are as follows (in thousands):
			Customer				Airline
			Relationships				Certificates		Total
	Carrying value as of December 31, 2014		$	1,615			$	3,000	$	4,615
	Amortization		(70		)		—		(70		)
	Carrying value as of March 31, 2015		$	1,545			$	3,000	$	4,545

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table reflects assets and liabilities that are measured at fair value on a recurring basis (in thousands):
	As of March 31, 2015	Fair Value Measurement Using							Total
		Level 1		Level 2			Level 3
	Assets
	Cash equivalents—money market	$	24	$	4,884		$	—	$	4,908
	Total Assets	$	24	$	4,884		$	—	$	4,908
	Liabilities
	Interest rate swap	$	—	$	(1,432	)	$	—	$	(1,432	)
	Total Liabilities	$	—	$	(1,432	)	$	—	$	(1,432	)
	As of December 31, 2014	Fair Value Measurement Using							Total
		Level 1		Level 2			Level 3
	Assets
	Cash equivalents—money market	$	20	$	2,306		$	—	$	2,326
	Total Assets	$	20	$	2,306		$	—	$	2,326
	Liabilities
	Interest rate swap	$	—	$	(1,419	)	$	—	$	(1,419	)
	Total Liabilities	$	—	$	(1,419	)	$	—	$	(1,419	)

Property_and_Equipment_Tables

Property and Equipment (Tables)	3 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property and equipment, to be held and used, is summarized as follows (in thousands):
		March 31,			December 31,
		2015			2014
	Flight equipment	$	1,325,289		$	1,285,966
	Ground equipment	33,660			33,677
	Leasehold improvements, facilities and office equipment	25,148			25,180
	Aircraft modifications and projects in progress	14,083			18,612
		1,398,180			1,363,435
	Accumulated depreciation	(540,730		)	(516,167		)
	Property and equipment, net	$	857,450		$	847,268

Debt_Obligations_Tables

Debt Obligations (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	Long term obligations consisted of the following (in thousands):
		March 31,			December 31,
		2015			2014
	Unsubordinated term loan	$	112,500		$	116,250
	Revolving credit facility	180,000			180,000
	Aircraft loans	44,018			46,294
	Promissory note due to DHL, unsecured	—			1,550
	Total long term obligations	336,518			344,094
	Less: current portion	(24,507		)	(24,344		)
	Total long term obligations, net	$	312,011		$	319,750

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedules of Concentration of Risk, by Risk Factor	As of March 31, 2015, the flight crewmember employees of ABX and ATI were represented by the labor unions listed below:
	Airline	Labor Agreement Unit	Percentage of
			the Company’s
			Employees
	ABX	International Brotherhood of Teamsters	11.80%
	ATI	Air Line Pilots Association	5.90%

Pension_and_Other_PostRetireme1

Pension and Other Post-Retirement Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Net Benefit Costs	The Company's net periodic benefit costs for its defined benefit pension plans and post-retirement healthcare plans for both continuing and discontinued operations are as follows (in thousands):
		Three Months Ended March 31,
		Pension Plans						Post-Retirement Healthcare Plan
		2015			2014			2015			2014
	Service cost	$	—		$	—		$	44		$	60
	Interest cost	8,646			9,879			48			71
	Expected return on plan assets	(11,020		)	(11,528		)	—			—
	Amortization of prior service cost	—			—			(136		)	(872		)
	Amortization of net (gain) loss	1,793			(1		)	73			80
	Net periodic benefit cost (gain)	$	(581	)	$	(1,650	)	$	29		$	(661	)

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives
				March 31, 2015			31-Dec-14
	Expiration Date	Stated		Notional	Market		Notional	Market
		Interest		Amount	Value		Amount	Value
		Rate			(Liability)			(Liability)
	9-May-16	2.02	%	56,250	(913	)	58,125	(1,071	)
	30-Jun-17	1.183	%	56,250	(519	)	58,125	(348	)

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2015
Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) includes the following items by components for the three month periods ending March 31, 2015 and 2014 (in thousands):
		Defined Benefit Pension		Defined Benefit Post-Retirement		Gains and Losses on Derivative		Foreign Currency Translation		Total
	Balance as of December 31, 2013	(31,072	)	1,245		9		—		(29,818	)
	Amounts reclassified from accumulated other comprehensive income:
	Actuarial costs (reclassified to salaries, wages and benefits)	(1	)	80		—		—		79
	Negative prior service cost (reclassified to salaries, wages and benefits)	—		(872	)	—		—		(872	)
	Hedging gain (reclassified to interest expense)	—		—		(11	)	—		(11	)
	Income Tax (Expense) or Benefit	—		288		4		—		292
	Other comprehensive income (loss), net of tax	(1	)	(504	)	(7	)	—		(512	)
	Balance as of March 31, 2014	(31,073	)	741		2		—		(30,330	)
		Defined Benefit Pension		Defined Benefit Post-Retirement		Gains and Losses on Derivative		Foreign Currency Translation		Total
	Balance as of December 31, 2014	(81,191	)	(630	)	4		(1,059	)	(82,876	)
	Other comprehensive income (loss) before reclassifications:
	Foreign currency translation adjustment	—		—		—		(677	)	(677	)
	Amounts reclassified from accumulated other comprehensive income:
	Actuarial costs (reclassified to salaries, wages and benefits)	1,793		73		—		—		1,866
	Negative prior service cost (reclassified to salaries, wages and benefits)	—		(136	)	—		—		(136	)
	Hedging gain (reclassified to interest expense)	—		—		(9	)	—		(9	)
	Income Tax (Expense) or Benefit	(651	)	23		3		237		(388	)
	Other comprehensive income (loss), net of tax	1,142		(40	)	(6	)	(440	)	656
	Balance as of March 31, 2015	(80,049	)	(670	)	(2	)	(1,499	)	(82,220	)

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Equity Instruments Other Than Options, Activity	The table below summarizes award activity.
		Three Months Ended
		31-Mar-15				31-Mar-14
		Number of		Weighted		Number of		Weighted
		Awards		average		Awards		average
				grant-date				grant-date
				fair value				fair value
	Outstanding at beginning of period	1,406,550		$	6.21	1,477,762		$	5.83
	Granted	390,200		9.61		467,567		7.52
	Converted	(142,562	)	7.05		(68,950	)	11.17
	Expired	—		—		—		—
	Forfeited	—		—		(2,600	)	5.79
	Outstanding at end of period	1,654,188		$	6.94	1,873,779		$	6.06
	Vested	443,988		$	5.61	517,379		$	5.27

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The calculation of basic and diluted earnings per common share follows (in thousands, except per share amounts):
		Three Months Ending March 31,
		2015		2014
	Earnings from continuing operations	$	8,895	$	6,522
	Weighted-average shares outstanding for basic earnings per share	64,454		64,148
	Common equivalent shares:
	Effect of stock-based compensation awards	883		993
	Weighted-average shares outstanding assuming dilution	65,337		65,141
	Basic earnings per share from continuing operations	$	0.14	$	0.1
	Diluted earnings per share from continuing operations	$	0.14	$	0.1

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The Company's segment information from continuing operations is presented below (in thousands):
		Three Months Ending March 31,
		2015			2014
	Total revenues:
	CAM	$	42,854		$	40,635
	ACMI Services	105,468			108,596
	All other	35,606			26,808
	Eliminate inter-segment revenues	(36,903		)	(32,446		)
	Total	$	147,025		$	143,593
	Customer revenues:
	CAM	$	19,881		$	18,413
	ACMI Services	105,468			108,596
	All other	21,676			16,584
	Total	$	147,025		$	143,593
	Depreciation and amortization expense:
	CAM	$	20,910		$	18,345
	ACMI Services	8,091			6,835
	All other	(8		)	(201		)
	Total	$	28,993		$	24,979
	Segment earnings (loss):
	CAM	$	14,438		$	14,440
	ACMI Services	(2,571		)	(7,046		)
	All other	3,076			3,017
	Net unallocated interest expense	(457		)	(379		)
	Net gain on derivative instruments	(13		)	299
	Pre-tax earnings from continuing operations	$	14,473		$	10,331
Reconciliation of Assets from Segment to Consolidated	The Company's assets are presented below by segment (in thousands):
		March 31,			December 31,
		2015			2014
	Assets:
	CAM	$	796,980		$	801,195
	ACMI Services	141,878			135,109
	All other	$	89,533		$	95,325
	Total	$	1,028,391		$	1,031,629

Significant_Customers_Details

Significant Customers (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Concentration Risk [Line Items]
Accounts receivable	44,591		$43,513
DHL [Member] | Revenues from Leases and Contracted Services [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	52.00%	56.00%
DHL [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	12,400		12,200
US Military [Member] | Revenues from Services Performed [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	16.00%	16.00%
US Military [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	8,600		$6,000

Goodwill_and_Other_Intangibles2

Goodwill and Other Intangibles (Schedule of Goodwill) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill [Roll Forward]
Carrying value, beginning balance	$34,395	$34,395
Carrying value, ending balance	34,395	34,395
CAM [Member]
Goodwill [Roll Forward]
Carrying value, beginning balance	34,395	34,395
Carrying value, ending balance	$34,395	$34,395

Goodwill_and_Other_Intangibles3

Goodwill and Other Intangibles (Schedule Intangible Assets) (Details) (ACMI Services [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	$4,615
Amortization expense	-70
Carrying value at end of period	4,545
Customer Relationships [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	1,615
Amortization expense	-70
Carrying value at end of period	1,545
Airline Certificates [Member]
Finite and Indefinite-lived Intangible Assets [Roll Forward]
Carrying value at beginning of period	3,000
Amortization expense	0
Carrying value at end of period	$3,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	$24,000	$20,000
Total Assets	24,000	20,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0	0
Total Liabilities	0	0
Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	4,884,000	2,306,000
Total Assets	4,884,000	2,306,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	-1,432,000	-1,419,000
Total Liabilities	-1,432,000	-1,419,000
Difference between fair value and carrying value, debt	-200,000	2,500,000
Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	0	0
Total Assets	0	0
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	0	0
Total Liabilities	0	0
Total [Member]
Assets, Fair Value Disclosure [Abstract]
Cash equivalents - money market	4,908,000	2,326,000
Total Assets	4,908,000	2,326,000
Liabilities, Fair Value Disclosure [Abstract]
Interest rate swap	-1,432,000	-1,419,000
Total Liabilities	-1,432,000	-1,419,000
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Liabilities, Fair Value Disclosure [Abstract]
Carrying value, debt	$336,500,000	$344,100,000

Property_and_Equipment_Schedul

Property and Equipment (Schedule of Property and Equipment) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$1,398,180	$1,363,435
Accumulated depreciation	-540,730	-516,167
Property and equipment, net	857,450	847,268
Flight Equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	1,325,289	1,285,966
Ground equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	33,660	33,677
facilities, leasehold improvements and office equipment [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	25,148	25,180
Construction in Progress [Member]
Property, Plant and Equipment, Net, by Type [Abstract]
Property and equipment, gross	$14,083	$18,612

Property_and_Equipment_Narrati

Property and Equipment (Narrative) (Details) (Flight Equipment [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
CAM [Member]
Property, Plant and Equipment [Line Items]
Leased aircraft, carrying value	$298.70	$289.50
Boeing 727 and DC-8 aircraft and flight equipment [Member]
Property, Plant and Equipment [Line Items]
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment	$0.70	$0.70

Debt_Obligations_Schedule_of_L

Debt Obligations (Schedule of Long Term Obligations) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	5-May-15
Debt Instrument [Line Items]
Total long term obligations	336,518,000	$344,094,000
Less: current portion	-24,507,000	-24,344,000
Total long term obligations, net	312,011,000	319,750,000
Unsubordinated term loan and Revolving credit facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Collateral, Coverage Percentage	150.00%
Unsubordinated term loan [Member]
Debt Instrument [Line Items]
Total long term obligations	112,500,000	116,250,000
Revolving credit facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Accordion Feature Amount			50,000,000
Total long term obligations	180,000,000	180,000,000
Aircraft loans [Member]
Debt Instrument [Line Items]
Total long term obligations	44,018,000	46,294,000
Promissory note due to DHL, unsecured [Member]
Debt Instrument [Line Items]
Total long term obligations	0	$1,550,000

Debt_Obligations_Schedule_of_L1

Debt Obligations (Schedule of Long Term Debt Maturities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Long-term Debt, Fiscal Year Maturity [Abstract]
Total long term obligations	$336,518	$344,094

Debt_Obligations_Narrative_Det

Debt Obligations (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	5-May-15	Dec. 31, 2014
Debt Instrument [Line Items]
Long term obligations	$336,518,000		$344,094,000
Unsubordinated term loan and Revolving credit facility [Member]
Debt Instrument [Line Items]
Collateral coverage percentage	150.00%
Unsubordinated term loan [Member]
Debt Instrument [Line Items]
Long term obligations	112,500,000		116,250,000
Increase in Additional Indebtedness. Long-Term Debt		50,000,000
Additional Indebtedness Long-Term Debt		150,000,000
Variable interest rate	1.93%
Revolving credit facility [Member]
Debt Instrument [Line Items]
Long term obligations	180,000,000		180,000,000
Accordion feature amount		50,000,000
Increased borrowing capacity		50,000,000
Line of Credit Facility, Maximum Borrowing Capacity		325,000,000
Variable interest rate	1.93%
Credit facility, revolving credit loan, remaining borrowing capacity	85,900,000
Letters of credit outstanding	9,100,000
Aircraft loans [Member]
Debt Instrument [Line Items]
Long term obligations	44,018,000		46,294,000
Collateralized property (in aircrafts)	6
Balloon payment percentage	20.00%
Variable interest rate, minimum	6.74%
Variable interest rate, maximum	7.36%
Promissory note due to DHL, unsecured [Member]
Debt Instrument [Line Items]
Long term obligations	0		1,550,000
Maximum [Member] | Unsubordinated term loan and Revolving credit facility [Member]
Debt Instrument [Line Items]
Collateral coverage percentage	175.00%
Maximum amount of common stock authorized for repurchase	$50,000,000
Minimum [Member] | Unsubordinated term loan and Revolving credit facility [Member]
Debt Instrument [Line Items]
Collateral coverage percentage	50.00%

Commitments_and_Contingencies_1

Commitments and Contingencies (Litigation) (Details) (Brussels Instituut voor Milieubeheer [Member])	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2015
	USD ($)	EUR (€)
Loss Contingencies [Line Items]
Administrative penalty amount	$0.40	€ 0.40

Commitments_and_Contingencies_2

Commitments and Contingencies (Labor Unions) (Details) (Workforce Subject to Collective Bargaining Arrangements [Member], Labor Unions [Member])	3 Months Ended
	Mar. 31, 2015
ABX [Member]
Concentration Risk [Line Items]
Percentage of the Company's Employees	11.80%
ATI [Member]
Concentration Risk [Line Items]
Percentage of the Company's Employees	5.90%

Pension_and_Other_PostRetireme2

Pension and Other Post-Retirement Benefit Plans (Funded Status) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Pension Plans [Member]
Change in benefit obligation [Roll Forward]
Service cost	$0	$0
Interest cost	8,646	9,879
Change in plan assets [Roll Forward]
Employer contributions	644
Post-Retirement Healthcare Plans [Member]
Change in benefit obligation [Roll Forward]
Service cost	44	60
Interest cost	$48	$71

Pension_and_Other_PostRetireme3

Pension and Other Post-Retirement Benefit Plans (Net Periodic Benefit Costs) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Pension Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$0	$0
Interest cost	8,646	9,879
Expected return on plan assets	-11,020	-11,528
Amortization of prior service cost	0	0
Amortization of net (gain) loss	1,793	-1
Net periodic benefit cost (gain)	-581	-1,650
Post-Retirement Healthcare Plans [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	44	60
Interest cost	48	71
Expected return on plan assets	0	0
Amortization of prior service cost	-136	-872
Amortization of net (gain) loss	73	80
Net periodic benefit cost (gain)	$29	($661)

Pension_and_Other_PostRetireme4

Pension and Other Post-Retirement Benefit Plans (Cash Flows) (Details) (Pension Plans [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$644,000
Estimated future employer contributions	$5,900,000

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015
	Rate
Income Tax Disclosure [Line Items]
Effective Income Tax Rate Reconciliation, Percent	-38.50%

Income_Taxes_Income_Tax_Provis

Income Taxes (Income Tax Provision (Benefit)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Total income tax expense from continuing operations	$5,578	$3,809

Income_Taxes_Tax_Rate_Reconcil

Income Taxes (Tax Rate Reconciliation) (Details)	3 Months Ended
	Mar. 31, 2015
	Rate
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Effective income tax rate	-38.50%

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Derivative [Line Items]
Pre-tax (charge) on derivative instruments	($13)	$299
Net gain on derivative instruments	13	-299
May 9, 2016 [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	2.02%
Market Value (Liability)	-913		-1,071
Derivative Liability, Notional Amount	56,250		58,125
June 30, 2017 [Member] [Member] | Swap [Member]
Derivative [Line Items]
Stated Interest Rate	1.18%
Market Value (Liability)	-519		-348
Derivative Liability, Notional Amount	$56,250		$58,125

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Schedule of Accumulated Other Comprehensive Income [Line Items]
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	($1,499)		($1,059)
Accumulated other comprehensive income (loss), beginning balance	-82,876	-29,818
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	-677
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	237
Amounts reclassified from accumulated other comprehensive income:
Actuarial costs (reclassified to salaries, wages and benefits)	1,866	79
Negative prior service cost (reclassified to salaries, wages and benefits)	-136	-872
Hedging gain (reclassified to interest expense)	-9	-11
Income Tax (Expense) or Benefit	3	4
Income Tax (Expense) or Benefit	-388	292
Other comprehensive income (loss), net of tax	-6	-7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	-440	0
Other comprehensive income (loss), net of tax	656	-512
Accumulated other comprehensive income (loss), ending balance	-82,220	-30,330
Total comprehensive income (loss)	9,765	6,221
Pension Plans [Member]
Schedule of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss), beginning balance	-81,191	-31,072
Amounts reclassified from accumulated other comprehensive income:
Actuarial costs (reclassified to salaries, wages and benefits)	1,793	-1
Income Tax (Expense) or Benefit	-651	0
Other comprehensive income (loss), net of tax	1,142	-1
Accumulated other comprehensive income (loss), ending balance	-80,049	-31,073
Post-Retirement Plans [Member]
Schedule of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss), beginning balance	-630	1,245
Amounts reclassified from accumulated other comprehensive income:
Actuarial costs (reclassified to salaries, wages and benefits)	73	80
Negative prior service cost (reclassified to salaries, wages and benefits)	-136	-872
Income Tax (Expense) or Benefit	23	288
Other comprehensive income (loss), net of tax	-40	-504
Accumulated other comprehensive income (loss), ending balance	-670	741
Derivative [Member]
Schedule of Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss), beginning balance			4	9
Amounts reclassified from accumulated other comprehensive income:
Accumulated other comprehensive income (loss), ending balance	($2)	$2	$4	$9

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period (in shares)	1,406,550	1,477,762
Granted (in shares)	390,200	467,567
Converted (in shares)	-142,562	-68,950
Expired (in shares)	0	0
Forfeited (in shares)	0	-2,600
Outstanding at end of period (in shares)	1,654,188	1,873,779
Vested (in shares)	443,988	517,379
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Outstanding at beginning of period, Weighted average grant-date fair value (in dollars per share)	$6.21	$5.83
Granted, Weighted average grant-date fair value (in dollars per share)	$9.61	$7.52
Converted, Weighted average grant-date fair value (in dollars per share)	$7.05	$11.17
Expired, Weighted average grant-date fair value (in dollars per share)	$0	$0
Forfeited, Weighted average grant-date fair value (in dollars per share)	$0	$5.79
Outstanding at end of period, Weighted average grant-date fair value (in dollars per share)	$6.94	$6.06
Vested (in dollars per share)	$5.61	$5.27
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based compensation expense	$0.80	$0.60
Unrecognized share-based compensation expense	$5.40
Unrecognized share-based compensation, weighted average recognition period	1 year 8 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted average grant-date fair value (in dollars per share)	$9.22
Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Historical volatility period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.90%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	41.50%
Market Condition Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted average grant-date fair value (in dollars per share)	$10.99
Performance Condition Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted average grant-date fair value (in dollars per share)	$9.22
Time-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Granted, Weighted average grant-date fair value (in dollars per share)	$9.22
Time-Based Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Number of additional outstanding shares issued (in shares)	1,961,038
Director [Member] | Time-Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Vested (in shares)	443,988
Director [Member] | Time-Based Awards [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	6 months
Director [Member] | Time-Based Awards [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	12 months

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share Reconciliation [Abstract]
Earnings from continuing operations	$8,895	$6,522
Weighted-average shares outstanding for basic earnings per share (in shares)	64,454,000	64,148,000
Common equivalent shares:
Effect of stock-based compensation awards (in shares)	883,000	993,000
Weighted-average shares outstanding assuming dilution (in shares)	65,337,000	65,141,000
Basic earnings per share from continuing operations (in dollars per share)	$0.14	$0.10
Diluted earnings per share from continuing operations (in dollars per share)	$0.14	$0.10
Anti-dilutive securities excluded from computation of earnings per share (in shares)	0	0

Segment_Information_Segment_Re

Segment Information (Segment Reconciliation) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
REVENUES	$147,025	$143,593
Customer revenues	147,025	143,593
Depreciation and amortization expense	28,993	24,979
Net unallocated interest expense	-3,065	-3,823
Net gain (loss) on derivative instruments	-13	299
Pre-tax earnings from continuing operations	14,473	10,331
Assets	1,028,391		1,031,629
Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	147,025	143,593
Customer revenues	147,025	143,593
CAM [Member]
Segment Reporting Information [Line Items]
REVENUES	42,854	40,635
Customer revenues	42,854	40,635
Depreciation and amortization expense	20,910	18,345
Segment earnings (loss)	14,438	14,440
Net unallocated interest expense	-2,600	-3,300
Assets	796,980		801,195
CAM [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	19,881	18,413
Customer revenues	19,881	18,413
ACMI Services [Member]
Segment Reporting Information [Line Items]
REVENUES	105,468	108,596
Customer revenues	105,468	108,596
Depreciation and amortization expense	8,091	6,835
Segment earnings (loss)	-2,571	-7,046
Assets	141,878		135,109
ACMI Services [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	105,468	108,596
Customer revenues	105,468	108,596
All other [Member]
Segment Reporting Information [Line Items]
REVENUES	35,606	26,808
Customer revenues	35,606	26,808
Depreciation and amortization expense	-8	-201
Segment earnings (loss)	3,076	3,017
Assets	89,533		95,325
All other [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	21,676	16,584
Customer revenues	21,676	16,584
Significant Reconciling Items [Member]
Segment Reporting Information [Line Items]
Net unallocated interest expense	-457	-379
Eliminate inter-segment revenues [Member]
Segment Reporting Information [Line Items]
REVENUES	-36,903	-32,446
Customer revenues	($36,903)	($32,446)

Segment_Information_Narrative_

Segment Information (Narrative) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	segments
Segment Reporting Information [Line Items]
Number of reportable segments (in segments)	2
Interest expense	$3,065	$3,823
CAM [Member]
Segment Reporting Information [Line Items]
Interest expense	$2,600	$3,300

Segment_Information_EntityWide

Segment Information (Entity-Wide Disclosures) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting Information [Line Items]
Customer revenues	$147,025	$143,593
Customer Revenues [Member]
Segment Reporting Information [Line Items]
Customer revenues	147,025	143,593
All other [Member]
Segment Reporting Information [Line Items]
Customer revenues	35,606	26,808
All other [Member] | Customer Revenues [Member]
Segment Reporting Information [Line Items]
Customer revenues	$21,676	$16,584