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Significant Customers (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Concentration Risk [Line Items]      
Accounts receivable 44,591us-gaap_AccountsReceivableNetCurrent   $ 43,513us-gaap_AccountsReceivableNetCurrent
DHL [Member] | Revenues from Leases and Contracted Services [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Percentage of consolidated revenues 52.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= atsg_RevenueLeasesAndContractedServicesMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atsg_DhlMember		 56.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= atsg_RevenueLeasesAndContractedServicesMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atsg_DhlMember		  
DHL [Member] | Accounts Receivable [Member]      
Concentration Risk [Line Items]      
Accounts receivable 12,400us-gaap_AccountsReceivableNetCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= atsg_DhlMember		   12,200us-gaap_AccountsReceivableNetCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= atsg_DhlMember
US Military [Member] | Revenues from Services Performed [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Percentage of consolidated revenues 16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atsg_UsMilitaryMember		 16.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= atsg_UsMilitaryMember		  
US Military [Member] | Accounts Receivable [Member]      
Concentration Risk [Line Items]      
Accounts receivable 8,600us-gaap_AccountsReceivableNetCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= atsg_UsMilitaryMember		   $ 6,000us-gaap_AccountsReceivableNetCurrent
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_MajorCustomersAxis
= atsg_UsMilitaryMember