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