Significant Customers (Details) (USD $) In Thousands, unless otherwise specified				6 Months Ended					6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 CAM [Member] Boeing 767 Freighter Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts	Jun. 30, 2012 CMI Agreement [Member] CAM [Member] Boeing 767 Freighter Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts	Jun. 30, 2012 Aircraft Leases [Member] CAM [Member] Boeing 767 Freighter Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member]	Jun. 30, 2012 Other Contracts [Member] Boeing 767 Freighter Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts	Jun. 30, 2012 Other Contracts [Member] Boeing 727 Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts	Jun. 30, 2012 Other Contracts [Member] Boeing 757 Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts	Jun. 30, 2012 Maximum [Member] Other Contracts [Member] Aircraft and Flight Equipment [Member] DHL [Member]	Jun. 30, 2012 Minimum [Member] CMI Agreement [Member] CAM [Member] Boeing 767 Freighter Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member]	Jun. 30, 2012 Revenues from Leases and Contracted Services [Member] DHL [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Leases and Contracted Services [Member] DHL [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Revenues from Leases and Contracted Services [Member] DHL [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Leases and Contracted Services [Member] DHL [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Revenues from Services Performed [Member] BAX/Schenker [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Services Performed [Member] BAX/Schenker [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Revenues from Services Performed [Member] BAX/Schenker [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Services Performed [Member] BAX/Schenker [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Revenues from Services Performed [Member] US Military [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Services Performed [Member] US Military [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Revenues from Services Performed [Member] US Military [Member] Customer Concentration Risk [Member]	Jun. 30, 2011 Revenues from Services Performed [Member] US Military [Member] Customer Concentration Risk [Member]	Jun. 30, 2012 Accounts Receivable [Member] DHL [Member]	Dec. 31, 2011 Accounts Receivable [Member] DHL [Member]	Jun. 30, 2012 Accounts Receivable [Member] BAX/Schenker [Member]	Dec. 31, 2011 Accounts Receivable [Member] BAX/Schenker [Member]	Jun. 30, 2012 Accounts Receivable [Member] US Military [Member]	Dec. 31, 2011 Accounts Receivable [Member] US Military [Member]	Jun. 30, 2012 Multi Year Contract [Member] Other Contracts [Member] Boeing 757 Aircraft [Member] Aircraft and Flight Equipment [Member] DHL [Member] aircrafts
Concentration Risk [Line Items]
Number of leased aircrafts (in aircrafts)			13	4		7	4	1																					2
Lease term				5 years	7 years				1 year
Lease maintenance term										3 years
Percentage of consolidated revenues											54.00%	34.00%	52.00%	35.00%	0.00%	31.00%	0.00%	32.00%	16.00%	12.00%	16.00%	11.00%
Accounts receivable	$ 39,817	$ 42,278																					$ 18,100	$ 9,800	$ 0	$ 5,500	$ 4,300	$ 5,200