Leases and Prepaid Maintenance Deposits - Future Minimum Lease Payments Under Noncancelable Operating Leases (Details) (USD $)	Dec. 31, 2012
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	$ 168,357
2014	166,539
2015	164,919
2016	160,354
2017	135,628
2018 and thereafter	379,027
Total minimum lease payments	1,174,824
Aircraft and Spare Engine Leases
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	152,558
2014	152,575
2015	152,961
2016	152,801
2017	131,849
2018 and thereafter	358,310
Total minimum lease payments	1,101,054
Property Facility Leases
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2013	15,799
2014	13,964
2015	11,958
2016	7,553
2017	3,779
2018 and thereafter	20,717
Total minimum lease payments	$ 73,770