Leases and Prepaid Maintenance Deposits (Tables)

12 Months Ended

Dec. 31, 2015

Leases [Abstract]

Schedule of future minimum rental payments for noncancellable operating leases

Future minimum lease payments under noncancellable operating leases with initial or remaining terms in excess of one year at December 31, 2015 were as follows:

	Operating Leases
	Aircraft and Spare Engine Leases		Property Facility Leases		Total Operating Leases
	(in thousands)
2016	$	213,491	$	27,340	$	240,831
2017	201,485		26,364		227,849
2018	177,697		29,820		207,517
2019	150,333		28,733		179,066
2020	139,992		20,546		160,538
2021 and thereafter	494,104		70,199		564,303
Total minimum lease payments	$	1,377,102	$	203,002	$	1,580,104