Income Taxes - Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Net operating loss	$ 0	$ 252
Deferred revenue	3,381	410
Nondeductible accruals	11,056	12,239
Deferred manufacturing credits	822	848
Unrealized (gain) loss on derivatives, net	0	1,865
Accrued maintenance	830	3,073
Equity compensation	4,485	4,514
Other	2,751	661
Deferred tax assets	23,325	23,862
Deferred tax liabilities:
Capitalized interest	286	568
Deferred gain (loss) on leases, net	2,393	2,349
Accrued rent	6,724	2,560
Prepaid expenses	2,151	1,681
Property, plant and equipment	168,813	37,369
Accrued aircraft and engine maintenance	64,439	45,702
Deferred tax liabilities	244,806	90,229
Net deferred tax assets (liabilities)	$ (221,481)	$ (66,367)