Leases and Prepaid Maintenance Deposits (Tables)

12 Months Ended

Dec. 31, 2012

Leases And Prepaid Maintenance Deposits [Abstract]

Future minimum lease payments under noncancelable operating leases

Future minimum lease payments under noncancelable operating leases with initial or remaining terms in excess of one year at December 31, 2012 were as follows:

	Operating Leases
As of December 31,	Aircraft and Spare Engine Leases		Property Facility Leases		Total Operating Leases
	(in thousands)
2013	$	152,558	$	15,799	$	168,357
2014	152,575		13,964		166,539
2015	152,961		11,958		164,919
2016	152,801		7,553		160,354
2017	131,849		3,779		135,628
2018 and thereafter	358,310		20,717		379,027
Total minimum lease payments	$	1,101,054	$	73,770	$	1,174,824