Condensed Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 588,474	$ 530,631
Accounts receivable, net	26,515	23,246
Deferred income taxes	15,166	16,243
Prepaid expenses and other current assets	73,969	78,955
Total current assets	704,124	649,075
Property and equipment:
Flight equipment	16,064	9,847
Ground and other equipment	69,676	50,987
Less accumulated depreciation	(32,345)	(25,221)
Total property and equipment	53,395	35,613
Deposits on flight equipment purchase contracts	269,693	157,669
Aircraft maintenance deposits	194,867	161,484
Deferred heavy maintenance, net	128,304	125,288
Other long-term assets	63,171	51,636
Total assets	1,413,554	1,180,765
Current liabilities:
Accounts payable	17,954	23,104
Air traffic liability	216,477	167,627
Other current liabilities	160,386	145,262
Total current liabilities	394,817	335,993
Long-term deferred income taxes	47,443	48,916
Deferred credits and other long-term liabilities	25,979	26,739
Shareholders’ equity:
Common stock	7	7
Additional paid-in-capital	523,476	515,331
Treasury stock	(3,792)	(2,291)
Retained earnings	425,624	256,070
Total shareholders’ equity	945,315	769,117
Total liabilities and shareholders’ equity	$ 1,413,554	$ 1,180,765