Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 416,816	$ 343,328
Accounts receivable, net	22,740	15,425
Deferred income taxes	12,591	20,738
Other current assets	95,210	63,217
Total current assets	547,357	442,708
Property and equipment:
Flight equipment	2,648	4,182
Ground and other equipment	43,580	46,608
Less accumulated depreciation	(17,825)	(27,580)
Total property and equipment	28,403	23,210
Deposits on flight equipment purchase contracts	96,692	91,450
Aircraft maintenance deposits	122,379	120,615
Deferred heavy maintenance and other long-term assets	125,053	67,830
Total assets	919,884	745,813
Current liabilities:
Accounts payable	24,166	15,928
Air traffic liability	131,414	112,280
Other current liabilities	121,314	98,856
Total current liabilities	276,894	227,064
Long-term deferred income taxes	33,216	12,108
Deferred credits and other long-term liabilities	27,239	39,935
Shareholders’ equity:
Additional paid-in-capital	504,527	496,136
Treasury stock, at cost	(1,151)	(129)
Retained earnings (deficit)	79,152	(29,308)
Total shareholders’ equity	582,535	466,706
Total liabilities and shareholders’ equity	919,884	745,813
Common Stock
Shareholders’ equity:
Common stock	6	6
Non-Voting Common Stock
Shareholders’ equity:
Common stock	$ 1	$ 1