Condensed Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Assets, Current [Abstract]    
Cash and cash equivalents $ 418,263 $ 394,643
Credit card holdbacks and receivables 51,525 9,563
Other receivables, net 12,955 13,851
Prepaid expenses and other assets 33,809 20,874
Total current assets 516,552 438,931
Property and equipment:    
Flight equipment 80,631 76,724
Ground and other equipment 73,510 70,754
Less accumulated depreciation and amortization (78,365) (74,271)
Property, Plant and Equipment, Net 75,776 73,207
Pre-delivery payments for flight equipment 103,568 94,280
Total property and equipment, net 179,344 167,487
Noncurrent Assets    
Aircraft maintenance deposits 213,753 211,946
Aircraft lease deposits 50,005 50,758
Restricted cash 18,775 18,775
Other non-current assets 120,579 112,279
Assets, Noncurrent 403,112 393,758
Total assets 1,099,008 1,000,176
Current liabilities:    
Accounts payable 51,735 52,821
Air traffic liability 230,220 150,479
Other current liabilities 87,367 100,723
Long-term debt-current portion 47,757 33,824
Total current liabilities 417,079 337,847
Long-term debt-related parties 39,655 38,848
Long-term debt 50,450 57,416
Other long-term liabilities 106,183 106,812
Total liabilities 613,367 540,923
Contingencies and commitments      
Preferred stock 0 0
Common stock 432 431
Additional paid-in capital 1,239,328 1,237,944
Accumulated deficit (740,230) (753,016)
Accumulated other comprehensive loss (13,889) (26,106)
Total stockholders’ equity 485,641 459,253
Total liabilities and stockholders’ equity $ 1,099,008 $ 1,000,176