Related-Party Transactions (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Nov. 30, 2014
Oct. 31, 2014
Dec. 31, 2014
Related Party Transaction [Line Items]          
Percentage owned by related parties 28.80%        
Long-term debt $ 137,900,000        
Related-party interest expense 806,000 9,345,000      
Virgin Group | Line of Credit | Letter of Credit          
Related Party Transaction [Line Items]          
Maximum borrowing capacity 100,000,000        
Line of credit commitment fee percentage 5.00%        
Commitment fee 1,400,000        
VX Holdings L.P.          
Related Party Transaction [Line Items]          
Ownership percentage 19.00%        
Cyrus Aviation Holdings, LLC          
Related Party Transaction [Line Items]          
Ownership percentage 28.90%        
Principal Owner | Virgin Group          
Related Party Transaction [Line Items]          
Carrying value of related party debt     38,500,000 728,300,000  
Affiliated Entity | Virgin Enterprises Limited          
Related Party Transaction [Line Items]          
Number of Board of Director designees 1        
License Fees | Affiliated Entity          
Related Party Transaction [Line Items]          
License fees 1,600,000 1,600,000      
Accrued Unpaid Royalty Fees | Affiliated Entity          
Related Party Transaction [Line Items]          
Accrued unpaid royalty fees $ 1,600,000       $ 1,800,000