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Related Party Transactions (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Related Party Transaction [Line Items]        
Net charter expense $ 95,177 $ 201,282 $ 226,434 $ 433,687
Conversion ratio, preferred stock to common stock     1  
Percentage of tax benefits realized payable 85.00%   85.00%  
Percentage retained under tax receivable agreement     15.00%  
Tax receivable agreement, liability $ 85,600   $ 85,600  
Tax receivable agreement, liability, discount rate 4.86%   4.86%  
Affiliated Entity        
Related Party Transaction [Line Items]        
Rent expense $ 1,800 2,000 $ 4,500 4,000
Western Airways        
Related Party Transaction [Line Items]        
Net charter expense $ 500 $ 400 $ 500 $ 800