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Related Party Transactions (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 26, 2016 | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($)
Related Party Transaction [Line Items] |  |  |  |  |  |
Net book value associated with buildings |  | $ 497,784 |  | $ 497,784 |  | $ 567,024
Net charter expense |  | $ (92,547) | $ (85,698) | $ (272,402) | $ (312,132) |
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% |  |
Cumulative deficit, period (in months) |  |  |  | 36 months |  |
Tax receivable agreement, liability |  | $ 2,100 |  | $ 2,100 |  |
Estimated termination payment |  | $ 102,000 |  | $ 102,000 |  |
Discount rate, tax receivable agreement liability |  | 5.63% |  | 5.63% |  |
Buildings and improvements |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Estimated useful life (in years) |  |  |  | 39 years |  |
Affiliated Entity |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Lessee, operating lease, renewal term (in months) |  |  |  | 36 months |  |
Rent expense |  | $ 1,800 | 1,800 | $ 5,300 | 6,200 |
Affiliated Entity | Buildings and improvements |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Net book value associated with buildings |  | 62,700 |  | 62,700 |  |
Affiliated Entity | Leasehold improvements |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Net book value associated with buildings |  | 13,400 |  | 13,400 |  |
Western Airways |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Net charter expense |  | $ 400 | $ 300 | $ 1,000 | $ 800 |

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