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Leases (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
USD ($)
Aircraft
Dec. 31, 2019
USD ($)
Leases [Abstract]    
Operating Leased Assets, Number of Units | Aircraft 3  
Finance Leased Assets, Number of Units | Aircraft 5  
operating right of use asset, net $ 70,260 $ 22,081
Finance Lease, Right-of-Use Asset 110,036 111,665
Total Right-of-Use Asset 180,296 133,746
Operating Lease, Liability, Current 5,954 2,662
Finance Lease, Liability, Current 7,750 7,666
Operating Lease, Liability, Noncurrent 66,545 21,290
Finance Lease, Liability, Noncurrent 105,960 107,930
Total Lease Liability $ 186,209 $ 139,548