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Leases - Annual Future Minimum Obligations for Operating Leases Other than Arrangements with Commercial Airline Partners (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Operating Leases    
2020 (period from April 1 to December 31) $ 12,456  
2021 20,566  
2022 18,994  
2023 15,023  
2024 11,451  
Thereafter 56,550  
Total future minimum lease payments 135,040  
Less: Amount representing interest (42,581)  
Present value of net minimum lease payments 92,459  
Accrued liabilities 9,484 $ 12,241
Non-current operating lease liabilities 82,975 $ 77,808
Total lease liabilities 92,459  
Financing Leases    
2020 (period from April 1 to December 31) 529  
2021 530  
2022 451  
Total future minimum lease payments 1,510  
Less: Amount representing interest (124)  
Present value of net minimum lease payments 1,386  
Accrued liabilities 543  
Other non-current liabilities 843  
Total lease liabilities $ 1,386