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AIRCRAFT - Depreciation, Amortization, and Rent Expense on Aircraft (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
AIRCRAFT - Owned and Leased    
Depreciation amortization and aircraft rent $ 19,625 $ 20,070
Owned    
AIRCRAFT - Owned and Leased    
Depreciation 14,419 14,340
Finance leases    
AIRCRAFT - Owned and Leased    
Amortization $ 5,206 $ 5,730