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Income Taxes - Summary of Unrecognized Tax Benefits and Temporary Differences (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Unrecognized tax benefits    
Balance at the beginning of the period $ 449 $ 19
Increases related to current year tax positions 123 435
Decreases due to tax positions expired (5) (5)
Balance at the end of the period 567 449
Deferred tax assets:    
Unearned lease revenue 8,335 9,614
State taxes 590 167
Inventory 2,770 2,426
Reserves and allowances 4,629 5,471
Other accruals 46,144 29,231
Lease liability 584 934
Net operating loss carry forward 40,906 51,240
Charitable contributions 0 2
Total deferred tax assets 103,958 99,085
Less: valuation allowance (3,137) (978)
Net deferred tax assets 100,821 98,107
Deferred tax liabilities:    
Depreciation and impairment on aircraft engines and equipment (272,492) (231,694)
Notes receivable (5,181) (5,405)
Lease liability (597) (930)
Other deferred tax liabilities (5,619) (4,622)
Net deferred tax liabilities (283,889) (242,651)
Other comprehensive income deferred tax liability (1,981) (3,235)
Net deferred tax liabilities (185,049) $ (147,779)
Operating loss carryforwards 3,100  
Valuation allowance of net operating loss 2,700  
Net change in the total valuation allowance 2,200  
Federal    
Deferred tax liabilities:    
Operating loss carryforwards 177,400  
State    
Deferred tax liabilities:    
Operating loss carryforwards 700  
State | California Franchise Tax Board    
Deferred tax liabilities:    
Valuation allowance of net operating loss 400  
State | Georgia Department of Revenue    
Deferred tax liabilities:    
Valuation allowance of net operating loss 100  
Foreign Tax Jurisdiction    
Deferred tax liabilities:    
Operating loss carryforwards $ 12,200