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Income Taxes - Summary of Unrecognized Tax Benefits and Temporary Differences (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Unrecognized tax benefits    
Balance at the beginning of the period $ 13 $ 330
Decreases related to current year tax positions 11 0
Decreases due to tax positions expired (5) (317)
Balance at the end of the period 19 13
Deferred tax assets:    
Unearned lease revenue 3,867 2,217
State taxes 2 0
Inventory 2,123 1,486
Reserves and allowances 4,425 6,781
Other accruals 15,973 2,577
Lease liability 1,366 146
Net operating loss carry forward 67,595 68,168
California alternative minimum tax credit 33 33
Charitable contributions 2 2
Total deferred tax assets 95,386 81,410
Less: valuation allowance (536) (518)
Net deferred tax assets 94,850 80,892
Deferred tax liabilities:    
Depreciation and impairment on aircraft engines and equipment (208,389) (183,131)
Notes receivable (5,479) (15,911)
Right of use liability (1,360) (139)
Other deferred tax liabilities (4,590) (4,595)
Net deferred tax liabilities (219,818) (203,776)
Other comprehensive income deferred tax liability (7,548) (1,448)
Net deferred tax liabilities (132,516) $ (124,332)
Undistributed earnings of foreign subsidiaries 6,200  
Federal    
Deferred tax liabilities:    
Operating loss carryforwards 315,900  
State    
Deferred tax liabilities:    
Operating loss carryforwards 1,300  
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