Annual report pursuant to Section 13 and 15(d)

AIRCRAFT AND ENGINES HELD FOR LEASE AND LEASE RENTAL - Components (Details)

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AIRCRAFT AND ENGINES HELD FOR LEASE AND LEASE RENTAL - Components (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Impairment of leased assets $ 0 $ 900 $ 0
Depreciation expense 4,597 6,606 8,869
Contingent rental fees 7,693 12,776 $ 8,218
Aircraft and Engines      
Aircraft and engines held for lease 58,136 83,902  
Less accumulated depreciation (31,661) (52,614)  
Property held for operating leases, net 26,475 $ 31,288  
Flight Equipment      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Operating leases $ 5,100    
Flight Equipment | Minimum      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Lease term (in months) 2 months    
Flight Equipment | Maximum      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Lease term (in months) 9 months