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Investments - Additional Information (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
USD ($)
engine
aircraft
asset
Dec. 31, 2021
USD ($)
engine
asset
Schedule of Equity Method Investments [Line Items]    
ROU assets $ 11,382 $ 6,067
Total lease liabilities 10,365 5,206
Equipment Held For Operating Lease    
Schedule of Equity Method Investments [Line Items]    
Net book value $ 2,111,935 $ 1,991,368
WMES    
Schedule of Equity Method Investments [Line Items]    
Ownership interest 50.00%  
Number of engines in lease portfolio | engine 35  
Number of aircraft in lease portfolio | aircraft 5  
Number of assets sold | engine 2 2
Proceeds from sale of assets $ 12,600 $ 25,000
WMES | Equipment Held For Operating Lease    
Schedule of Equity Method Investments [Line Items]    
Net book value $ 255,500  
CASC Willis    
Schedule of Equity Method Investments [Line Items]    
Ownership interest 50.00%  
Number of engines in lease portfolio | engine 4  
Number of assets sold | asset 0 0
CASC Willis | Equipment Held For Operating Lease    
Schedule of Equity Method Investments [Line Items]    
Net book value $ 42,700