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Fair Value of Assets and Liabilities - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Segment Reporting Information [Line Items]        
Leased asset impairments $ 0 $ 0 $ 0 $ 0
Fixed asset impairments $ 0 $ 0 $ 0 0
Minimum | SBA interest-only strips | Trading Securities        
Segment Reporting Information [Line Items]        
Write down percentage based on time in default 20.00%   20.00%  
Maximum | SBA interest-only strips | Trading Securities        
Segment Reporting Information [Line Items]        
Write down percentage based on time in default 100.00%   100.00%  
Level 3        
Segment Reporting Information [Line Items]        
Fair value, asset (liability), unrealized gain (loss), OCI     $ 0 $ 0