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Fair Value Measurements - Schedule of Sensitivity Analysis for Servicing Rights (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Market servicing costs    
2.5 basis points increase $ (10,280) $ (10,395)
5.0 basis points increase (20,559) (20,807)
Conditional prepayment rate    
10% increase (3,370) (4,036)
20% increase (6,770) (7,833)
Annual default rate    
10% increase (153) (166)
20% increase (305) (331)
Discount rate    
100 basis points increase (4,021) (3,905)
200 basis points increase $ (7,787) $ (7,562)