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Mortgage Servicing Rights - Weighted-Average Key Assumptions to Estimate Fair Value of Mortgage Servicing Rights (Details) - uSDPerLoan
6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Transfers and Servicing [Abstract]      
Discount rate 11.19% 9.42% 9.85%
Total prepayment speeds 7.56% 7.97% 7.40%
Cost of servicing each loan 89 87 88