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Servicing Rights - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Commercial servicing rights          
Servicing Assets at Fair Value [Line Items]          
Servicing rights $ 2,118   $ 2,118   $ 2,129
Commercial loans serviced for a third party 283,700   $ 283,700   $ 285,300
Constant prepayment rate (percent)     10.19%   10.19%
Discount rate (percent)     12.00%   12.00%
Other Noninterest Income          
Servicing Assets at Fair Value [Line Items]          
Mortgage servicing fees $ 937 $ 858 $ 2,700 $ 2,400