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Intangible Assets - Changes in Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Changes in mortgage servicing rights        
Balance at beginning of period     $ 2,899  
Changes in fair value:        
Balance at end of period $ 2,885   2,885  
Mortgage Servicing Rights        
Changes in mortgage servicing rights        
Balance at beginning of period 2,902 $ 2,730 2,899 $ 2,659
Originated mortgage servicing rights 8 21 38 61
Changes in fair value:        
Due to changes in model inputs and assumptions 45 228 145 418
Other changes in fair value (70) (73) (197) (232)
Total changes in fair value (25) 155 (52) 186
Balance at end of period $ 2,885 $ 2,906 $ 2,885 $ 2,906