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Mortgage Servicing Rights - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Transfers and Servicing [Abstract]      
Moving average of weekly prepayment data (in months) 3 months    
Anticipated loan prepayment rate of servicing assets (in hundredths) 8.11%    
Servicing assets and servicing liabilities at fair value, assumptions used to estimate fair value, discount rate adjustment factor (in hundredths) 9.00%    
Mortgage servicing rights capitalized $ 169 $ 328  
Amortization of mortgage servicing rights 183 151  
Fair value of mortgage servicing rights 3,435 2,608 $ 3,041
Outstanding principal balance of loans serviced for others $ 357,494 $ 335,938 $ 356,522