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Intangible Assets - FV Assumptions (Details) - Mortgage servicing rights
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Assumptions used in estimating the fair value of mortgage service rights    
Weighted average constant prepayment rate 10.65% 15.74%
Weighted average note rate 3.37% 3.55%
Weighted average discount rate 8.00% 7.75%
Weighted average expected life (in years) 6 years 1 month 6 days 4 years 9 months 18 days