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Assumptions Used in Determining MSR Value (Details)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]    
Prepayment speed 0.1160 0.1560
Average life 6 years 7 months 20 days 5 years 3 months 18 days
Discount rate 0.0950 0.0950