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MORTGAGE BANKING OPERATIONS - MF MSR Roll Forward (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Servicing Asset at Amortized Value, Balance [Roll Forward]      
Beginning balance $ 35,774 $ 29,494 $ 28,328
Origination 11,222 11,587 5,832
Amortization (7,581) (5,307) (4,666)
Ending balance $ 39,415 $ 35,774 $ 29,494