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Servicing Rights - Servicing Rights (Details) - Mortgage servicing rights - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Servicing Asset at Fair Value, Amount [Roll Forward]    
Beginning balance $ 10,429 $ 6,795
Additions 5,400 5,971
Servicing rights amortized (4,177) (2,337)
Impairment on servicing rights (92) 0
Ending balance $ 11,560 $ 10,429