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Servicing Rights (Valuation allowance) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]        
Beginning balance $ 3,189,000 $ 161,000 $ 222,000 $ 0
Valuation allowance increase 1,069,000 (33,000) 4,036,000 128,000
Ending balance $ 4,258,000 $ 128,000 $ 4,258,000 $ 128,000