Mortgage Servicing Rights (Valuation allowance) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Beginning balance	$ 1,242,000	$ 3,189,000	$ 4,365,000	$ 222,000
Valuation allowance increase	1,784,000	1,069,000	(1,339,000)	4,036,000
Ending balance	$ 3,026,000	$ 4,258,000	$ 3,026,000	$ 4,258,000