Fair Value Measurements, Fair Value of Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Loans, impaired, outstanding balance	$ 212,000		$ 224,000
Loans, impaired, specific reserve	27,000		39,000
Real estate owned, change in fair value	0	$ 0
Impairment on Mortgage Servicing Rights	98,000		$ 77,000
Mortgage Banking Derivatives, Net [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Beginning balance	1,835,000	898,000
Mortgage derivative gain (loss), net		1,384,000
Ending balance		$ 2,282,000
Mortgage Banking Derivatives, Net [Member] | Recurring [Member]
Assets measured on recurring basis, unobservable input reconciliation [Roll Forward]
Mortgage derivative gain (loss), net	6,794,000
Ending balance	$ 8,629,000