Significant New Authoritative Accounting Guidance Significant New Authoritative Accounting Guidance (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2020
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Operating Leases, Rent Expense, Net	$ 121,000	$ 305,000	$ 284,000
ASU 2016-13 Adjustment to Allowance for Loan Credit Losses and Unfunded Commitments				$ 8,890,000
Retained Earnings Adjustment Due to Adoption of ASU 2016-13				7,020,000
Deferred Tax Adjustment Due to Adoption of ASU 2016-13				$ 1,870,000