Credit Quality and Nonperforming Assets (Narrative) (Details) - USD ($)		3 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Credit Quality And Nonperforming Assets [Abstract]
Foreclosed assets		$ 806,000	$ 1,082,000
Gross nonperforming loans	[1]	4,568,000	5,156,000
Troubled debt restructurings, total amount		11,840,000
Troubled debt restructurings on non-accrual status		1,090,000
Purchase credit impaired loans, allowance for loan losses		100,000	$ 103,000
Certain loans acquired in transfer accounted for as debt securities, accretable yield, accretion		$ 0

[1] Included in total financing receivables