Other Real Estate Owned ("OREO") (Narrative) (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]
Additions of underlying property	$ 3,300,000	$ 3,266,000	$ 282,000	$ 307,000
Fair value of foreclosed real estate, additions		3,800,000
Disposals of underlying property		(416,000)	(991,000)	(1,005,000)
(Gains) losses on dispositions		(188,000)	8,000
Valuation allowance		766,000	425,000	532,000
Carrying value of impaired loans	$ 227,000	227,000		0
Commercial Real Estate [Member]
Debt and Equity Securities, FV-NI [Line Items]
Additions of underlying property		143,000		142,000
Proceeds from sale of OREO				807,000
Gains (losses) on sale of OREO				4,000
(Gains) losses on dispositions		316,000	327,000
Commercial Equipment [Member]
Debt and Equity Securities, FV-NI [Line Items]
(Gains) losses on dispositions		35,000
Development Project [Member]
Debt and Equity Securities, FV-NI [Line Items]
Additions of underlying property		139,000		165,000
One Residential Property And Three Residential Lots [Member]
Debt and Equity Securities, FV-NI [Line Items]
Bank provided financing		280,000
Residential Lots [Member]
Debt and Equity Securities, FV-NI [Line Items]
Proceeds from sale of OREO				190,000
Gains (losses) on sale of OREO				$ (12,000)
(Gains) losses on dispositions		$ 65,000	188,000
Commercial Building [Member]
Debt and Equity Securities, FV-NI [Line Items]
(Gains) losses on dispositions			$ 476,000