Parent Company Only (Schedule of Condensed Income Statement) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Gain on sale of investment securities														$ 44
Other income	$ 2,595	$ 2,634	$ 2,489	$ 2,461	$ 2,263	$ 2,278	$ 2,264	$ 2,341	$ 2,029	$ 2,248	$ 2,131	$ 2,105	$ 10,179	9,146	$ 8,513
Credit for income taxes	(584)	(611)	(591)	(540)	(525)	(559)	(539)	(506)	872	(658)	(739)	(681)	(2,326)	(2,129)	(1,206)
Net income	$ 2,714	$ 3,058	$ 3,002	$ 2,802	$ 2,847	$ 2,863	$ 2,768	$ 2,528	$ 2,327	$ 2,226	$ 2,183	$ 1,980	11,576	11,006	8,716
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Equity in undistributed earnings of subsidiary													8,839	9,273	6,685
Dividends from subsidiary													4,037	2,723	2,574
Gain on sale of investment securities														44
Other income														11	22
Total income													12,876	12,051	9,281
Operating expenses													1,598	1,269	1,094
Income before taxes													11,278	10,782	8,187
Credit for income taxes													298	224	529
Net income													$ 11,576	$ 11,006	$ 8,716