Condensed Financial Statements - 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
Interest expense	$ 4,566	$ 4,734	$ 4,859	$ 4,760	$ 4,217	$ 3,724	$ 3,343	$ 3,002	$ 2,800	$ 2,672	$ 2,462	$ 2,248	$ 18,919	$ 14,286	$ 10,182
Net interest income	13,713	13,525	13,259	13,037	12,826	12,760	12,411	12,890	10,773	11,008	10,933	10,674	53,534	50,887	43,388
Income before income taxes	5,633	5,090	5,021	5,193	5,188	5,298	3,162	1,753	3,997	4,499	4,079	3,790	20,937	15,401	16,365
Federal and state income tax benefit	$ (1,558)	$ (1,397)	$ (1,394)	$ (1,316)	$ (1,371)	$ (1,441)	$ (828)	$ (533)	$ (4,456)	$ (1,717)	$ (1,536)	$ (1,448)	(5,665)	(4,173)	(9,157)
Net Income													15,272	11,228	7,208
Parent Company [Member]
Dividends from subsidiary													4,500	6,000	7,500
Interest income													65	65	64
Interest expense													2,023	1,984	1,865
Net interest income													2,542	4,081	5,699
Miscellaneous expenses													(2,408)	(2,818)	(2,968)
Income before income taxes													134	1,263	2,731
Federal and state income tax benefit													954	1,078	1,583
Equity in undistributed net income of subsidiary													14,184	8,887	2,894
Net Income													$ 15,272	$ 11,228	$ 7,208