Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of net unrealized gains on equity securities | ASU 2016-01 [Member]	$ 0	$ 0	$ 77	$ (77)	$ 0
Beginning Balance at Dec. 31, 2017	$ 25,087	17,270	54,738	(707)	96,388
Beginning Balance (in shares) at Dec. 31, 2017	5,017,458
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	4,919	0	4,919
Other comprehensive income (loss) net of tax	0	0	0	(1,233)	(1,233)
Issuance of common stock related to acquisition	$ 748	3,199	0	0	3,947
Issuance of common stock related to acquisition (in shares)	149,625
Reclassification of the stranded income tax effects of the Tax Cuts and Jobs Act from AOCI | ASU 2018-02 [Member]	$ 0	0	139	(139)	0
Employee Stock Purchase Plan share issuance	$ 18	69	0	0	87
Employee Stock Purchase Plan share issuance (in shares)	3,517
Stock-based compensation expense	$ 0	160	0	0	160
Cash dividends	0	0	(2,262)	0	(2,262)
Ending Balance at Dec. 31, 2018	$ 25,853	20,698	57,611	(2,156)	$ 102,006
Ending Balance (in shares) at Dec. 31, 2018	5,170,600				5,184,289
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	7,860	0	$ 7,860
Other comprehensive income (loss) net of tax	0	0	0	2,077	2,077
Employee Stock Purchase Plan share issuance	$ 19	66	0	0	85
Employee Stock Purchase Plan share issuance (in shares)	3,666
Restricted stock vested	$ 29	(29)	0	0	0
Restricted stock vested (in shares)	5,839
Stock-based compensation expense	$ 0	224	0	0	224
Cash dividends	0	0	(2,496)	0	(2,496)
Ending Balance at Dec. 31, 2019	$ 25,901	$ 20,959	$ 62,975	$ (79)	$ 109,756
Ending Balance (in shares) at Dec. 31, 2019	5,180,105				5,200,038