Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning Balance at Dec. 31, 2018	$ 25,853	$ 20,698	$ 57,611	$ (2,156)	$ 102,006
Beginning Balance (in shares) at Dec. 31, 2018	5,170,600
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	7,860	0	7,860
Other comprehensive income, 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	5,389	0	$ 5,389
Other comprehensive income, net of tax	0	0	0	4,148	4,148
Employee Stock Purchase Plan share issuance	$ 29	67	0	0	96
Employee Stock Purchase Plan share issuance (in shares)	5,819
Restricted stock vested	$ 42	(42)	0	0	0
Restricted stock vested (in shares)	8,519
Stock-based compensation expense	$ 0	261	0	0	261
Cash dividends	0	0	(2,505)	0	(2,505)
Ending Balance at Dec. 31, 2020	$ 25,972	$ 21,245	$ 65,859	$ 4,069	$ 117,145
Ending Balance (in shares) at Dec. 31, 2020	5,194,443				5,224,019