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, 2019	$ 25,901	$ 20,959	$ 62,975	$ (79)	$ 109,756
Beginning Balance (in shares) at Dec. 31, 2019	5,180,105
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	3,744	0	3,744
Other comprehensive income (loss), net of tax	0	0	0	3,431	3,431
Employee Stock Purchase Plan share issuance	$ 13	33	0	0	46
Employee Stock Purchase Plan share issuance (in shares)	2,593
Restricted stock vested	$ 42	(42)	0	0	0
Restricted stock vested (in shares)	8,519
Stock-based compensation expense	$ 0	143	0	0	143
Cash dividends	0	0	(1,251)	0	(1,251)
Ending Balance at Jun. 30, 2020	$ 25,956	21,093	65,468	3,352	115,869
Ending Balance (in shares) at Jun. 30, 2020	5,191,217
Beginning Balance at Mar. 31, 2020	$ 25,941	21,026	63,601	(524)	110,044
Beginning Balance (in shares) at Mar. 31, 2020	5,188,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	2,494	0	2,494
Other comprehensive income (loss), net of tax	0	0	0	3,876	3,876
Employee Stock Purchase Plan share issuance	$ 9	16	0	0	25
Employee Stock Purchase Plan share issuance (in shares)	1,735
Restricted stock vested	$ 6	(6)	0	0	0
Restricted stock vested (in shares)	1,261
Stock-based compensation expense	$ 0	57	0	0	57
Cash dividends	0	0	(627)	0	(627)
Ending Balance at Jun. 30, 2020	$ 25,956	21,093	65,468	3,352	115,869
Ending Balance (in shares) at Jun. 30, 2020	5,191,217
Beginning Balance at Dec. 31, 2020	$ 25,972	21,245	65,859	4,069	$ 117,145
Beginning Balance (in shares) at Dec. 31, 2020	5,194,443				5,224,019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	4,854	0	$ 4,854
Other comprehensive income (loss), net of tax	0	0	0	(998)	(998)
Employee Stock Purchase Plan share issuance	$ 13	40	0	0	53
Employee Stock Purchase Plan share issuance (in shares)	2,568
Restricted stock vested	$ 43	(43)	0	0	0
Restricted stock vested (in shares)	8,521
Stock-based compensation expense	$ 0	130	0	0	130
Cash dividends	0	0	(1,256)	0	(1,256)
Ending Balance at Jun. 30, 2021	$ 26,028	21,372	69,457	3,071	$ 119,928
Ending Balance (in shares) at Jun. 30, 2021	5,205,532				5,244,635
Beginning Balance at Mar. 31, 2021	$ 25,979	21,324	68,245	2,375	$ 117,923
Beginning Balance (in shares) at Mar. 31, 2021	5,195,719
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	1,842	0	1,842
Other comprehensive income (loss), net of tax	0	0	0	696	696
Employee Stock Purchase Plan share issuance	$ 6	22	0	0	28
Employee Stock Purchase Plan share issuance (in shares)	1,292
Restricted stock vested	$ 43	(43)	0	0	0
Restricted stock vested (in shares)	8,521
Stock-based compensation expense	$ 0	69	0	0	69
Cash dividends	0	0	(630)	0	(630)
Ending Balance at Jun. 30, 2021	$ 26,028	$ 21,372	$ 69,457	$ 3,071	$ 119,928
Ending Balance (in shares) at Jun. 30, 2021	5,205,532				5,244,635