CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2019	$ 100,187	$ 977	$ 31,617	$ 134	$ 132,915
Balance (in shares) at Dec. 31, 2019	12,919,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			2,679		2,679
Other comprehensive income (loss), net of taxes				5,069	5,069
Stock dividend adjustment	$ 348		(348)		0
Stock dividend adjustment (in shares)	1,310
Cash in lieu of fractional shares			(8)		(8)
Cash in lieu of fractional shares (in shares)	(166)
Stock-based compensation	$ 134				134
Common shares issued related to restricted stock grants, net of reversals	$ 0				0
Common shares issued related to restricted stock grants, net of reversals (in shares)	38,224
Stock options exercised, net	$ 4				4
Stock options exercised, net (in shares)	10,067
Balance at Mar. 31, 2020	$ 100,673	977	33,940	5,203	140,793
Balance (in shares) at Mar. 31, 2020	12,968,567
Balance at Dec. 31, 2019	$ 100,187	977	31,617	134	132,915
Balance (in shares) at Dec. 31, 2019	12,919,132
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					8,809
Other comprehensive income (loss), net of taxes					6,219
Balance at Sep. 30, 2020	$ 100,970	977	40,070	6,353	148,370
Balance (in shares) at Sep. 30, 2020	12,969,267
Balance at Mar. 31, 2020	$ 100,673	977	33,940	5,203	140,793
Balance (in shares) at Mar. 31, 2020	12,968,567
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			2,705		2,705
Other comprehensive income (loss), net of taxes				1,239	1,239
Stock-based compensation	$ 149				149
Balance at Jun. 30, 2020	$ 100,822	977	36,645	6,442	144,886
Balance (in shares) at Jun. 30, 2020	12,968,567
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			3,425		3,425
Other comprehensive income (loss), net of taxes				(89)	(89)
Stock-based compensation	$ 148				148
Common shares issued related to restricted stock grants	$ 0				0
Common shares issued related to restricted stock grants (in shares)	700
Balance at Sep. 30, 2020	$ 100,970	977	40,070	6,353	148,370
Balance (in shares) at Sep. 30, 2020	12,969,267
Balance at Dec. 31, 2020	$ 107,527	977	37,115	5,038	150,657
Balance (in shares) at Dec. 31, 2020	13,634,463
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			3,178		3,178
Other comprehensive income (loss), net of taxes				(4,172)	(4,172)
Stock dividend adjustment	$ 329		(329)		0
Stock dividend adjustment (in shares)	1,282
Cash in lieu of fractional shares			(8)		(8)
Cash in lieu of fractional shares (in shares)	(168)
Stock-based compensation	$ 144				144
Common shares issued related to restricted stock grants	$ 0				0
Common shares issued related to restricted stock grants (in shares)	38,400
Stock options exercised, net	$ 0				0
Stock options exercised, net (in shares)	6,108
Balance at Mar. 31, 2021	$ 108,000	977	39,956	866	149,799
Balance (in shares) at Mar. 31, 2021	13,680,085
Balance at Dec. 31, 2020	$ 107,527	977	37,115	5,038	150,657
Balance (in shares) at Dec. 31, 2020	13,634,463
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					10,993
Other comprehensive income (loss), net of taxes					(5,159)
Balance at Sep. 30, 2021	$ 105,917	977	47,771	(121)	154,544
Balance (in shares) at Sep. 30, 2021	13,467,734
Balance at Mar. 31, 2021	$ 108,000	977	39,956	866	149,799
Balance (in shares) at Mar. 31, 2021	13,680,085
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			3,306		3,306
Other comprehensive income (loss), net of taxes				146	146
Stock-based compensation	$ 148				148
Common shares issued related to restricted stock grants	$ 0				0
Common shares issued related to restricted stock grants (in shares)	3,000
Stock repurchase and retirement	$ (925)				(925)
Stock repurchase and retirement (in shares)	(82,549)
Balance at Jun. 30, 2021	$ 107,223	977	43,262	1,012	152,474
Balance (in shares) at Jun. 30, 2021	13,600,536
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			4,509		4,509
Other comprehensive income (loss), net of taxes				(1,133)	(1,133)
Stock-based compensation	$ 148				148
Restricted stock forfeited	$ 0				0
Restricted stock forfeited (in shares)	(468)
Stock repurchase and retirement	$ (1,454)				(1,454)
Stock repurchase and retirement (in shares)	(132,334)
Balance at Sep. 30, 2021	$ 105,917	$ 977	$ 47,771	$ (121)	$ 154,544
Balance (in shares) at Sep. 30, 2021	13,467,734