Condensed Consolidated Statements of Changes to Stockholder's Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]
Beginning balance at Dec. 31, 2019	$ 230,258	$ 81,535	$ (12,456)	$ 160,081	$ 1,098
Beginning balance, shares at Dec. 31, 2019		11,136,935
Net income	4,105			4,105
Other comprehensive income (loss)	3,735				3,735
Purchase of treasury stock	(170)		(170)
Purchase of treasury stock, shares		(7,064)
Issuance of share of restricted stock and forfeiture of share of restricted stock	(1)	$ 11	(10)	(2)
Issuance of share of restricted stock and forfeiture of share of restricted stock, shares		(450)
Stock-based compensation expense	298	$ 298
Cash dividends declared	(1,768)			(1,768)
Ending balance at Mar. 31, 2020	236,457	$ 81,844	(12,636)	162,416	4,833
Ending balance, shares at Mar. 31, 2020		11,129,421
Beginning balance at Dec. 31, 2020	249,160	$ 81,804	(11,932)	173,591	5,697
Beginning balance, shares at Dec. 31, 2020		11,197,544
Net income	4,909			4,909
Other comprehensive income (loss)	(5,554)				(5,554)
Purchase of treasury stock	(23)		(23)
Purchase of treasury stock, shares		(950)
Issuance of share of restricted stock and forfeiture of share of restricted stock		$ 1	(7)	6
Issuance of share of restricted stock and forfeiture of share of restricted stock, shares		150,000
Stock-based compensation expense	225	$ 225
Cash dividends declared	(1,889)			(1,889)
Ending balance at Mar. 31, 2021	$ 246,828	$ 82,030	$ (11,962)	$ 176,617	$ 143
Ending balance, shares at Mar. 31, 2021		11,196,744