Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2019	$ 71	$ 32,359	$ 119,481	$ (25,971)	$ 125,940
Net income			1,755		1,755
Other comprehensive income/(loss)				(5,632)	(5,632)
Common stock issued		52			52
Stock based compensation		98			98
Stock repurchase	(1)	(2,753)			(2,754)
Common stock dividend declared			(910)		(910)
Balance at Mar. 31, 2020	70	29,756	120,326	(31,603)	118,549
Balance at Dec. 31, 2019	71	32,359	119,481	(25,971)	125,940
Net income					9,285
Other comprehensive income/(loss)					120
Balance at Sep. 30, 2020	70	29,975	126,043	(25,851)	130,237
Balance at Mar. 31, 2020	70	29,756	120,326	(31,603)	118,549
Net income			2,570		2,570
Other comprehensive income/(loss)				4,120	4,120
Common stock issued		47			47
Stock based compensation		71			71
Common stock dividend declared			(904)		(904)
Balance at Jun. 30, 2020	70	29,874	121,992	(27,483)	124,453
Net income			4,960		4,960
Other comprehensive income/(loss)				1,632	1,632
Common stock issued		49			49
Stock based compensation		52			52
Common stock dividend declared			(909)		(909)
Balance at Sep. 30, 2020	70	29,975	126,043	(25,851)	130,237
Balance at Dec. 31, 2020	70	30,149	129,691	(28,863)	131,047
Net income			3,430		3,430
Other comprehensive income/(loss)				(4,335)	(4,335)
Common stock issued		46			46
Stock based compensation		50			50
Common stock dividend declared			(1,049)		(1,049)
Balance at Mar. 31, 2021	70	30,245	132,072	(33,198)	129,189
Balance at Dec. 31, 2020	70	30,149	129,691	(28,863)	131,047
Net income					12,221
Other comprehensive income/(loss)					131
Balance at Sep. 30, 2021	66	23,522	138,931	(28,732)	133,787
Balance at Mar. 31, 2021	70	30,245	132,072	(33,198)	129,189
Net income			4,403		4,403
Other comprehensive income/(loss)				4,730	4,730
Common stock issued		56			56
Stock based compensation		296			296
Stock repurchase	(4)	(7,175)			(7,179)
Common stock dividend declared			(939)		(939)
Balance at Jun. 30, 2021	66	23,422	135,536	(28,468)	130,556
Net income			4,388		4,388
Other comprehensive income/(loss)				(264)	(264)
Common stock issued		57			57
Stock based compensation		43			43
Common stock dividend declared			(993)		(993)
Balance at Sep. 30, 2021	$ 66	$ 23,522	$ 138,931	$ (28,732)	$ 133,787