CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at the beginning of period (in shares) at Dec. 31, 2019		7,306,221
Balance in the beginning of period at Dec. 31, 2019	$ 251,898	$ 68,082	$ 1,269	$ 182,571	$ (24)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,145			28,145
Stock incentive plan	$ 276		276
Issuance of restricted shares of common stock through stock incentive plan, net (in shares)		5,625
Issuance of shares of common stock through exercise of stock options (in shares)	20,500	14,720
Issuance of shares of common stock through exercise of stock options	$ 8	$ 8
Issuance of shares of common stock as board compensation (in shares)		1,591
Issuance of shares of common stock as board compensation	87	$ 87
Purchase of common stock under stock repurchase program (in shares)		(2,824)
Repurchase of common stock under stock repurchase program	(122)	$ (122)
Cash dividend	(1,759)			(1,759)
Other comprehensive income (loss)	$ 6,945				6,945
Balance at the end of period (in shares) at Dec. 31, 2020	7,325,333	7,325,333
Balance at the end of period at Dec. 31, 2020	$ 285,478	$ 68,055	1,545	208,957	6,921
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	32,952			32,952
Stock incentive plan	$ 269		269
Issuance of restricted shares of common stock through stock incentive plan, net (in shares)		7,400
Issuance of shares of common stock through exercise of stock options (in shares)	0
Forfeiture of restricted shares of common stock (in shares)		(100)
Issuance of shares of common stock as board compensation (in shares)		1,075
Issuance of shares of common stock as board compensation	$ 56	$ 56
Purchase of common stock under stock repurchase program (in shares)	(153,553)	(153,553)
Repurchase of common stock under stock repurchase program	$ (7,878)	$ (7,878)
Cash dividend	(2,033)			(2,033)
Other comprehensive income (loss)	$ (10,694)				(10,694)
Balance at the end of period (in shares) at Dec. 31, 2021	7,180,155	7,180,155
Balance at the end of period at Dec. 31, 2021	$ 298,150	$ 60,233	$ 1,814	$ 239,876	$ (3,773)