CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2020	$ 15,806	$ 275,807	$ 300,804	$ 1,376	$ 593,793
Net income			17,982		17,982
Other comprehensive loss, net of tax				(1,751)	(1,751)
Common cash dividends declared			(949)		(949)
Stock-based compensation expense		841			841
Issuance of common stock under employee benefit plans	38	(298)			(260)
Balance (Accounting Standards Update 2016-13) at Mar. 31, 2021			(937)		(937)
Balance at Mar. 31, 2021	15,844	276,350	316,900	(375)	608,719
Balance at Dec. 31, 2021	15,613	273,768	386,077	1,552	677,010
Net income			23,624		23,624
Other comprehensive loss, net of tax				(27,340)	(27,340)
Repurchase and cancellation of shares of common stock as a result of share repurchase program	(77)	(1,338)	(3,000)		(4,415)
Common cash dividends declared			(939)		(939)
Stock-based compensation expense		751			751
Issuance of common stock under employee benefit plans	44	(811)			(767)
Balance at Mar. 31, 2022	$ 15,580	$ 272,370	$ 405,762	$ (25,788)	$ 667,924