CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
Common stock, shares outstanding at Dec. 31, 2021		17,331,000
Shareholders' equity at Dec. 31, 2021	$ 564,808	$ 1,085	$ 126,511	$ 458,310	$ (19,981)	$ (1,117)
Net income	16,483			16,483
Total other comprehensive income (loss), net of tax	(59,470)				(59,470)
Cash dividends declared	(9,498)			(9,498)
Share-based compensation	888		888
Exercise of stock options and issuance of other compensation-related equity awards, net of awards surrendered, shares		1,000
Exercise of stock options and issuance of other compensation-related equity awards, net of awards surrendered, value	(19)	$ 0	(44)			25
Common stock, shares outstanding at Mar. 31, 2022		17,332,000
Shareholders' equity at Mar. 31, 2022	$ 513,192	$ 1,085	127,355	465,295	(79,451)	(1,092)
Common stock, shares outstanding at Dec. 31, 2022	17,182,753	17,183,000
Shareholders' equity at Dec. 31, 2022	$ 453,669	$ 1,085	127,056	492,043	(157,800)	(8,715)
Net income	12,812			12,812
Total other comprehensive income (loss), net of tax	16,040				16,040
Cash dividends declared	(9,624)			(9,624)
Share-based compensation	858		858
Exercise of stock options and issuance of other compensation-related equity awards, net of awards surrendered, shares		3,000
Exercise of stock options and issuance of other compensation-related equity awards, net of awards surrendered, value	(31)	$ 0	(180)			149
Treasury stock repurchased		(200,000)
Treasury stock purchased under Stock Repurchase Program, amount acquired	$ (8,741)					(8,741)
Common stock, shares outstanding at Mar. 31, 2023	16,985,872	16,986,000
Shareholders' equity at Mar. 31, 2023	$ 464,983	$ 1,085	$ 127,734	$ 495,231	$ (141,760)	$ (17,307)