Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]	Total
Balance at Dec. 31, 2021	$ 89,215	$ 227,085	$ 386,750	$ (4,848)	$ 698,202
Balance (in shares) at Dec. 31, 2021	17,843,081
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			39,999		39,999
Other comprehensive income (loss)				(93,081)	(93,081)
Cash dividends declared			(14,265)		(14,265)
Issuance of common stock	$ 193	306			499
Issuance of common stock (in shares)	38,566
Issuance of restricted stock	$ 202	(202)			0
Issuance of restricted stock (in shares)	40,438
Vesting of restricted stock	$ (135)	135			0
Vesting of restricted stock (in shares)	(26,904)
Stock-based compensation		696			696
Balance at Jun. 30, 2022	$ 89,475	228,020	412,484	(97,929)	632,050
Balance (in shares) at Jun. 30, 2022	17,895,181
Balance at Mar. 31, 2022	$ 89,420	227,589	399,347	(62,985)	653,371
Balance (in shares) at Mar. 31, 2022	17,884,106
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			20,271		20,271
Other comprehensive income (loss)				(34,944)	(34,944)
Cash dividends declared			(7,134)		(7,134)
Issuance of common stock	$ 30	221			251
Issuance of common stock (in shares)	6,075
Issuance of restricted stock	$ 25	(25)			0
Issuance of restricted stock (in shares)	5,000
Stock-based compensation		235			235
Balance at Jun. 30, 2022	$ 89,475	228,020	412,484	(97,929)	632,050
Balance (in shares) at Jun. 30, 2022	17,895,181
Balance at Dec. 31, 2022	$ 89,591	229,012	438,596	(129,152)	$ 628,047
Balance (in shares) at Dec. 31, 2022	17,918,280				17,918,280
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			38,717		$ 38,717
Other comprehensive income (loss)				7,838	7,838
Cash dividends declared			(15,735)		(15,735)
Issuance of common stock	$ 174	384			558
Issuance of common stock (in shares)	34,722
Issuance of restricted stock	$ 264	(264)			0
Issuance of restricted stock (in shares)	52,865
Vesting of restricted stock	$ (107)	107			0
Vesting of restricted stock (in shares)	(21,377)
Forfeiture of restricted stock	$ (4)
Forfeiture of restricted stock		4			0
Forfeiture of restricted stock (in shares)	(790)
Stock-based compensation		700			700
Balance at Jun. 30, 2023	$ 89,918	229,943	461,578	(121,314)	$ 660,125
Balance (in shares) at Jun. 30, 2023	17,983,700				17,983,700
Balance at Mar. 31, 2023	$ 89,881	229,333	450,044	(112,437)	$ 656,821
Balance (in shares) at Mar. 31, 2023	17,976,345
Increase (Decrease) in Stockholders' Equity [Roll forward]
Net income			19,404		19,404
Other comprehensive income (loss)				(8,877)	(8,877)
Cash dividends declared			(7,870)		(7,870)
Issuance of common stock	$ 43	237			280
Issuance of common stock (in shares)	8,604
Vesting of restricted stock	$ (6)	6			0
Vesting of restricted stock (in shares)	(1,249)
Stock-based compensation		367			367
Balance at Jun. 30, 2023	$ 89,918	$ 229,943	$ 461,578	$ (121,314)	$ 660,125
Balance (in shares) at Jun. 30, 2023	17,983,700				17,983,700