Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Restricted Stock	Impact of adopting ASU 2016-13 (CECL) effective January 1, 2022	Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock	Common Stock Restricted Stock	Common Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Additional Paid-in-Capital	Additional Paid-in-Capital Restricted Stock	Additional Paid-in-Capital Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings	Retained Earnings Impact of adopting ASU 2016-13 (CECL) effective January 1, 2022	Retained Earnings Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive (Loss)	Accumulated Other Comprehensive (Loss) Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock	Treasury Stock Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock Held by the Employee Stock Ownership Plan	Common Stock Held by the Employee Stock Ownership Plan Cumulative Effect, Period of Adoption, Adjusted Balance	Stock Held by Rabbi Trust	Stock Held by Rabbi Trust Cumulative Effect, Period of Adoption, Adjusted Balance	Deferred Compensation Obligations	Deferred Compensation Obligations Cumulative Effect, Period of Adoption, Adjusted Balance
Balance at beginning of period at Dec. 31, 2020	$ 1,011,287				$ 1,220			$ 609,531			$ 673,084			$ (69,625)		$ (163,015)		$ (39,293)		$ (1,875)		$ 1,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	92,049										92,049
Other comprehensive income (loss)	23,706													23,706
Issuance of common stock	47,260				26			47,234
Treasury stock allocated to restricted stock award grants	0							(733)								733
Stock based compensation	8,880							8,880
Purchase of treasury stock shares	(107,774)															(107,774)
Exercise of stock options	(25)							(25)
Restricted stock forfeitures	0							1,234								(1,234)
Repurchase shares for taxes	(357)															(357)
Employee Stock Ownership Plan shares committed to be released	4,052							1,785										2,267
Funding of deferred compensation obligations	3																			(550)		553
Balance at end of year at Dec. 31, 2021	$ 1,079,081		$ 6,212	$ 1,085,293	1,246		$ 1,246	667,906		$ 667,906	765,133	$ 6,212	$ 771,345	(45,919)	$ (45,919)	(271,647)	$ (271,647)	(37,026)	$ (37,026)	(2,425)	$ (2,425)	1,813	$ 1,813
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13
Net income	$ 86,173										86,173
Other comprehensive income (loss)	(133,377)													(133,377)
Issuance of common stock	102,250	$ 0			61	$ 2		102,189	$ (2)
Stock based compensation	7,440							7,440
Purchase of treasury stock shares	(93,996)															(93,996)
Exercise of stock options	(393)							(393)
Restricted stock forfeitures	0							1,451								(1,451)
Repurchase shares for taxes	(4,614)															(4,614)
Employee Stock Ownership Plan shares committed to be released	4,850							2,574										2,276
Funding of deferred compensation obligations	(31)																			(724)		693
Balance at end of year at Dec. 31, 2022	1,053,595				1,309			781,165			857,518			(179,296)		(371,708)		(34,750)		(3,149)		2,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36,086										36,086
Other comprehensive income (loss)	20,561													20,561
Issuance of common stock		$ 10				$ 3			$ 7
Stock based compensation	7,979							7,979
Purchase of treasury stock shares	(80,497)															(80,497)
Exercise of stock options	(24)							(24)
Restricted stock forfeitures	0							500								(500)
Repurchase shares for taxes	(623)															(623)
Excise tax on net stock repurchases	(800)															(800)
Employee Stock Ownership Plan shares committed to be released	4,095							1,823										2,272
Funding of deferred compensation obligations	(47)																			194		(241)
Balance at end of year at Dec. 31, 2023	$ 1,040,335				$ 1,312			$ 791,450			$ 893,604			$ (158,735)		$ (454,128)		$ (32,478)		$ (2,955)		$ 2,265