CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative effect of ASC 326 adoption	Adjusted balance	Cumulative Preferred Stock	Preferred Stock Cumulative Preferred Stock	Preferred Stock Cumulative Preferred Stock Adjusted balance	Preferred Stock Noncumulative Preferred Stock	Preferred Stock Noncumulative Preferred Stock Adjusted balance	Common Stock	Common Stock Adjusted balance	Paid in Capital	Paid in Capital Adjusted balance	Retained Earnings	Retained Earnings Cumulative effect of ASC 326 adoption	Retained Earnings Adjusted balance	Comprehensive Income (Loss)	Comprehensive Income (Loss) Adjusted balance
Beginning balance (in shares) at Dec. 31, 2019					125		0
Beginning balance (in shares) at Dec. 31, 2019									55,368,482
Beginning balance at Dec. 31, 2019	$ 1,786,437				$ 125		$ 0		$ 6,921		$ 1,054,997		$ 696,520			$ 27,874
Comprehensive income
Net income	148,600												148,600
Other comprehensive income (loss), net of tax	46,962															46,962
Cash dividends on common stock	(56,542)												(56,542)
Repurchases of common stock (in shares)									(1,634,437)
Repurchases of common stock	(55,912)								$ (204)		(55,708)
Share-based compensation (in shares)									128,292
Share-based compensation	4,600								$ 16		4,584
Stock issued under employee benefit plans (in shares)									25,423
Stock issued under employee benefit plans	639								$ 3		636
Stock issued under dividend reinvestment and stock purchase plan (in shares)									60,806
Stock issued under dividend reinvestment and stock purchase plan	1,726								$ 8		1,718
Stock options exercised (in shares)									13,550
Stock options exercised	115								$ 2		113
Restricted shares withheld for taxes (in shares)									(39,757)
Restricted shares withheld for taxes	(980)								$ (6)		(974)
Ending balance (in shares) at Dec. 31, 2020					125	125	0	0
Ending balance (in shares) at Dec. 31, 2020									53,922,359	53,922,359
Ending balance at Dec. 31, 2020	1,875,645	$ (68,040)	$ 1,807,605		$ 125	$ 125	$ 0	$ 0	$ 6,740	$ 6,740	1,005,366	$ 1,005,366	788,578	$ (68,040)	$ 720,538	74,836	$ 74,836
Comprehensive income
Net income	205,531												205,531
Other comprehensive income (loss), net of tax	(19,723)															(19,723)
Cash dividends on common stock	(61,230)												(61,230)
Repurchases of common stock (in shares)									(646,102)
Repurchases of common stock	(25,444)								$ (81)		(25,363)
Share-based compensation (in shares)									94,510
Share-based compensation	4,762								$ 12		4,750
Stock issued under employee benefit plans (in shares)									16,507
Stock issued under employee benefit plans	605								$ 2		603
Stock issued under dividend reinvestment and stock purchase plan (in shares)									43,861
Stock issued under dividend reinvestment and stock purchase plan	1,880								$ 5		1,875
Stock options exercised (in shares)									17,300
Stock options exercised	198								$ 2		196
Restricted shares withheld for taxes (in shares)									(38,024)
Restricted shares withheld for taxes	$ (1,613)								$ (4)		(1,609)
Ending balance (in shares) at Dec. 31, 2021				125	125		0
Ending balance (in shares) at Dec. 31, 2021	53,410,411								53,410,411
Ending balance at Dec. 31, 2021	$ 1,912,571				$ 125		$ 0		$ 6,676		985,818		864,839			55,113
Comprehensive income
Net income	222,089												222,089
Other comprehensive income (loss), net of tax	(294,264)															(294,264)
Cash dividends on preferred stock	(1,406)												(1,406)
Cash dividends on common stock	(72,748)												(72,748)
Issuance of stock related to acquisition (in shares)							10,000		5,588,962
Issuance of stock related to acquisition	262,389						$ 25,000		$ 699		236,690
Share-based compensation (in shares)									118,046
Share-based compensation	4,652								$ 15		4,637
Stock issued under employee benefit plans (in shares)									20,267
Stock issued under employee benefit plans	706								$ 3		703
Stock issued under dividend reinvestment and stock purchase plan (in shares)									50,559
Stock issued under dividend reinvestment and stock purchase plan	$ 2,056								$ 6		2,050
Stock options exercised (in shares)	22,000								22,000
Stock options exercised	$ 358								$ 3		355
Restricted shares withheld for taxes (in shares)									(39,662)
Restricted shares withheld for taxes	$ (1,633)								$ (6)		(1,627)
Ending balance (in shares) at Dec. 31, 2022				125	125		10,000
Ending balance (in shares) at Dec. 31, 2022	59,170,583								59,170,583
Ending balance at Dec. 31, 2022	$ 2,034,770				$ 125		$ 25,000		$ 7,396		$ 1,228,626		$ 1,012,774			$ (239,151)