Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Adoption of new accounting standard	Preferred Stock	Common Stock	Common Stock Issuable	Capital Surplus	Retained Earnings	Retained Earnings Adoption of new accounting standard	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2019				79,013,729
Beginning balance at Dec. 31, 2019	$ 1,635,692	$ (3,529)	$ 0	$ 79,014	$ 11,491	$ 1,496,641	$ 40,152	$ (3,529)	$ 8,394
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	164,089						164,089
Other comprehensive income (loss)	29,316								29,316
Issuance of preferred stock	96,422		96,422
Common stock issued for acquisitions (in shares)				8,130,633
Common stock issued for acquisitions	$ 163,589			$ 8,131		155,458
Purchases of common stock (in shares)	(826,482)			(826,482)
Purchases of common stock	$ (20,782)			$ (827)		(19,955)
Preferred stock dividends	(3,533)						(3,533)
Common stock dividends	(60,310)						(60,310)
Impact of equity-based compensation awards (in shares)				202,437
Impact of equity-based compensation awards	6,086			$ 202	1,120	4,764
Impact of other equity plans (in shares)				154,962
Impact of other equity plans	490			$ 155	(1,756)	2,091
Ending balance at Dec. 31, 2020	2,007,530		96,422	$ 86,675	10,855	1,638,999	136,869		37,710
Ending balance (in shares) at Dec. 31, 2020				86,675,279
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	269,801						269,801
Other comprehensive income (loss)	(64,186)								(64,186)
Common stock issued for acquisitions (in shares)				2,863,734
Common stock issued for acquisitions	$ 95,525			$ 2,864		92,661
Purchases of common stock (in shares)	(492,744)			(492,744)
Purchases of common stock	$ (15,101)			$ (493)		(14,608)
Preferred stock dividends	(6,876)						(6,876)
Common stock dividends	(69,140)						(69,140)
Impact of equity-based compensation awards (in shares)				224,706
Impact of equity-based compensation awards	3,692			$ 225	1,061	2,406
Impact of other equity plans (in shares)				78,851
Impact of other equity plans	1,000			$ 79	(628)	1,549
Ending balance at Dec. 31, 2021	2,222,245		96,422	$ 89,350	11,288	1,721,007	330,654		(26,476)
Ending balance (in shares) at Dec. 31, 2021				89,349,826
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	277,472						277,472
Other comprehensive income (loss)	(303,012)								(303,012)
Common stock issued for acquisitions (in shares)				16,571,545
Common stock issued for acquisitions	$ 596,376			$ 16,571		579,805
Purchases of common stock (in shares)	0
Preferred stock dividends	$ (6,875)						(6,875)
Common stock dividends	(92,407)						(92,407)
Impact of equity-based compensation awards (in shares)				233,489
Impact of equity-based compensation awards	6,941			$ 234	2,046	4,661
Impact of other equity plans (in shares)				67,898
Impact of other equity plans	(66)			$ 68	(1,027)	893
Ending balance at Dec. 31, 2022	$ 2,700,674		$ 96,422	$ 106,223	$ 12,307	$ 2,306,366	$ 508,844		$ (329,488)
Ending balance (in shares) at Dec. 31, 2022				106,222,758