CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative effect of ASC 326 adoption	Adjusted balance	Preferred Stock Cumulative Preferred Stock	Preferred Stock Cumulative Preferred Stock Adjusted balance	Preferred Stock Non-Cumulative Preferred Stock	Common Stock	Common Stock Adjusted balance	Additional Paid-in Capital	Additional Paid-in Capital Adjusted balance	Retained Earnings	Retained Earnings Cumulative effect of ASC 326 adoption	Retained Earnings Adjusted balance	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Adjusted balance
Beginning balance (in shares) at Dec. 31, 2020				125	125		53,922,359	53,922,359
Beginning balance at Dec. 31, 2020	$ 1,875,645	$ (68,040)	$ 1,807,605	$ 125	$ 125		$ 6,740	$ 6,740	$ 1,005,366	$ 1,005,366	$ 788,578	$ (68,040)	$ 720,538	$ 74,836	$ 74,836
Comprehensive income (loss):
Net income	157,798										157,798
Other comprehensive (loss) income, net of tax	(34,947)													(34,947)
Cash dividends on common stock	(45,608)										(45,608)
Repurchase of common stock (in shares)							(529,498)
Repurchases of common stock	(20,807)						$ (66)		(20,741)
Share-based compensation (in shares)							94,260
Share-based compensation	3,615						$ 12		3,603
Stock issued under employee benefit plans (in shares)							12,006
Stock issued under employee benefit plans	445						$ 2		443
Stock issued under dividend reinvestment and stock purchase plan (in shares)							32,322
Stock issued under dividend reinvestment and stock purchase plan	1,405						$ 4		1,401
Stock options exercised (in shares)							17,300
Stock options exercised	198						$ 2		196
Restricted shares withheld for taxes (in shares)							(38,004)
Restricted shares withheld for taxes	(1,614)						$ (5)		(1,609)
Ending balance (in shares) at Sep. 30, 2021				125			53,510,745
Ending balance at Sep. 30, 2021	1,868,090			$ 125			$ 6,689		988,659		832,728			39,889
Beginning balance (in shares) at Jun. 30, 2021				125			53,972,386
Beginning balance at Jun. 30, 2021	1,871,800			$ 125			$ 6,747		1,009,182		795,666			60,080
Comprehensive income (loss):
Net income	52,770										52,770
Other comprehensive (loss) income, net of tax	(20,191)													(20,191)
Cash dividends on common stock	(15,708)										(15,708)
Repurchase of common stock (in shares)							(529,498)
Repurchases of common stock	(20,807)						$ (66)		(20,741)
Share-based compensation (in shares)							89,600
Share-based compensation	1,217						$ 11		1,206
Stock issued under employee benefit plans (in shares)							3,892
Stock issued under employee benefit plans	139						$ 1		138
Stock issued under dividend reinvestment and stock purchase plan (in shares)							12,102
Stock issued under dividend reinvestment and stock purchase plan	474						$ 1		473
Restricted shares withheld for taxes (in shares)							(37,737)
Restricted shares withheld for taxes	(1,604)						$ (5)		(1,599)
Ending balance (in shares) at Sep. 30, 2021				125			53,510,745
Ending balance at Sep. 30, 2021	1,868,090			$ 125			$ 6,689		988,659		832,728			39,889
Beginning balance (in shares) at Dec. 31, 2021				125		0	53,410,411
Beginning balance at Dec. 31, 2021	1,912,571			$ 125		$ 0	$ 6,676		985,818		864,839			55,113
Comprehensive income (loss):
Net income	151,329										151,329
Other comprehensive (loss) income, net of tax	(369,202)													(369,202)
Cash dividends on preferred stock	(938)										(938)
Cash dividends on common stock	(53,688)										(53,688)
Issuance of common 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)							112,443
Share-based compensation	3,430						$ 14		3,416
Stock issued under employee benefit plans (in shares)							15,072
Stock issued under employee benefit plans	520						$ 2		518
Stock issued under dividend reinvestment and stock purchase plan (in shares)							37,693
Stock issued under dividend reinvestment and stock purchase plan	$ 1,536						$ 5		1,531
Stock options exercised (in shares)	20,095						20,095
Stock options exercised	$ 336						$ 3		333
Restricted shares withheld for taxes (in shares)							(39,262)
Restricted shares withheld for taxes	(1,617)						$ (6)		(1,611)
Ending balance (in shares) at Sep. 30, 2022				125		10,000	59,145,414
Ending balance at Sep. 30, 2022	1,906,666			$ 125		$ 25,000	$ 7,393		1,226,695		961,542			(314,089)
Beginning balance (in shares) at Jun. 30, 2022				125		10,000	59,059,866
Beginning balance at Jun. 30, 2022	1,977,641			$ 125		$ 25,000	$ 7,383		1,226,378		917,311			(198,556)
Comprehensive income (loss):
Net income	63,752										63,752
Other comprehensive (loss) income, net of tax	(115,533)													(115,533)
Cash dividends on preferred stock	(469)										(469)
Cash dividends on common stock	(19,052)										(19,052)
Share-based compensation (in shares)							105,409
Share-based compensation	1,186						$ 13		1,173
Stock issued under employee benefit plans (in shares)							6,017
Stock issued under employee benefit plans	203						$ 1		202
Stock issued under dividend reinvestment and stock purchase plan (in shares)							12,769
Stock issued under dividend reinvestment and stock purchase plan	528						$ 2		526
Restricted shares withheld for taxes (in shares)							(38,647)
Restricted shares withheld for taxes	(1,590)						$ (6)		(1,584)
Ending balance (in shares) at Sep. 30, 2022				125		10,000	59,145,414
Ending balance at Sep. 30, 2022	$ 1,906,666			$ 125		$ 25,000	$ 7,393		$ 1,226,695		$ 961,542			$ (314,089)