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 Income (Loss)	Accumulated Other Comprehensive Income (Loss) 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	105,028										105,028
Other comprehensive loss, net of tax	(14,756)													(14,756)
Cash dividends on common stock	(29,900)										(29,900)
Share-based compensation (in shares)							4,660
Share-based compensation	2,398						$ 1		2,397
Stock issued under employee benefit plans (in shares)							8,114
Stock issued under employee benefit plans	306						$ 1		305
Stock issued under dividend reinvestment and stock purchase plan (in shares)							20,220
Stock issued under dividend reinvestment and stock purchase plan	931						$ 3		928
Stock options exercised (in shares)							17,300
Stock options exercised	198						$ 2		196
Restricted shares withheld for taxes (in shares)							(267)
Restricted shares withheld for taxes	(10)								(10)
Ending balance (in shares) at Jun. 30, 2021				125			53,972,386
Ending balance at Jun. 30, 2021	1,871,800			$ 125			$ 6,747		1,009,182		795,666			60,080
Beginning balance (in shares) at Mar. 31, 2021				125			53,953,723
Beginning balance at Mar. 31, 2021	1,805,856			$ 125			$ 6,744		1,007,300		755,877			35,810
Comprehensive income (loss)
Net income	55,559										55,559
Other comprehensive loss, net of tax	24,270													24,270
Cash dividends on common stock	(15,770)										(15,770)
Share-based compensation (in shares)							375
Share-based compensation	1,208						$ 0		1,208
Stock issued under employee benefit plans (in shares)							4,185
Stock issued under employee benefit plans	162						$ 1		161
Stock issued under dividend reinvestment and stock purchase plan (in shares)							11,103
Stock issued under dividend reinvestment and stock purchase plan	488						$ 2		486
Stock options exercised (in shares)							3,000
Stock options exercised	27								27
Ending balance (in shares) at Jun. 30, 2021				125			53,972,386
Ending balance at Jun. 30, 2021	1,871,800			$ 125			$ 6,747		1,009,182		795,666			60,080
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	87,577										87,577
Other comprehensive loss, net of tax	(253,669)													(253,669)
Cash dividends on preferred stock	(469)										(469)
Cash dividends on common stock	(34,636)										(34,636)
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)							7,034
Share-based compensation	2,244						$ 1		2,243
Stock issued under employee benefit plans (in shares)							9,055
Stock issued under employee benefit plans	317						$ 1		316
Stock issued under dividend reinvestment and stock purchase plan (in shares)							24,924
Stock issued under dividend reinvestment and stock purchase plan	$ 1,008						$ 3		1,005
Stock options exercised (in shares)	20,095						20,095
Stock options exercised	$ 336						$ 3		333
Restricted shares withheld for taxes (in shares)							(615)
Restricted shares withheld for taxes	(27)								(27)
Ending balance (in shares) at Jun. 30, 2022				125		10,000	59,059,866
Ending balance at Jun. 30, 2022	1,977,641			$ 125		$ 25,000	$ 7,383		1,226,378		917,311			(198,556)
Beginning balance (in shares) at Mar. 31, 2022				125		0	53,424,823
Beginning balance at Mar. 31, 2022	1,807,633			$ 125		$ 0	$ 6,678		987,404		897,818			(84,392)
Comprehensive income (loss)
Net income	38,991										38,991
Other comprehensive loss, net of tax	(114,164)													(114,164)
Cash dividends on preferred stock	(469)										(469)
Cash dividends on common stock	(19,029)										(19,029)
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)							5,834
Share-based compensation	1,144						$ 1		1,143
Stock issued under employee benefit plans (in shares)							9,055
Stock issued under employee benefit plans	317						$ 1		316
Stock issued under dividend reinvestment and stock purchase plan (in shares)							14,285
Stock issued under dividend reinvestment and stock purchase plan	537						$ 1		536
Stock options exercised (in shares)							17,095
Stock options exercised	299						$ 3		296
Restricted shares withheld for taxes (in shares)							(188)
Restricted shares withheld for taxes	(7)								(7)
Ending balance (in shares) at Jun. 30, 2022				125		10,000	59,059,866
Ending balance at Jun. 30, 2022	$ 1,977,641			$ 125		$ 25,000	$ 7,383		$ 1,226,378		$ 917,311			$ (198,556)