Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
INTEREST INCOME
Interest and fees on loans and leases	$ 588,603	$ 569,670	$ 1,747,521	$ 1,535,874
Interest and dividends on investment securities:
Taxable	76,074	80,066	229,919	198,831
Exempt from federal income tax	6,855	6,929	20,663	17,143
Dividends	2,681	4,941	9,283	8,241
Interest on temporary investments and interest-bearing deposits	24,683	34,407	71,271	87,604
Total interest income	698,896	696,013	2,078,657	1,847,693
INTEREST EXPENSE
Interest on deposits	208,027	126,974	613,769	290,995
Interest on securities sold under agreement to repurchase and federal funds purchased	1,121	1,220	3,902	2,697
Interest on borrowings	49,636	77,080	150,329	186,848
Interest on junior and other subordinated debentures	9,894	9,864	29,628	27,605
Total interest expense	268,678	215,138	797,628	508,145
Net interest income	430,218	480,875	1,281,029	1,339,548
PROVISION FOR CREDIT LOSSES	28,769	36,737	77,725	158,290
Net interest income after provision for credit losses	401,449	444,138	1,203,304	1,181,258
NON-INTEREST INCOME
Residential mortgage banking revenue, net	6,668	7,103	17,150	12,577
Gain on sale of debt securities, net	3	4	14	4
Gain (loss) on equity securities, net	2,272	(2,055)	1,032	(336)
Gain (loss) on loan and lease sales, net	161	1,871	(1,134)	3,253
Bank-owned life insurance income	4,674	4,440	14,018	11,293
Noninterest Income, Other Operating Income	14,158	(5,117)	19,625	12,297
Total non-interest income	66,159	43,981	161,219	138,394
NON-INTEREST EXPENSE
Salaries and employee benefits	147,268	159,041	446,872	458,531
Occupancy and equipment, net	45,056	43,070	135,494	135,320
Communications	3,322	4,589	10,512	11,972
Marketing	3,078	2,886	7,319	5,882
Services	15,013	14,341	43,035	41,278
FDIC assessments	9,332	11,200	33,456	28,892
Intangible amortization	29,055	29,879	90,376	78,092
Business Combination, Acquisition Related Costs	2,364	18,938	21,483	164,485
Other expenses	16,870	20,203	49,571	51,072
Total non-interest expense	271,358	304,147	838,118	975,524
Income before provision for income taxes	196,250	183,972	526,405	344,128
Provision for income taxes	50,068	48,127	135,999	88,944
Net income	$ 146,182	$ 135,845	$ 390,406	$ 255,184
Earnings per common share:
Basic (in dollars per share)	$ 0.70	$ 0.65	$ 1.87	$ 1.34
Diluted (in dollars per share)	$ 0.70	$ 0.65	$ 1.87	$ 1.33
Weighted average number of common shares outstanding:
Basic (in shares)	208,545	208,070	208,435	190,997
Diluted (in shares)	209,454	208,645	209,137	191,546
Service charges on deposits
NON-INTEREST INCOME
Revenue from contract with customer	$ 18,549	$ 17,410	$ 53,116	$ 48,176
Card-based Fees
NON-INTEREST INCOME
Revenue from contract with customer	14,591	15,674	42,455	40,670
Financial services and trust revenue
NON-INTEREST INCOME
Revenue from contract with customer	$ 5,083	$ 4,651	$ 14,943	$ 10,460