CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
INTEREST INCOME
Interest and fees on loans and leases	$ 564,343	$ 583,874	$ 1,116,905	$ 1,158,918
Interest and dividends on investment securities:
Taxable	80,316	78,828	149,004	153,845
Exempt from federal income tax	6,769	6,904	13,576	13,808
Dividends	3,444	2,895	6,236	6,602
Interest on temporary investments and interest-bearing deposits	15,817	23,035	32,211	46,588
Total interest income	670,689	695,536	1,317,932	1,379,761
INTEREST EXPENSE
Interest on deposits	180,154	207,307	356,788	405,742
Interest on securities sold under agreement to repurchase and federal funds purchased	955	1,515	1,929	2,781
Interest on borrowings	34,542	49,418	70,616	100,693
Interest on junior and other subordinated debentures	8,592	9,847	17,158	19,734
Total interest expense	224,243	268,087	446,491	528,950
Net interest income	446,446	427,449	871,441	850,811
PROVISION FOR CREDIT LOSSES	29,449	31,820	56,852	48,956
Net interest income after provision for credit losses	416,997	395,629	814,589	801,855
NON-INTEREST INCOME
Residential mortgage banking revenue, net	7,343	5,848	16,677	10,482
Gain (loss) on sale of debt securities, net	1	(1)	5	11
Gain (loss) on equity securities, net	410	325	2,112	(1,240)
Gain (loss) on loan and lease sales, net	172	(1,516)	269	(1,295)
Gain (loss) on certain loans held for investment, at fair value	212	(10,114)	7,228	(12,486)
Bank-owned life insurance income	5,184	4,705	10,067	9,344
Other income	11,070	6,876	17,352	17,953
Total non-interest income	64,462	44,703	130,839	95,060
NON-INTEREST EXPENSE
Salaries and employee benefits	154,883	145,066	300,122	299,604
Occupancy and equipment, net	47,178	45,147	95,348	90,438
Communications	3,350	3,408	6,776	7,190
Marketing	2,805	2,305	6,202	4,241
Services	13,296	14,600	29,374	28,022
FDIC assessments	8,144	9,664	16,166	24,124
Intangible amortization	25,826	29,230	53,805	61,321
Merger and restructuring expense	8,186	14,641	22,565	19,119
Legal settlement	0	0	55,000	0
Other expenses	14,327	15,183	32,759	32,701
Total non-interest expense	277,995	279,244	618,117	566,760
Income before provision for income taxes	203,464	161,088	327,311	330,155
Provision for income taxes	51,041	40,944	88,279	85,931
Net income	$ 152,423	$ 120,144	$ 239,032	$ 244,224
Earnings per common share:
Basic (in dollars per share)	$ 0.73	$ 0.58	$ 1.14	$ 1.17
Diluted (in dollars per share)	$ 0.73	$ 0.57	$ 1.14	$ 1.17
Weighted average number of common shares outstanding:
Basic (in shares)	209,125	208,498	208,964	208,379
Diluted (in shares)	209,975	209,011	209,965	208,999
Service charges on deposits
NON-INTEREST INCOME
Revenue from contract with customer	$ 19,669	$ 18,503	$ 38,970	$ 34,567
Card-based Fees
NON-INTEREST INCOME
Revenue from contract with customer	14,559	14,681	27,130	27,864
Financial services and trust revenue
NON-INTEREST INCOME
Revenue from contract with customer	$ 5,842	$ 5,396	$ 11,029	$ 9,860