Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest income
Interest and fees on loans	$ 456,788	$ 423,307	$ 911,260	$ 814,626
Interest and dividends on investment securities
Taxable	50,278	35,845	96,826	65,987
Tax-exempt	14,669	15,994	29,443	32,019
Other interest	8,539	6,086	16,133	11,415
Total interest income	530,274	481,231	1,053,662	924,048
Interest expense
Interest on deposits	221,062	162,196	447,293	271,618
Interest on federal funds purchased and securities sold under agreements to repurchase	2,303	2,261	5,166	5,404
Interest on other short-term funding	6,077	0	10,785	1
Interest on FHLB advances	34,143	49,261	55,814	99,222
Interest on long-term funding	10,096	9,596	20,154	15,876
Total interest expense	273,681	223,314	539,211	392,121
Net interest income	256,593	257,917	514,451	531,927
Provision for credit losses	23,008	22,100	47,009	40,071
Net interest income after provision for credit losses	233,585	235,817	467,442	491,856
Noninterest income
Capital markets, net	4,685	5,093	8,735	10,176
Mortgage banking, net	2,505	7,768	5,166	11,313
Bank and corporate owned life insurance	4,584	2,172	7,154	4,835
Asset (losses), net	(627)	(299)	(933)	(35)
Investment securities gains, net	67	14	3,947	66
Other	2,222	2,080	4,549	4,501
Noninterest Income, Total	65,159	65,543	130,144	127,616
Noninterest expense
Personnel	121,581	114,089	240,976	230,510
Technology	27,161	24,220	53,362	47,818
Occupancy	13,128	13,587	26,761	28,650
Business development and advertising	7,535	7,106	14,052	12,955
Equipment	4,450	4,975	9,049	9,906
Legal and professional	4,429	4,831	9,101	8,688
Loan and foreclosure costs	1,793	1,635	3,771	2,773
FDIC assessment	7,131	9,550	21,077	16,425
Other intangible amortization	2,203	2,203	4,405	4,405
Other	6,450	8,476	10,963	15,955
Total noninterest expense	195,861	190,673	393,518	378,086
Income before income taxes	102,884	110,687	204,068	241,386
Income tax (benefit) expense	(12,689)	23,533	7,326	50,873
Net income	115,573	87,154	196,742	190,514
Preferred stock dividends	2,875	2,875	5,750	5,750
Net income available to common equity	$ 112,698	$ 84,279	$ 190,992	$ 184,764
Earnings per common share
Basic	$ 0.75	$ 0.56	$ 1.27	$ 1.23
Diluted	$ 0.74	$ 0.56	$ 1.26	$ 1.22
Average common shares outstanding
Basic	149,872	149,986	149,864	149,875
Diluted	151,288	150,870	151,310	150,903
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 22,628	$ 20,483	$ 44,323	$ 40,672
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	12,263	12,372	24,702	25,366
Card-based fees
Noninterest income
Revenue from Contract with Customer, Including Assessed Tax, Out of Scope Topic 606	11,975	11,396	23,242	21,982
Other fee-based revenue
Noninterest income
Revenue from Contract with Customer, Including Assessed Tax, Out of Scope Topic 606	$ 4,857	$ 4,465	$ 9,259	$ 8,740