Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest income
Interest and fees on loans	$ 423,307	$ 199,876	$ 814,626	$ 367,573
Interest and dividends on investment securities
Taxable	35,845	18,317	65,987	34,789
Tax-exempt	15,994	16,379	32,019	32,487
Other interest	6,086	2,420	11,415	4,413
Total interest income	481,231	236,991	924,048	439,261
Interest expense
Interest on deposits	162,196	8,019	271,618	11,591
Interest on federal funds purchased and securities sold under agreements to repurchase	2,261	406	5,404	444
Interest on other short-term funding	0	1	1	2
Interest on FHLB advances	49,261	9,689	99,222	17,871
Interest on long-term funding	9,596	2,730	15,876	5,460
Total interest expense	223,314	20,845	392,121	35,367
Net interest income	257,917	216,146	531,927	403,893
Provision for credit losses	22,100	(2)	40,071	(3,992)
Net interest income after provision for credit losses	235,817	216,148	491,856	407,886
Noninterest income
Capital markets, net	5,093	8,010	10,176	16,656
Mortgage banking, net	7,768	6,145	11,313	14,536
Bank and corporate owned life insurance	2,172	4,106	4,835	6,177
Asset gains (losses), net	(299)	1,677	(35)	1,865
Investment securities gains (losses), net	14	(8)	66	12
Other	2,080	1,888	4,501	4,086
Noninterest Income, Total	65,543	75,458	127,616	149,925
Noninterest expense
Personnel	114,089	112,666	230,510	217,477
Technology	24,220	21,223	47,818	42,707
Occupancy	13,587	14,151	28,650	30,231
Business development and advertising	7,106	5,655	12,955	10,610
Equipment	4,975	4,960	9,906	9,920
Legal and professional	4,831	4,873	8,688	9,960
Loan and foreclosure costs	1,635	1,476	2,773	3,490
FDIC assessment	9,550	5,400	16,425	10,500
Other intangible amortization	2,203	2,203	4,405	4,405
Other	8,476	8,815	15,955	15,412
Total noninterest expense	190,673	181,420	378,086	354,712
Income before income taxes	110,687	110,187	241,386	203,099
Income tax expense	23,533	23,363	50,873	42,013
Net income	87,154	86,824	190,514	161,086
Preferred stock dividends	2,875	2,875	5,750	5,750
Net income available to common equity	$ 84,279	$ 83,949	$ 184,764	$ 155,336
Earnings per common share
Basic	$ 0.56	$ 0.56	$ 1.23	$ 1.04
Diluted	$ 0.56	$ 0.56	$ 1.22	$ 1.03
Average common shares outstanding
Basic	149,986	149,083	149,875	148,933
Diluted	150,870	150,203	150,903	150,265
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 20,483	$ 21,332	$ 40,672	$ 43,735
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	12,372	16,506	25,366	33,363
Card-based fees
Noninterest income
Card-based fees	11,396	11,442	21,982	21,368
Other fee-based revenue
Noninterest income
Card-based fees	$ 4,465	$ 4,360	$ 8,740	$ 8,126