Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest Income:
Interest and fees on loans and leases	$ 1,946,558	$ 762,713	$ 789,719
Taxable interest and dividends on securities	287,659	159,001	189,683
Non-taxable interest on securities	50,442	20,884	21,878
Loans held for sale	78	246	769
Interest income	2,284,737	942,844	1,002,049
Interest Expense:
Deposits	138,552	20,131	67,897
Securities sold under agreements to repurchase and other borrowings	19,059	3,040	5,941
Federal Home Loan Bank advances	58,557	1,708	18,767
Long-term debt	34,283	16,876	18,051
Interest expense	250,451	41,755	110,656
Net interest income	2,034,286	901,089	891,393
Provision (benefit) for credit losses	280,619	(54,500)	137,750
Net interest income (loss) after provision for loan and lease losses	1,753,667	955,589	753,643
Non-interest Income:
Deposit service fees	198,472	162,710	156,032
Loan and lease related fees	102,987	36,658	29,127
Wealth and investment services	40,277	39,586	32,916
Mortgage banking activities	705	6,219	18,295
Increase in cash surrender value of life insurance policies	29,237	14,429	14,561
Net loss (gain) on sale of investment securities	(6,751)	0	8
Other income	75,856	63,770	34,338
Total non-interest income	440,783	323,372	285,277
Non-interest Expense:
Compensation and benefits	723,620	419,989	428,391
Occupancy	113,899	55,346	71,029
Technology and equipment	186,384	112,831	112,273
Intangible assets amortization	31,940	4,513	4,160
Marketing	16,438	12,051	14,125
Professional and outside services	117,530	47,235	32,424
Deposit insurance	26,574	15,794	18,316
Other expense	180,088	77,341	78,228
Total non-interest expense	1,396,473	745,100	758,946
Income before income tax expense	797,977	533,861	279,974
Income tax expense	153,694	124,997	59,353
Net income	644,283	408,864	220,621
Preferred stock dividends	(15,919)	(7,875)	(7,875)
Net income available to common shareholders, basic	628,364	400,989	212,746
Net income available to common shareholders, diluted	$ 628,364	$ 400,989	$ 212,746
Earnings per common share:
Earnings per common share, Basic (in dollars per share)	$ 3.72	$ 4.43	$ 2.35
Earnings per common share, Diluted (in dollars per share)	$ 3.72	$ 4.42	$ 2.35