Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
INTEREST INCOME
Loans	$ 150,170	$ 151,026
Securities:
Taxable interest	27,162	27,212
Tax-exempt interest	24,964	24,404
Total securities income	52,126	51,616
Federal funds and resell agreements	2,821	5,452
Interest-bearing due from banks	703	2,663
Trading securities	159	654
Total interest income	205,979	211,411
INTEREST EXPENSE
Deposits	6,798	29,732
Federal funds and repurchase agreements	1,886	6,381
Other	3,180	1,357
Total interest expense	11,864	37,470
Net interest income	194,115	173,941
Provision for credit losses	(7,500)	88,000
Net interest income after provision for credit losses	201,615	85,941
NONINTEREST INCOME
Trust and securities processing	54,834	47,000
Trading and investment banking	9,356	1,723
Service charges on deposit accounts	21,976	25,081
Insurance fees and commissions	420	259
Brokerage fees	3,334	9,860
Bankcard fees	14,673	16,545
Investment securities (losses) gains, net	(8,336)	3,520
Other	12,640	(5,564)
Total noninterest income	108,897	98,424
NONINTEREST EXPENSE
Salaries and employee benefits	127,681	111,060
Occupancy, net	11,935	12,180
Equipment	19,615	21,241
Supplies and services	3,492	4,185
Marketing and business development	2,345	4,640
Processing fees	15,417	13,390
Legal and consulting	5,755	6,110
Bankcard	4,956	4,860
Amortization of other intangible assets	1,380	1,734
Regulatory fees	2,546	2,366
Other	5,824	6,853
Total noninterest expense	200,946	188,619
Income (loss) before income taxes	109,566	(4,254)
Income tax expense (benefit)	16,923	(815)
NET INCOME (LOSS)	$ 92,643	$ (3,439)
PER SHARE DATA
Net income (loss) – basic	$ 1.93	$ (0.07)
Net income (loss) – diluted	1.91	(0.07)
Dividends	$ 0.32	$ 0.31
Weighted average shares outstanding – basic	48,096,643	48,689,876
Weighted average shares outstanding – diluted	48,520,752	48,689,876