Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income:
Interest and fees on loans and leases	$ 181,130	$ 157,071	$ 523,394	$ 459,050
Taxable interest and dividends on investments	43,819	43,384	136,167	136,734
Non-taxable interest on investment securities	5,765	4,820	17,103	13,691
Loans held for sale	307	440	826	1,006
Total interest income	231,021	205,715	677,490	610,481
Interest Expense:
Deposits	16,760	12,594	44,874	37,267
Securities sold under agreements to repurchase and other borrowings	3,847	3,447	10,970	10,999
Federal Home Loan Bank advances	6,894	6,979	22,543	21,517
Long-term debt	2,616	2,498	7,748	7,444
Total interest expense	30,117	25,518	86,135	77,227
Net interest income	200,904	180,197	591,355	533,254
Provision for loan and lease losses	10,150	14,250	27,900	43,850
Net interest income after provision for loan and lease losses	190,754	165,947	563,455	489,404
Non-interest Income:
Deposit service fees	38,321	35,734	113,519	105,553
Loan and lease related fees	6,346	9,253	19,898	20,563
Wealth and investment services	7,750	7,593	22,900	21,992
Mortgage banking activities	2,421	4,322	8,038	11,335
Increase in cash surrender value of life insurance policies	3,720	3,743	10,943	11,060
Gain on sale of investment securities, net	0	0	0	414
Impairment loss on investment securities recognized in earnings	0	0	(126)	(149)
Other income	7,288	5,767	18,267	23,093
Total non-interest income	65,846	66,412	193,439	193,861
Non-interest Expense:
Compensation and benefits	89,192	83,148	264,822	244,089
Occupancy	14,744	15,004	46,957	44,915
Technology and equipment	22,580	19,753	66,646	59,067
Intangible assets amortization	1,002	1,493	3,085	4,570
Marketing	4,045	4,622	14,101	14,215
Professional and outside services	4,030	4,795	11,813	11,360
Deposit insurance	6,344	6,177	19,701	19,596
Other expense	19,886	21,105	62,901	63,508
Total non-interest expense	161,823	156,097	490,026	461,320
Income (loss) before income tax expense	94,777	76,262	266,868	221,945
Income tax expense	30,281	24,445	81,322	72,478
Net income	64,496	51,817	185,546	149,467
Preferred stock dividends and other	(2,070)	(2,183)	(6,284)	(6,540)
Earnings applicable to common shareholders	$ 62,426	$ 49,634	$ 179,262	$ 142,927
Earnings per common share:
Basic (in dollars per share)	$ 0.68	$ 0.54	$ 1.95	$ 1.57
Diluted (in dollars per share)	$ 0.67	$ 0.54	$ 1.94	$ 1.56