Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST INCOME
Interest and fees on loans and leases	$ 227,738	$ 205,996
Interest and dividends on investment securities:
Taxable	15,699	13,931
Exempt from federal income tax	2,128	2,242
Dividends	468	388
Interest on temporary investments and interest bearing deposits	1,164	1,557
Total interest income	247,197	224,114
INTEREST EXPENSE
Interest on deposits	15,610	9,648
Interest on securities sold under agreement to repurchase and federal funds purchased	63	30
Interest on term debt	3,361	3,510
Interest on junior subordinated debentures	4,932	4,201
Total interest expense	23,966	17,389
Net interest income	223,231	206,725
PROVISION FOR LOAN AND LEASE LOSSES	13,656	11,672
Net interest income after provision for loan and lease losses	209,575	195,053
NON-INTEREST INCOME
Service charges on deposits	14,995	14,729
Brokerage revenue	4,194	4,122
Residential mortgage banking revenue, net	38,438	26,834
Loss on sale of investment securities, net	0	(2)
Gain on loan sales, net	1,230	1,754
Loss on junior subordinated debentures carried at fair value	0	(1,555)
BOLI income	2,070	2,069
Other income	17,640	12,274
Total non-interest income	78,567	60,225
NON-INTEREST EXPENSE
Salaries and employee benefits	106,551	106,473
Occupancy and equipment, net	38,661	38,673
Communications	4,433	5,104
Marketing	1,800	1,733
Services	15,061	11,305
FDIC assessments	4,480	4,087
(Gain) loss on other real estate owned, net	(38)	82
Intangible amortization	1,541	1,689
Merger related expenses	0	1,020
Other expenses	13,624	12,548
Total non-interest expense	186,113	182,714
Income before provision for income taxes	102,029	72,564
Provision for income taxes	24,360	26,561
Net income	77,669	46,003
Dividends and undistributed earnings allocated to participating securities	6	12
Net earnings available to common shareholders	$ 77,663	$ 45,991
Earnings per common share:
Basic (in usd per share)	$ 0.35	$ 0.21
Diluted (in usd per share)	$ 0.35	$ 0.21
Weighted average number of common shares outstanding:
Basic (in shares)	220,370	220,287
Diluted (in shares)	220,825	220,779