Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
INTEREST INCOME
Interest and fees on loans and leases	$ 246,410	$ 226,068	$ 718,021	$ 645,780
Interest and dividends on investment securities:
Taxable	24,435	13,979	48,633	43,130
Exempt from federal income tax	2,048	2,125	6,233	6,604
Dividends	549	357	1,450	1,105
Interest on temporary investments and interest bearing deposits	2,800	934	6,044	2,815
Total interest income	276,242	243,463	780,381	699,434
INTEREST EXPENSE
Interest on deposits	25,692	12,052	62,561	32,341
Interest on securities sold under agreement to repurchase and federal funds purchased	103	81	321	432
Interest on term debt	3,439	3,491	10,278	10,663
Interest on junior subordinated debentures	5,640	4,628	15,972	13,266
Total interest expense	34,874	20,252	89,132	56,702
Net interest income	241,368	223,211	691,249	642,732
PROVISION FOR LOAN AND LEASE LOSSES	11,711	11,997	38,686	34,326
Net interest income after provision for loan and lease losses	229,657	211,214	652,563	608,406
NON-INTEREST INCOME
Residential mortgage banking revenue, net	31,484	33,430	103,085	94,158
(Loss) gain on sale of investment securities, net	0	(6)	14	27
Unrealized holding losses on equity securities	(462)	0	(1,894)	0
Gain on loan sales, net	2,772	9,260	5,350	14,324
Loss on junior subordinated debentures carried at fair value	0	(1,590)	0	(4,717)
BOLI income	2,051	2,041	6,181	6,199
Total non-interest income	72,388	76,693	222,606	208,037
NON-INTEREST EXPENSE
Salaries and employee benefits	103,575	108,732	323,466	323,766
Occupancy and equipment, net	36,530	37,648	112,775	113,276
Communications	4,165	4,549	13,045	14,512
Marketing	3,969	1,950	8,857	6,057
Services	14,794	9,578	46,482	32,269
FDIC assessments	4,303	4,405	13,475	12,939
Gain on other real estate owned, net	(128)	(99)	(258)	(474)
Intangible amortization	1,541	1,689	4,624	5,067
Merger related expenses	0	6,664	0	9,324
Other expenses	10,543	13,238	38,511	38,353
Total non-interest expense	179,292	188,354	560,977	555,089
Income before provision for income taxes	122,753	99,553	314,192	261,354
Provision for income taxes	31,772	35,746	78,240	94,292
Net income	90,981	63,807	235,952	167,062
Dividends and undistributed earnings allocated to participating securities	5	14	15	40
Net earnings available to common shareholders	$ 90,976	$ 63,793	$ 235,937	$ 167,022
Earnings per common share:
Basic (in usd per share)	$ 0.41	$ 0.29	$ 1.07	$ 0.76
Diluted (in usd per share)	$ 0.41	$ 0.29	$ 1.07	$ 0.76
Weighted average number of common shares outstanding:
Basic (in shares)	220,224	220,215	220,292	220,270
Diluted (in shares)	220,620	220,755	220,751	220,793
Total service charges on deposits
NON-INTEREST INCOME
Revenue from contract with customer	$ 15,574	$ 15,849	$ 46,089	$ 46,056
Brokerage revenue
NON-INTEREST INCOME
Revenue from contract with customer	3,947	3,832	12,302	11,857
Other income
NON-INTEREST INCOME
Revenue from contract with customer	$ 17,022	$ 13,877	$ 51,479	$ 40,133