Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
INTEREST INCOME
Interest and fees on loans and leases	$ 264,110	$ 242,123	$ 522,857	$ 471,611
Interest and dividends on investment securities:
Taxable	10,287	8,499	30,243	24,198
Exempt from federal income tax	1,921	2,057	4,035	4,185
Dividends	574	433	1,091	901
Interest on temporary investments and interest bearing deposits	4,708	2,080	5,633	3,244
Total interest income	281,600	255,192	563,859	504,139
INTEREST EXPENSE
Interest on deposits	43,591	21,259	77,685	36,869
Interest on securities sold under agreement to repurchase and federal funds purchased	403	155	1,213	218
Interest on term debt	4,563	3,478	8,246	6,839
Interest on junior subordinated debentures	5,881	5,400	11,868	10,332
Total interest expense	54,438	30,292	99,012	54,258
Net interest income	227,162	224,900	464,847	449,881
PROVISION FOR LOAN AND LEASE LOSSES	19,352	13,319	33,036	26,975
Net interest income after provision for loan and lease losses	207,810	211,581	431,811	422,906
NON-INTEREST INCOME
Residential mortgage banking revenue, net	9,529	33,163	20,760	71,601
(Loss) gain on sale of debt securities, net	(7,186)	14	(7,186)	14
Gain (loss) on equity securities, net	82,607	(1,432)	83,302	(1,432)
Gain on loan and lease sales, net	3,333	1,348	4,102	2,578
BOLI income	2,093	2,060	4,261	4,130
Total non-interest income	121,823	71,651	167,563	150,218
NON-INTEREST EXPENSE
Salaries and employee benefits	104,049	113,340	204,707	219,891
Occupancy and equipment, net	36,032	37,584	72,277	76,245
Communications	3,906	4,447	8,126	8,880
Marketing	4,312	3,088	7,038	4,888
Services	13,227	16,627	25,437	31,688
FDIC assessments	2,837	4,692	5,779	9,172
Loss (gain) on other real estate owned, net	2,678	(92)	2,627	(130)
Intangible amortization	1,405	1,542	2,809	3,083
Other expenses	11,969	14,344	23,207	27,968
Total non-interest expense	180,415	195,572	352,007	381,685
Income before provision for income taxes	149,218	87,660	247,367	191,439
Provision for income taxes	37,408	21,661	61,524	46,468
Net income	$ 111,810	$ 65,999	$ 185,843	$ 144,971
Earnings per common share:
Basic (in usd per share)	$ 0.51	$ 0.30	$ 0.84	$ 0.66
Diluted (in usd per share)	$ 0.51	$ 0.30	$ 0.84	$ 0.66
Weighted average number of common shares outstanding:
Basic (in shares)	220,487	220,283	220,427	220,326
Diluted (in shares)	220,719	220,647	220,692	220,760
Total service charges on deposits
NON-INTEREST INCOME
Revenue from contract with customer	$ 15,953	$ 15,520	$ 31,231	$ 30,515
Brokerage revenue
NON-INTEREST INCOME
Revenue from contract with customer	3,980	4,161	7,790	8,355
Other income
NON-INTEREST INCOME
Revenue from contract with customer	$ 11,514	$ 16,817	$ 23,303	$ 34,457