Consolidated Statements of Income - 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
Loans	$ 109,748	$ 78,641	$ 318,187	$ 228,340
Taxable securities	14,654	8,718	39,285	29,172
Tax-exempt securities	3,069	2,718	9,196	8,125
Deposits in banks	104	226	600	268
Total interest income	127,575	90,303	367,268	265,905
Interest Expense
Deposits	3,193	1,083	8,274	2,778
Federal Home Loan Bank advances	966	163	2,351	979
Subordinated debentures	468	0	1,404	0
Other borrowings	152	128	288	383
Total interest expense	4,779	1,374	12,317	4,140
Net Interest Income	122,796	88,929	354,951	261,765
Provision (recapture) for loan and lease losses	3,153	(648)	12,980	5,304
Net interest income after provision (recapture) for loan and lease losses	119,643	89,577	341,971	256,461
Noninterest Income
Deposit account and treasury management fees	9,266	7,685	26,689	22,368
Card revenue	3,714	6,735	16,143	18,660
Financial services and trust revenue	2,975	2,645	8,924	8,520
Loan revenue	3,282	3,154	9,522	9,736
Merchant processing revenue	0	0	0	4,283
Bank owned life insurance	1,402	1,290	4,540	4,003
Gain (Loss) on Investments	(62)	0	(73)	0
Change in FDIC loss-sharing asset	0	0	0	(447)
Gain on sale of merchant card services portfolio	0	14,000	0	14,000
Other	442	1,558	2,109	4,938
Total noninterest income	21,019	37,067	67,854	86,061
Noninterest Expense
Compensation and employee benefits	49,419	39,983	148,938	119,201
Occupancy	8,321	8,085	27,718	22,853
Merchant processing expense	0	0	0	2,196
Advertising and promotion	1,472	969	4,523	2,923
Data processing	4,466	4,122	14,957	13,071
Legal and professional fees	4,695	2,880	12,103	9,196
Taxes, licenses and fees	1,562	1,505	4,547	3,494
Regulatory premiums	904	782	2,778	2,299
Net cost (benefit) of operation of other real estate owned	485	271	1,244	422
Amortization of intangibles	3,070	1,188	9,346	3,786
Other	8,447	7,752	27,317	25,949
Total noninterest expense	82,841	67,537	253,471	205,390
Income before income taxes	57,821	59,107	156,354	137,132
Income tax provision	11,406	18,338	28,220	40,032
Net Income	$ 46,415	$ 40,769	$ 128,134	$ 97,100
Earnings per common share
Basic ($ per share)	$ 0.63	$ 0.70	$ 1.75	$ 1.67
Diluted ($ per share)	0.63	0.70	1.75	1.67
Dividends declared per common share	$ 0.26	$ 0.22	$ 0.74	$ 0.66
Weighted average number of common shares outstanding	72,427	57,566	72,370	57,459
Weighted average number of diluted common shares outstanding	72,432	57,571	72,374	57,465