Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income
Loans	$ 98,656	$ 80,133	$ 192,774	$ 154,540
Securities
Taxable	5,700	4,627	9,694	8,979
Tax-exempt	1,649	2,310	3,334	4,884
Other	569	509	1,152	1,065
Total interest income	106,574	87,579	206,954	169,468
Interest expense
Deposits	10,919	5,314	18,978	10,463
Borrowings	3,266	2,662	6,347	5,387
Total interest expense	14,185	7,976	25,325	15,850
Net interest income	92,389	79,603	181,629	153,618
Provision for loan losses	1,810	1,750	3,560	3,250
Net interest income after provision for loan losses	90,579	77,853	178,069	150,368
Noninterest income
Service charges on deposit accounts	8,271	7,958	16,744	15,889
Fees and commissions	5,917	5,470	11,602	10,669
Insurance commissions	2,110	2,181	4,115	4,041
Wealth management revenue	3,446	3,037	6,708	5,921
Mortgage banking income	12,839	12,424	23,799	22,928
BOLI income	1,195	985	2,140	2,098
Other	1,803	2,210	4,426	4,740
Total noninterest income	35,581	34,265	69,534	66,286
Noninterest expense
Salaries and employee benefits	52,010	45,014	100,794	87,223
Data processing	4,600	3,835	8,844	8,069
Net occupancy and equipment	9,805	8,814	19,627	18,133
Other real estate owned	232	781	889	1,313
Professional fees	2,176	1,882	4,314	3,949
Advertising and public relations	2,647	2,430	4,850	4,022
Intangible amortization	1,594	1,493	3,245	3,056
Communications	1,877	1,908	3,846	3,771
Extinguishment of debt	0	0	0	205
Merger and conversion related expenses	500	3,044	1,400	3,389
Other	3,585	5,640	9,161	11,020
Total noninterest expense	79,026	74,841	156,970	144,150
Income before income taxes	47,134	37,277	90,633	72,504
Income taxes	10,424	11,993	20,097	23,248
Net income (loss)	$ 36,710	$ 25,284	$ 70,536	$ 49,256
Basic earnings per share (usd per share)	$ 0.74	$ 0.57	$ 1.43	$ 1.11
Diluted earnings per share (usd per share)	0.74	0.57	1.42	1.11
Cash dividends per common share (usd per share)	$ 0.2	$ 0.18	$ 0.39	$ 0.36