CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income
Loans, including fees	$ 67,748	$ 64,424	$ 134,616	$ 127,823
Investment securities
Taxable	12,598	10,706	24,206	22,079
Tax-exempt	1,457	1,156	2,810	2,318
Total interest on investment securities	14,055	11,862	27,016	24,397
Other earning assets	(1,014)	(1,103)	(2,015)	(2,242)
Total interest income	80,789	75,183	159,617	149,978
Interest expense
Deposits	8,679	5,457	15,604	10,987
Short-term borrowings	2,051	1,053	3,483	2,223
Long-term borrowings	1,539	1,541	3,078	3,081
Total interest expense	12,269	8,051	22,165	16,291
Net interest income	68,520	67,132	137,452	133,687
Provision for loan and lease losses	467	4,037	834	5,692
Net interest income after provision for loan and lease losses	68,053	63,095	136,618	127,995
Noninterest income
Service charges on deposit accounts	4,772	4,455	9,416	8,836
Trust and wealth management fees	3,405	3,283	7,152	6,723
Bankcard income	3,501	3,130	6,636	6,012
Client derivative fees	1,489	1,799	2,592	2,894
Net gains from sales of loans	1,327	1,846	2,543	3,027
Net gains (losses) on sales of investment securities	838	(188)	1,354	(164)
Other	2,122	5,869	5,125	8,378
Total noninterest income	17,454	20,194	34,818	35,706
Noninterest expenses
Salaries and employee benefits	31,544	29,526	63,294	59,141
Net occupancy	4,302	4,491	8,817	9,448
Furniture and equipment	2,136	2,130	4,313	4,343
Data processing	3,501	2,765	6,799	5,483
Marketing	982	801	1,492	1,866
Communication	468	477	915	958
Professional services	1,469	1,299	3,227	3,112
State intangible tax	721	639	1,442	1,278
FDIC assessments	1,018	1,112	1,950	2,244
Loss (gain) - other real estate owned	162	43	186	(147)
Other	5,253	6,130	10,166	12,407
Total noninterest expenses	51,556	49,413	102,601	100,133
Income before income taxes	33,951	33,876	68,835	63,568
Income tax expense	11,215	11,308	21,685	21,186
Net income	$ 22,736	$ 22,568	$ 47,150	$ 42,382
Earnings per common share
Basic	$ 0.37	$ 0.37	$ 0.77	$ 0.69
Diluted	0.37	0.36	0.76	0.68
Cash dividends declared per share	$ 0.17	$ 0.16	$ 0.34	$ 0.32
Average common shares outstanding - basic	61,543,478	61,194,254	61,471,347	61,115,525
Average common shares outstanding - diluted	62,234,022	62,027,008	62,187,473	61,912,366