Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest, fee and dividend income
Interest and fees on loans	$ 70,443	$ 64,027
Securities available for sale	6,926	7,009
Securities held to maturity	2,625	2,781
Other	766	619
Total interest, fee and dividend income	80,760	74,436
Interest expense
Deposits	3,931	3,474
Short-term borrowings	1,966	1,139
Long-term debt	476	606
Junior subordinated debt	901	726
Total interest expense	7,274	5,945
Net interest income	73,486	68,491
Provision for loan losses	7,496	7,379
Net interest income after provision for loan losses	65,990	61,112
Noninterest income
Insurance and other financial services revenue	6,504	6,770
Service charges on deposit accounts	3,972	3,977
ATM and debit card fees	5,273	4,950
Retirement plan administration fees	5,339	4,172
Trust	4,878	4,532
Bank owned life insurance	1,347	1,411
Net securities gains	72	0
Other	3,892	2,938
Total noninterest income	31,277	28,750
Noninterest expense
Salaries and employee benefits	36,567	33,587
Occupancy	6,119	6,170
Data processing and communications	4,279	4,198
Professional fees and outside services	3,492	3,032
Equipment	4,038	3,698
Office supplies and postage	1,573	1,608
FDIC expenses	1,201	1,178
Advertising	337	390
Amortization of intangible assets	914	967
Loan collection and other real estate owned, net	1,337	1,279
Other	4,415	5,175
Total noninterest expense	64,272	61,282
Income before income tax expense	32,995	28,580
Income tax expense	7,009	8,301
Net income	$ 25,986	$ 20,279
Earnings per share
Basic (in dollars per share)	$ 0.60	$ 0.47
Diluted (in dollars per share)	$ 0.59	$ 0.46