Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest, fee, and dividend income
Interest and fees on loans	$ 64,027	$ 61,230
Securities available for sale	7,009	5,987
Securities held to maturity	2,781	2,288
Other	619	449
Total interest, fee, and dividend income	74,436	69,954
Interest expense
Deposits	3,474	3,597
Short-term borrowings	1,139	328
Long-term debt	606	833
Junior subordinated debt	726	619
Total interest expense	5,945	5,377
Net interest income	68,491	64,577
Provision for loan losses	7,379	6,098
Net interest income after provision for loan losses	61,112	58,479
Noninterest income
Insurance and other financial services revenue	6,770	6,946
Service charges on deposit accounts	3,977	3,939
ATM and debit card fees	4,950	4,583
Retirement plan administration fees	4,172	3,754
Trust	4,532	4,376
Bank owned life insurance	1,411	1,291
Net securities gains	0	29
Other	2,938	3,449
Total noninterest income	28,750	28,367
Noninterest expense
Salaries and employee benefits	33,587	32,441
Occupancy	6,170	5,491
Data processing and communications	4,198	4,050
Professional fees and outside services	3,032	3,231
Equipment	3,698	3,460
Office supplies and postage	1,608	1,547
FDIC expenses	1,178	1,258
Advertising	390	504
Amortization of intangible assets	967	1,096
Loan collection and other real estate owned	1,279	705
Other	5,175	4,441
Total noninterest expense	61,282	58,224
Income before income tax expense	28,580	28,622
Income tax expense	8,301	9,731
Net income	$ 20,279	$ 18,891
Earnings per share
Basic (in dollars per share)	$ 0.47	$ 0.44
Diluted (in dollars per share)	$ 0.46	$ 0.43