Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest, fee, and dividend income
Interest and fees on loans	$ 61,230	$ 59,518
Securities available for sale	5,987	4,945
Securities held to maturity	2,288	2,283
Other	449	480
Total interest, fee, and dividend income	69,954	67,226
Interest expense
Deposits	3,597	3,573
Short-term borrowings	328	121
Long-term debt	833	826
Junior subordinated debt	619	540
Total interest expense	5,377	5,060
Net interest income	64,577	62,166
Provision for loan losses	6,098	3,642
Net interest income after provision for loan losses	58,479	58,524
Noninterest income
Insurance and other financial services revenue	6,946	6,374
Service charges on deposit accounts	3,939	4,072
ATM and debit card fees	4,583	4,248
Retirement plan administration fees	3,754	3,196
Trust	4,376	4,450
Bank owned life insurance	1,291	1,559
Net securities gains	29	14
Other	3,449	2,621
Total noninterest income	28,367	26,534
Noninterest expense
Salaries and employee benefits	32,441	30,182
Occupancy	5,491	6,066
Data processing and communications	4,050	4,103
Professional fees and outside services	3,231	3,497
Equipment	3,460	3,249
Office supplies and postage	1,547	1,619
FDIC expenses	1,258	1,198
Advertising	504	719
Amortization of intangible assets	1,096	1,284
Loan collection and other real estate owned	705	872
Other	4,441	4,913
Total noninterest expense	58,224	57,702
Income before income tax expense	28,622	27,356
Income tax expense	9,731	9,190
Net income	$ 18,891	$ 18,166
Earnings per share
Basic (in dollars per share)	$ 0.44	$ 0.41
Diluted (in dollars per share)	$ 0.43	$ 0.41