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, fee and dividend income
Interest and fees on loans	$ 74,172	$ 65,286	$ 144,615	$ 129,313
Securities available for sale	7,003	7,218	13,929	14,227
Securities held to maturity	2,811	2,736	5,436	5,517
Other	781	654	1,547	1,273
Total interest, fee and dividend income	84,767	75,894	165,527	150,330
Interest expense
Deposits	5,079	3,536	9,010	7,010
Short-term borrowings	2,455	1,366	4,421	2,505
Long-term debt	452	599	928	1,205
Junior subordinated debt	1,040	772	1,941	1,498
Total interest expense	9,026	6,273	16,300	12,218
Net interest income	75,741	69,621	149,227	138,112
Provision for loan losses	8,778	7,567	16,274	14,946
Net interest income after provision for loan losses	66,963	62,054	132,953	123,166
Noninterest income
Insurance and other financial services revenue	5,826	5,621	12,330	12,391
Service charges on deposit accounts	4,246	4,161	8,218	8,138
ATM and debit card fees	5,816	5,518	11,089	10,468
Retirement plan administration fees	7,296	5,437	12,635	9,609
Trust	5,265	5,161	10,143	9,693
Bank owned life insurance	1,217	1,218	2,564	2,629
Net securities gains	91	2	163	2
Other	4,401	3,186	8,293	6,124
Total noninterest income	34,158	30,304	65,435	59,054
Noninterest expense
Salaries and employee benefits	37,726	33,503	74,293	67,736
Occupancy	5,535	5,184	11,654	11,354
Data processing and communications	4,508	4,229	8,787	8,427
Professional fees and outside services	3,336	3,609	6,828	6,641
Equipment	4,151	3,793	8,189	7,491
Office supplies and postage	1,504	1,640	3,077	3,248
FDIC expenses	1,092	1,136	2,293	2,314
Advertising	700	656	1,037	1,046
Amortization of intangible assets	1,096	1,039	2,010	2,006
Loan collection and other real estate owned, net	908	664	2,245	1,943
Other	4,332	4,868	8,747	9,397
Total noninterest expense	64,888	60,321	129,160	121,603
Income before income tax expense	36,233	32,037	69,228	60,617
Income tax expense	8,112	10,678	15,121	18,979
Net income	$ 28,121	$ 21,359	$ 54,107	$ 41,638
Earnings per share
Basic (in dollars per share)	$ 0.64	$ 0.49	$ 1.24	$ 0.96
Diluted (in dollars per share)	$ 0.64	$ 0.49	$ 1.23	$ 0.95