Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest and fees on loans and leases:
Taxable	$ 110,119	$ 86,792	$ 62,521
Exempt from federal income taxes	7,545	6,452	5,684
Total interest and fees on loans and leases	117,664	93,244	68,205
Interest and dividends on investment securities:
Taxable	5,380	4,671	3,989
Exempt from federal income taxes	2,712	3,447	3,610
Interest on deposits with other banks	61	95	81
Interest and dividends on other earning assets	790	526	307
Total interest income	126,607	101,983	76,192
Interest expense
Interest on demand deposits	1,902	1,474	545
Interest on savings deposits	1,052	533	317
Interest on time deposits	4,261	4,000	3,102
Interest on short-term borrowings	748	35	32
Interest on long-term debt and subordinated notes	4,419	2,023	0
Total interest expense	12,382	8,065	3,996
Net interest income	114,225	93,918	72,196
Provision for loan and lease losses	4,821	3,802	3,607
Net interest income after provision for loan and lease losses	109,404	90,116	68,589
Noninterest income
Trust fee income	7,741	7,908	7,835
Service charges on deposit accounts	4,691	4,230	4,230
Investment advisory commission and fee income	11,357	10,773	11,904
Insurance commission and fee income	14,603	13,885	11,543
Other service fee income	7,903	7,379	7,189
Bank owned life insurance income	2,931	1,295	1,628
Net gain on sales of investment securities	518	1,265	635
Net gain on mortgage banking activities	6,027	4,838	2,182
Other income	192	852	1,198
Total noninterest income	55,963	52,425	48,344
Noninterest expense
Salaries and benefits	61,518	50,069	42,245
Commissions	9,361	8,037	7,637
Net occupancy	9,638	8,430	7,023
Equipment	3,489	3,159	2,379
Data processing	6,981	4,660	3,791
Professional fees	4,547	3,839	3,164
Marketing and advertising	2,015	2,253	1,880
Deposit insurance premiums	1,713	1,730	1,561
Intangible expenses	5,528	2,567	2,167
Acquisition-related costs	10,257	1,047	1,270
Integration costs	5,667	1,490	8
Restructuring charges	1,731	1,642	0
Other expense	19,536	16,592	14,129
Total noninterest expense	141,981	105,515	87,254
Income before income taxes	23,386	37,026	29,679
Income taxes	3,881	9,758	7,448
Net income	$ 19,505	$ 27,268	$ 22,231
Net income per share:
Basic (in dollars per share)	$ 0.85	$ 1.39	$ 1.37
Diluted (in dollars per share)	0.84	1.39	1.37
Dividends declared	$ 0.80	$ 0.80	$ 0.80