Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total assets	$ 3,107,617	$ 2,780,578	$ 3,107,617	$ 2,780,578	$ 2,879,451
Interest income	25,994	25,513	51,603	50,251
Interest expense	2,451	2,133	4,662	3,567
Net interest income	23,543	23,380	46,941	46,684
Provision for loan and lease losses	830	1,141	1,156	2,215
Noninterest income	14,119	13,351	28,075	26,782
Intangible expenses	996	893	1,766	1,679
Other noninterest expense	28,550	25,939	54,719	52,564
Intersegment (revenue) expense	0	0	0	0
Income before income taxes	7,286	8,758	17,375	17,008
Income taxes	2,046	2,292	4,846	4,426
Net income	5,240	6,466	12,529	12,582
Capital expenditures	2,016	1,334	4,194	2,651
Banking [Member]
Segment Reporting Information [Line Items]
Total assets	2,925,285	2,701,275	2,925,285	2,701,275	2,797,746
Interest income	25,986	25,505	51,586	50,235
Interest expense	2,163	2,133	4,374	3,567
Net interest income	23,823	23,372	47,212	46,668
Provision for loan and lease losses	830	1,141	1,156	2,215
Noninterest income	5,610	4,858	10,283	9,308
Intangible expenses	66	73	133	147
Other noninterest expense	19,733	20,499	38,475	41,721
Intersegment (revenue) expense	(479)	(495)	(990)	(1,029)
Income before income taxes	9,283	7,012	18,721	12,922
Income taxes	2,291	1,814	4,648	2,976
Net income	6,992	5,198	14,073	9,946
Capital expenditures	1,481	1,321	3,320	2,518
Wealth Management [Member]
Segment Reporting Information [Line Items]
Total assets	31,392	31,605	31,392	31,605	33,950
Interest income	1	0	3	0
Interest expense	0	0	0	0
Net interest income	1	0	3	0
Provision for loan and lease losses	0	0	0	0
Noninterest income	4,812	4,964	9,384	9,588
Intangible expenses	304	85	607	479
Other noninterest expense	3,247	3,059	6,305	6,014
Intersegment (revenue) expense	211	195	430	417
Income before income taxes	1,051	1,625	2,045	2,678
Income taxes	395	623	778	1,037
Net income	656	1,002	1,267	1,641
Capital expenditures	9	0	24	8
Insurance [Member]
Segment Reporting Information [Line Items]
Total assets	25,309	25,389	25,309	25,389	24,436
Interest income	0	0	0	0
Interest expense	0	0	0	0
Net interest income	0	0	0	0
Provision for loan and lease losses	0	0	0	0
Noninterest income	3,620	3,538	8,340	7,793
Intangible expenses	626	735	1,026	1,053
Other noninterest expense	2,937	2,683	6,056	5,352
Intersegment (revenue) expense	268	300	560	612
Income before income taxes	(211)	(180)	698	776
Income taxes	(81)	(72)	296	326
Net income	(130)	(108)	402	450
Capital expenditures	11	8	21	47
Other Segments [Member]
Segment Reporting Information [Line Items]
Total assets	125,631	22,309	125,631	22,309	$ 23,319
Interest income	7	8	14	16
Interest expense	288	0	288	0
Net interest income	(281)	8	(274)	16
Provision for loan and lease losses	0	0	0	0
Noninterest income	77	(9)	68	93
Intangible expenses	0	0	0	0
Other noninterest expense	2,633	(302)	3,883	(523)
Intersegment (revenue) expense	0	0	0	0
Income before income taxes	(2,837)	301	(4,089)	632
Income taxes	(559)	(73)	(876)	87
Net income	(2,278)	374	(3,213)	545
Capital expenditures	$ 515	$ 5	$ 829	$ 78