Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Interest income	$ 25,513	$ 18,725	$ 50,251	$ 37,671
Interest expense	2,133	981	3,567	1,979
Net interest income	23,380	17,744	46,684	35,692
Provision for loan and lease losses	1,141	1,251	2,215	2,726
Noninterest income	13,351	11,924	26,782	24,065
Noninterest expense	26,832	21,790	54,243	42,673
Income before income taxes	8,758	6,627	17,008	14,358
Income taxes	2,292	1,547	4,426	3,552
Net income	6,466	5,080	12,582	10,806
Total assets	2,780,578	2,197,252	2,780,578	2,197,252	$ 2,235,321
Capital expenditures	1,517	1,377	5,231	1,909
Banking [Member]
Segment Reporting Information [Line Items]
Interest income	25,505	18,716	50,235	37,653
Interest expense	1,459	981	2,886	1,981
Net interest income	24,046	17,735	47,349	35,672
Provision for loan and lease losses	1,141	1,251	2,215	2,726
Noninterest income	4,858	3,972	9,308	7,617
Noninterest expense	20,115	16,028	40,762	31,564
Income before income taxes	7,648	4,428	13,680	8,999
Income taxes	1,801	721	3,003	1,479
Net income	5,847	3,707	10,677	7,520
Total assets	2,701,275	2,125,787	2,701,275	2,125,787	2,154,485
Capital expenditures	1,504	1,244	5,095	1,703
Wealth Management [Member]
Segment Reporting Information [Line Items]
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	4,964	4,994	9,588	9,984
Noninterest expense	3,301	3,677	6,987	7,067
Income before income taxes	1,663	1,317	2,601	2,917
Income taxes	636	488	1,010	1,092
Net income	1,027	829	1,591	1,825
Total assets	31,605	31,352	31,605	31,352	34,195
Capital expenditures	0	40	8	72
Insurance [Member]
Segment Reporting Information [Line Items]
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	3,538	2,557	7,793	6,029
Noninterest expense	3,718	2,434	7,017	4,996
Income before income taxes	(180)	123	776	1,033
Income taxes	(72)	55	326	436
Net income	(108)	68	450	597
Total assets	25,389	20,429	25,389	20,429	22,930
Capital expenditures	8	58	50	67
Other Segments [Member]
Segment Reporting Information [Line Items]
Interest income	8	9	16	18
Interest expense	674	0	681	(2)
Net interest income	(666)	9	(665)	20
Provision for loan and lease losses	0	0	0	0
Noninterest income	(9)	401	93	435
Noninterest expense	(302)	(349)	(523)	(954)
Income before income taxes	(373)	759	(49)	1,409
Income taxes	(73)	283	87	545
Net income	(300)	476	(136)	864
Total assets	22,309	19,684	22,309	19,684	$ 23,711
Capital expenditures	$ 5	$ 35	$ 78	$ 67