Loans and Allowance for Loan Losses - Primary Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Primary segments of the loan portfolio:
Individually evaluated for impairment	$ 12,919			$ 6,646
Collectively evaluated for impairment	981,914			756,280
Total Loans	994,833	$ 994,833	$ 798,297	762,926
Commercial
Primary segments of the loan portfolio:
Individually evaluated for impairment	12,036			5,764
Collectively evaluated for impairment	687,623			543,327
Total Loans	699,659	699,659	560,752	549,091
Residential
Primary segments of the loan portfolio:
Individually evaluated for impairment	849			837
Collectively evaluated for impairment	210,997			151,331
Total Loans	211,846	211,846	174,507	152,168
Home Equity
Primary segments of the loan portfolio:
Individually evaluated for impairment	28			29
Collectively evaluated for impairment	65,617			43,576
Total Loans	65,645	65,645	45,935	43,605
Consumer
Primary segments of the loan portfolio:
Individually evaluated for impairment	6			16
Collectively evaluated for impairment	17,677			18,046
Total Loans	$ 17,683	$ 17,683	$ 17,103	$ 18,062