Quarterly Financial Data (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Total interest income	$ 11,594	$ 10,536	$ 10,130	$ 9,187	$ 8,623	$ 7,947	$ 7,612	$ 7,033	$ 41,447	$ 31,215	$ 25,536
Total interest expense	3,026	2,697	2,558	2,413	2,248	2,274	2,239	2,167	10,694	8,928	8,088
Net Interest Income	8,568	7,839	7,572	6,774	6,375	5,673	5,373	4,866	30,753	22,287	17,448
Provision for Loan Losses	746	454	304	442	387	(112)	(73)	147	1,946	349	324
Net Interest Income After Provision for Loan Losses	7,822	7,385	7,268	6,332	5,988	5,785	5,446	4,719	28,807	21,938	17,124
Total noninterest income	2,143	2,374	2,476	3,148	2,098	1,943	1,622	1,511	10,141	7,174	9,517
Total noninterest expense	6,492	6,207	6,327	6,257	5,879	5,785	5,560	5,438	25,283	22,662	20,482
Income Before Income Taxes	3,473	3,552	3,417	3,223	2,207	1,943	1,508	792	13,665	6,450	6,159
Income Tax Provision	1,195	1,229	1,152	1,160	742	661	531	192	4,736	2,126	1,566
Net Income	$ 2,278	$ 2,323	$ 2,265	$ 2,063	$ 1,465	$ 1,282	$ 977	$ 600	$ 8,929	$ 4,324	$ 4,593
Basic (in dollars per share)	$ 0.50	$ 0.51	$ 0.50	$ 0.46	$ 0.33	$ 0.29	$ 0.22	$ 0.13	$ 1.97	$ 0.96	$ 1.51
Diluted (in dollars per share)	$ 0.50	$ 0.51	$ 0.50	$ 0.46	$ 0.32	$ 0.28	$ 0.22	$ 0.13	$ 1.96	$ 0.96	$ 1.51
Weighted-average common shares (in shares)	4,534,910	4,532,360	4,529,823	4,516,776	4,499,316	4,497,762	4,496,219	4,494,670	4,528,528	4,497,007	3,041,666
Diluted (shares)	4,580,353	4,574,455	4,550,034	4,523,246	4,514,505	4,511,291	4,504,302	4,501,705	4,554,219	4,507,995	3,050,001