Earnings Per Common Share - Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Basic EPS
Net income	$ 2,261	$ 2,023	$ 4,108	$ 3,629
Preferred stock dividend and accretion	0	0	0	35
Income allocated to participating securities	2	8	6	16
Net income allocated to common shareholders	$ 2,259	$ 2,015	$ 4,102	$ 3,578
Average common shares outstanding	9,660,490	9,664,972	9,659,789	9,666,626
Less: participating shares included in average common shares outstanding	10,000	38,552	14,574	45,820
Average common shares outstanding used in basic EPS	9,650,490	9,626,420	9,645,215	9,620,806
Basic net income per share (in dollars per share)	$ 0.23	$ 0.21	$ 0.43	$ 0.37
Diluted EPS:
Income used in diluted earnings per share calculation	$ 2,259	$ 2,015	$ 4,102	$ 3,578
Average common shares outstanding	9,650,490	9,626,420	9,645,215	9,620,806
Stock Options	101,335	17,472	96,345	17,008
Average common stock shares outstanding	9,751,825	9,643,892	9,741,560	9,637,814
Diluted net income per share (in dollars per share)	$ 0.23	$ 0.21	$ 0.42	$ 0.37