Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income	$ 1,983	$ 1,826	$ 1,566	$ 1,250	$ 1,439	$ 1,419	$ 1,300	$ 961	$ 6,625	$ 5,120	$ 3,862
Less: Preferred stock dividends	217	253	253	193	191	191	191	197	915	771	840
Discount accretion											360
Add: Redemption of preferred stock								20		20	96
Net income available to common shareholders	$ 1,766	$ 1,573	$ 1,313	$ 1,057	$ 1,248	$ 1,228	$ 1,109	$ 784	$ 5,710	$ 4,369	$ 2,758
Denominator:
Weighted-average common shares outstanding - basic	5,586,620	4,829,514	4,825,588	4,672,270	4,316,890	4,271,652	4,269,097	4,262,330	4,980,595	4,279,992	4,229,928
Common stock equivalents									218,781	178,926	110,030
Weighted-average common shares outstanding - diluted	5,835,002	5,046,487	5,029,724	4,877,448	4,551,182	4,490,026	4,423,141	4,371,324	5,199,376	4,458,918	4,339,958
Earnings per common share:
Basic	$ 0.32	$ 0.33	$ 0.28	$ 0.23	$ 0.29	$ 0.29	$ 0.26	$ 0.18	$ 1.15	$ 1.02	$ 0.65
Diluted	$ 0.30	$ 0.31	$ 0.26	$ 0.22	$ 0.27	$ 0.27	$ 0.25	$ 0.18	$ 1.10	$ 0.98	$ 0.64