Earnings Per Share (Schedule of Earnings per 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, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Basic Earnings Per Share
Net income	$ 3,604	$ 2,694	$ 2,557	$ 1,963	$ 2,640	$ 2,472	$ 2,112	$ 1,976	$ 2,003	$ 2,173	$ 1,644	$ 1,426	$ 10,818	$ 9,200	$ 7,246
Dividends and accretion on preferred stock														(1,257)	(1,446)
Income available to common stockholders	3,604	2,694	2,557	1,963	2,294	2,201	1,834	1,614	1,641	1,811	1,282	1,066	10,818	7,943	5,800
Diluted Earnings Per Share
Income available to common stockholders and assumed conversions													$ 10,818	$ 7,943	$ 5,800
Weighted-Average Shares number of common shares, basic													7,160,700	7,076,877	6,951,727
Weighted-Average Shares, effect of dilutive securities stock option													231,131	180,941	103,957
Weighted-Average Shares income available to common stockholders and assumed conversions, diluted													7,391,831	7,257,818	7,055,684
Earnings per share, basic	$ 0.49	$ 0.38	$ 0.36	$ 0.28	$ 0.32	$ 0.31	$ 0.26	$ 0.23	$ 0.23	$ 0.26	$ 0.18	$ 0.16	$ 1.51	$ 1.12	$ 0.83
Earnings per share, diluted	$ 0.48	$ 0.36	$ 0.35	$ 0.27	$ 0.32	$ 0.30	$ 0.25	$ 0.22	$ 0.23	$ 0.26	$ 0.18	$ 0.15	$ 1.46	$ 1.09	$ 0.82