Earnings Per Share (Schedule of Earnings per Share) (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, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Basic Earnings Per Share
Net income	$ 3,338	$ 3,225	$ 3,218	$ 2,481	$ 3,661	$ 2,751	$ 2,614	$ 2,020	$ 2,686	$ 2,518	$ 2,157	$ 2,022	$ 12,262	$ 11,046	$ 9,383
Dividends and accretion on preferred stock															(1,257)
Income available to common stockholders	$ 3,338	$ 3,225	$ 3,218	$ 2,481	$ 3,661	$ 2,751	$ 2,614	$ 2,020	$ 2,339	$ 2,247	$ 1,879	$ 1,661	12,262	11,046	8,126
Diluted Earnings Per Share
Income available to common stockholders and assumed conversions													$ 12,262	$ 11,046	$ 8,126
Weighted-Average Shares number of common shares, basic													7,374,589	7,160,700	7,076,877
Weighted-Average Shares, effect of dilutive securities stock option													173,296	231,131	180,941
Weighted-Average Shares income available to common stockholders and assumed conversions, diluted													7,547,885	7,391,831	7,257,818
Earnings per share, basic	$ 0.45	$ 0.44	$ 0.44	$ 0.34	$ 0.51	$ 0.38	$ 0.37	$ 0.28	$ 0.33	$ 0.32	$ 0.27	$ 0.24	$ 1.66	$ 1.54	$ 1.15
Earnings per share, diluted	$ 0.44	$ 0.43	$ 0.43	$ 0.33	$ 0.49	$ 0.37	$ 0.36	$ 0.27	$ 0.32	$ 0.31	$ 0.26	$ 0.23	$ 1.62	$ 1.49	$ 1.12