Earnings Per Share - Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Diluted Earnings Per share
Net Income	$ 2,456	$ 1,408	$ 5,878	$ 4,769
Less: Preferred stock dividends and accretion	(87)	(202)	(262)	(400)
Net income available to common shareholders	$ 2,369	$ 1,206	$ 5,616	$ 4,369
Weighted average shares outstanding (in shares)	9,602,473	9,547,816	9,588,321	9,513,387
Effect of dilutive stock options (in shares)	32,866	9,793	24,881	21,039
Weighted average shares of common stock and common stock equivalents (in shares)	9,635,339	9,557,609	9,613,202	9,534,426
Diluted earnings per share (in dollars per share)	$ 0.25	$ 0.13	$ 0.58	$ 0.46
Anti-dilutive options and warrants (in shares)			364,209	436,929