Earnings Per Share - Diluted (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Diluted Earnings Per share
Net Income	$ 1,709	$ 1,773	$ 3,422	$ 3,361
Less: Preferred stock dividends and accretion	(87)	(99)	(175)	(198)
Net income available to common shareholders	$ 1,622	$ 1,674	$ 3,247	$ 3,163
Weighted average shares outstanding (in shares)	9,592,045	9,516,110	9,581,172	9,495,890
Effect of dilutive stock options (in shares)	26,931	24,505	22,884	26,774
Weighted average shares of common stock and common stock equivalents (in shares)	9,618,976	9,540,615	9,604,056	9,522,664
Diluted earnings per share (in dollars per share)	$ 0.17	$ 0.18	$ 0.34	$ 0.33
Anti-dilutive options and warrants (in shares)			377,129	518,116