Preferred Stock (Details) (USD $)	0 Months Ended		3 Months Ended	9 Months Ended				0 Months Ended			9 Months Ended
	Jun. 11, 2013	Dec. 19, 2008	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 19, 2008 Common Stock	May 15, 2013 Preferred Stock	May 09, 2012 Preferred Stock	Dec. 19, 2008 Preferred Stock	Sep. 30, 2013 Preferred Stock
Preferred Stock
Number of shares issued										30,255
Par value of share issued (in dollars per share)				$ 0.01		$ 0.01				$ 1,000
Term of warrants		10 years
Number of common shares called per warrant							287,133
Amount received for participation in U.S. Treasury Department's Capital Purchase Program										$ 30,300,000
Number of shares redeemed								18,255	12,000
Amount repaid on redemption of shares				18,255,000	12,000,000			18,300,000	12,000,000
Dividend declared and paid				456,000	975,000			228,187	140,000		456,000
Accretion of discount on preferred stock recognized			72,000	278,000	587,000			182,209	300,000		278,000
Repurchase price of warrant	$ 540,000			$ 540,000
Repurchase price of warrant (in dollars per share)	$ 1.88