Fair Value (Details Textual) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Property	Sep. 30, 2011	Dec. 31, 2011 Property
Fair Value (Textual) [Abstract]
Impaired loans collateral dependent loans principal balance	$ 3,000,000		$ 3,000,000		$ 4,600,000
Impaired loans collateral dependent loans valuation allowance	340,000		340,000		936,000
Additional provision for loan losses	246,000	745,000	665,000	1,100,000
Troubled debt restructurings not carried at fair value	4,400,000		4,400,000		2,300,000
Other real estate owned measured at fair value less costs to sell	57,000		57,000
Real estate owned properties sold			13
Net carrying amount of other real estate owned					346,000
Number of properties charged down reflecting updated appraisals					5
Write down of other real estate owned			$ 73,000		$ 115,000
Maximum maturity period of short term borrowings			90 days