Investment Securities (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Investment Securities (Textual) [Abstract]
Total fair value of investments securities, less than historical cost	$ 2,618,000		$ 2,618,000		$ 4,199,000
Total fair value of investments securities, less than historical cost, percentage of portfolio	5.90%		5.90%		9.60%
Investment securities pledged to secure a repurchase	9,303,000		9,303,000		9,369,000
Sale of available-for-sales securities	0
Gross gain resulting from sales of available-for-sale securities		206,000	89,000	706,000
Gross loss resulting from sales of available-for-sale securities				15,000
Net tax expense resulting from sales of available-for-sale securities		$ 70,000	$ 30,000	$ 240,000