Allowance for Loan Losses (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Allowance for loan losses (Textual) [Abstract]
Impaired loans	$ 250,000		$ 250,000
Allowance for Loan Losses (Additional Textual) [Abstract]
Non-accrual loans, totaled	54,079,000		54,079,000		80,760,000
Percentage of non-performing loans	6.40%		6.40%		8.30%
Other loans	428,000		428,000		543,000
Additional interest income	1,405,000	963,000	2,818,000	1,764,000
Impaired loans	2,034,000		2,034,000
Number of consecutive years			5 years
Relationship with bank			5 years
Threshold Loan Amount For Annual Rating Review	1,000,000		1,000,000
Allocation of Specific Reserve Regarding Troubled Debt Restructuring	295,000		295,000		2,600,000
Commercial real estate [Member]
Allowance for loan losses (Textual) [Abstract]
Impaired loans	$ 250,000		$ 250,000