Loans Receivable (Details Textual) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Loans Receivable (Textual) [Abstract]
Troubled debt restructurings, allowance	$ 2,900,000	$ 2,900,000	$ 2,600,000
Loans classified as a Troubled Debt Restructurings	40,400,000	40,400,000	37,100,000
Nonaccrual loans	22,300,000	22,300,000	19,400,000
Accrual loans status	18,100,000	18,100,000	17,700,000
Commitment to lend additional amounts to customers with outstanding loans	0	0	0
Minimum period to reduce interest rate as a modification in term of loan		1 year
Maximum period to reduce interest rate as a modification in term of loan		7 years
Troubled debt restructurings, provision for loan losses period increase (decrease)	144,000	231,000
Troubled debt restructurings, charge-offs	100,000	100,000
Loans modified	1,200,000	1,200,000
Interest income on impaired loans		2,300,000
Extension of maturity date, minimum		2 years
Extension of maturity date, maximum		7 years
Loans past due more than 90 days and still accruing interest	$ 0	$ 0	$ 0
Payment default classification period		90 days