Loans Receivable (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013 Offices	Mar. 31, 2012 Offices	Dec. 31, 2012
Loans Receivable (Textual) [Abstract]
Number of offices of company	23	23
Allowance for loan losses	$ 6,721,000		$ 6,709,000
Borrowers sustained repayment period	6 months
Non-performing loans, including non-accrual loans and TDRs	7,348,000		7,393,000
Troubled debt restructuring (TDRs)	460,000	368,000
Maturity period of impaired loans	90 days
Maturity period of Larger commercial loans	60 days
Description of Loans	Loans are considered nonaccrual upon reaching 90 days delinquency
Historical loss calculation period	3 years
TDR with modified terms	$ 8,300,000		$ 8,200,000