Commitments and Contingencies (Details Textual) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Site	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Standby letters of credit [Member]	Dec. 31, 2012 Standby letters of credit [Member]
Commitments and Contingencies (Textual) [Abstract]
Loss in connection with a standby letter of credit						$ 0	$ 73,000
Expiry of standby letters of credit within one year						2,300,000
Expiry of standby letters of credit thereafter						881,000
Commitments and Contingencies (Additional Textual) [Abstract]
Number of operating lease site			3
Rent expense	97,000	110,000	202,000	226,000
Rent expense offset by rent income	4,000	44,000	8,000	51,000
Reserve for unfunded commitments, included in other liabilities	698,000		698,000		499,000
Additional provisions to reserve for unfunded commitments			200,000
Outstanding under the agreement	$ 23,600,000		$ 23,600,000
Real estate-related loans representing lease portfolio	68.00%		68.00%		65.00%
Period for deterioration in the residential development market			5 years