Loans Receivable, net (Details 6) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Troubled debt restructurings
Loan loss reserves	$ 3,654,000	$ 3,413,000	$ 2,272,000	$ 1,812,000
Commercial Mortgage Loans [Member]
Troubled debt restructurings
Troubled debt restructurings requiring reserves, Recorded Investment	9,393,000	10,049,000
Troubled debt restructurings without reserves, Recorded Investment	2,093,000	2,123,000
Total Troubled Debt Restructurings, Recorded Investment	11,486,000	12,172,000
Troubled debt restructurings requiring reserves, Unpaid Principal Balance	10,035,000	10,531,000
Troubled debt restructurings without reserves, Unpaid Principal Balance	2,141,000	2,172,000
Total troubled debt restructurings, Unpaid Principal Balance	12,176,000	12,703,000
Number of loans	8	8
Loan loss reserves	1,488,000	1,382,000
SBA 7(a) Loans [Member]
Troubled debt restructurings
Troubled debt restructurings requiring reserves, Recorded Investment	212,000	854,000
Troubled debt restructurings without reserves, Recorded Investment
Total Troubled Debt Restructurings, Recorded Investment	212,000	854,000
Troubled debt restructurings requiring reserves, Unpaid Principal Balance	237,000	846,000
Troubled debt restructurings without reserves, Unpaid Principal Balance
Total troubled debt restructurings, Unpaid Principal Balance	237,000	846,000
Number of loans	1	1
Loan loss reserves	$ 131,000	$ 130,000