Loans Receivable (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Dec. 31, 2011
Loans Receivable [Line Items]
Loans receivable	$ 325,073,000			$ 325,073,000	$ 263,187,000
Valuation allowance of loans receivable	13,032,000			13,032,000	19,805,000
Impaired loans, with a valuation allowance at cost	12,820,000			12,820,000	29,702,000
Impaired loans, without a valuation allowance at cost	30,431,000			30,431,000	30,357,000
Impaired loans, unpaid principal balance	53,250,000			53,250,000	93,922,000
Decrease in valuation allowance	123,000	0	0	6,773,000
Loans receivable charged off	0	0	0	85,000
Loans and Leases Receivable, Impaired, Nonperforming, Nonaccrual of Interest	13,000,000			13,000,000	30,000,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans			200,000	200,000
Aggregate Amortized Cost Of Six Largest Loans	181,000,000			181,000,000
Aggregate Fair Value Of Six Largest Loans	172,000,000			172,000,000
Aggregate Cost Basis Of Loans Considered Impaired	41,000,000			41,000,000
Debt Service Coverage Ratio	3.0			3.0
Specific Valuation Allowance [Member]
Loans Receivable [Line Items]
Valuation allowance of loans receivable	10,465,000			10,465,000	19,041,000
General Valuation Allowance [Member]
Loans Receivable [Line Items]
Valuation allowance of loans receivable	$ 2,567,000			$ 2,567,000	$ 764,000