Loans Receivable (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 359,177,000		$ 359,177,000		$ 401,961,000
Valuation allowance of loans receivable	1,844,000		1,844,000		5,620,000
Impaired loans, with a valuation allowance	0		0		1,775,000
Impaired loans, without a valuation allowance	30,000,000		30,000,000		31,023,000
Impaired loans, unpaid principal balance	30,000,000		30,000,000		35,872,000
Decrease in valuation allowance	(30,000)	123,000	65,000	6,773,000
Loans receivable charged off	0	0	0	85,000
Aggregate cost basis of loans cosidered impaired	30,000,000		30,000,000
Number of Loans Deemed Impaired [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans			1
Commercial and Construction Real Estate and Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Valuation allowance, specific	0		0		3,000,000
Valuation allowance, general	1,844,000		1,844,000		2,620,000
Six Larget Loans Receivable [Member] | Credit Concentration Risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	247,000,000		247,000,000
Number of loans			6
Aggregate amortized cost	$ 244,000,000		$ 244,000,000