Loans Receivable (Details 3) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012 Number	Dec. 31, 2011
Loans receivable by internal credit rating
Number of Loans	16
Carrying Value of Loans Receivable	$ 138,001	$ 114,333
Greater than zero [Member]
Loans receivable by internal credit rating
Number of Loans	16
Carrying Value of Loans Receivable	138,001
Equal to zero [Member]
Loans receivable by internal credit rating
Number of Loans
Carrying Value of Loans Receivable
Less than zero [Member]
Loans receivable by internal credit rating
Number of Loans
Carrying Value of Loans Receivable