Previously Consolidated Variable Interest Entities (Details 7) (Previously Consolidated Variable Interest Entities, USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Performing loans
Gross Book Value	$ 237,622
Provision for Loan Loss	(211,331)
Net Book Value	26,291
Number of Loans	4
Non-performing loans
Gross Book Value	175,034
Provision for Loan Loss	(130,756)
Net Book Value	44,278
Number of Loans	5
Impaired Loans
Gross Book Value	412,656
Provision for Loan Loss	(342,087)
Net Book Value	$ 70,569
Number of Loans	9