Previously Consolidated Variable Interest Entities (Details 8) (Previously Consolidated Variable Interest Entities, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Impaired Loans
Principal Balance	$ 530,649
Provision for Loan Loss	349,518
Weighted averge loss severity	66.00%
Mezzanine and Other Loans
Principal Balance	248,483
Provision for Loan Loss	227,944
Loss Severity	92.00%
Subordinated interests in mortgages
Principal Balance	106,470
Provision for Loan Loss	84,774
Loss Severity	80.00%
Senior Mortgage Loans
Principal Balance	57,934
Provision for Loan Loss	29,369
Loss Severity	51.00%
Unallocated Loans
Principal Balance	117,762	[1]
Provision for Loan Loss	$ 7,431	[1]
Loss Severity	6.00%	[1]

[1] We have recorded a general provision for loan losses against certain pools of smaller loans in our consolidated securitization vehicles. This general provision is not specifically allocable to any loan asset type, collateral property type, or geographic location, but to overall pool of loans. See Note 2 for additional details.