Consolidated Securitization Vehicles (Details 7) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Securitization Vehicles		Mar. 31, 2013 Securitization Vehicles CT CDO I		Mar. 31, 2013 Securitization Vehicles GSMS 2006-FL8A
Debt Obligations
Principal Balance			$ 136,944		$ 88,892		$ 48,052
Book Value, beginning year	136,944	139,184	139,184		91,131		48,053
Book Value, ending year	$ 136,944	$ 139,184	$ 136,944		$ 88,892		$ 48,052
Coupon			1.43%	[1]	1.63%	[1]	1.07%	[1]
All-In Cost			1.43%	[1]	1.63%	[1]	1.07%	[1]
Maturity Date			Oct. 31, 2032	[2]	Jul. 31, 2039	[2]	Jun. 30, 2020	[2]

[1] Represents a weighted average for each respective facility, assuming LIBOR of 0.20% at March 31, 2013 for floating rate debt obligations.

[2] Maturity dates represent the contractual maturity of each securitization trust. Repayment of securitized debt is a function of collateral cash flows which are disbursed in accordance with the contractual provisions of each trust, and is generally expected to occur prior to the maturity date above.