Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value
CT Legacy REIT
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value	100,100
Recurring Basis | CT Legacy REIT
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value	100,100
Recurring Basis | CT Legacy REIT | Quoted Prices in Active Markets (Level 1)
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value
Recurring Basis | CT Legacy REIT | Other Observable Inputs (Level 2)
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value
Recurring Basis | CT Legacy REIT | Significant Unobservable Inputs (Level 3)
Measured on a recurring basis:
Investment in CT Legacy Asset, at fair value	100,100
Recurring Basis | Securitization Vehicles
Measured on a recurring basis:
Interest rate hedge liabilities	(19,089)
Recurring Basis | Securitization Vehicles | Quoted Prices in Active Markets (Level 1)
Measured on a recurring basis:
Interest rate hedge liabilities
Recurring Basis | Securitization Vehicles | Other Observable Inputs (Level 2)
Measured on a recurring basis:
Interest rate hedge liabilities	(19,089)
Recurring Basis | Securitization Vehicles | Significant Unobservable Inputs (Level 3)
Measured on a recurring basis:
Interest rate hedge liabilities
Nonrecurring Basis | Securitization Vehicles
Impaired loans:
Subordinate interests in mortgages	4,130	[1]
Nonrecurring Basis | Securitization Vehicles | Quoted Prices in Active Markets (Level 1)
Impaired loans:
Subordinate interests in mortgages
Nonrecurring Basis | Securitization Vehicles | Other Observable Inputs (Level 2)
Impaired loans:
Subordinate interests in mortgages
Nonrecurring Basis | Securitization Vehicles | Significant Unobservable Inputs (Level 3)
Impaired loans:
Subordinate interests in mortgages	$ 4,130	[1]

[1] Loans receivable against which we have recorded a provision for loan losses as of September 30, 2012.