VARIABLE INTEREST ENTITIES LOANS HELD FOR INVESTMENT (Commercial Real Estate Loans Held for Investment) (Details) RSO (RSO [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	10.00%
Allowance for loan loss	$ 13,807,000	$ 17,691,000
Loans held for sale, net	21,916,000	48,894,000
Number of loans held for sale		2
Whole Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	745,789,000
Allowance for loan loss	9,683,000	6,920,000
Fixed contractual interest in floating rate whole loan	12.00%	15.00%
Loans held for sale, net		34,000,000
Number of loans held for sale		2
Whole Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity	52	37
Amortized Cost	745,789,000	567,938,000
Loans held for investment, unfunded loan commitments	13,700,000	8,900,000
The amortized cost of loans held for investments, fixed rate whole loans included in floating rate whole loans.		2,000,000
Not included in total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan loss	10,400,000	8,000,000
Whole Loans, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
The amortized cost of loans held for investments, fixed rate whole loans included in floating rate whole loans.	11,400,000	2,000,000
Preferred equity tranche [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	799,000
Fixed preferred equity interest in floating rate whole loan		10.00%
B Notes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	16,205,000
Allowance for loan loss	174,000	206,000
B Notes, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity	1	1
Amortized Cost	16,205,000	16,327,000
Stated interest rate	8.68%	8.68%
Mezzanine Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized Cost	64,317,000
Allowance for loan loss	559,000	860,000
Mezzanine Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity	1	2
Amortized Cost	12,455,000	15,845,000
Variable rate basis	LIBOR
Basis spread on variable rate	13.53%
Maturity Dates	April 2016
Mezzanine Loans, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity	3	3
Amortized Cost	51,862,000	66,941,000
Number of loan tranches	2
Mezzanine Loans, Fixed Rate, Tranche One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	0.50%
Mezzanine Loans, Fixed Rate, Tranche Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Variable rate basis		LIBOR
Basis spread on variable rate	18.50%	18.50%
Stated interest rate	0.50%
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity	57	43
Amortized Cost	826,311,000	667,051,000
Allowance for loan loss	$ 3,400,000	$ 9,700,000
Minimum [Member] | Whole Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Variable rate basis	LIBOR	LIBOR
Basis spread on variable rate	2.68%	2.50%
Maturity Dates	March 2014	June 2013
Minimum [Member] | Mezzanine Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Variable rate basis		LIBOR
Basis spread on variable rate		2.50%
Maturity Dates		August 2013
Minimum [Member] | Mezzanine Loans, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	0.50%	0.50%
Maturity Dates	September 2014	September 2014
Maximum [Member] | Whole Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Variable rate basis	LIBOR	LIBOR
Basis spread on variable rate	12.14%	5.50%
Maturity Dates	February 2019	February 2019
Maximum [Member] | B Notes, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maturity Dates	April 2016	April 2016
Maximum [Member] | Mezzanine Loans, Floating Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Variable rate basis		LIBOR
Basis spread on variable rate		7.45%
Maturity Dates		December 2013
Maximum [Member] | Mezzanine Loans, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Stated interest rate	18.72%	20.00%
Maturity Dates	September 2019	September 2019