VARIABLE INTEREST ENTITIES LOANS HELD FOR INVESTMENT (Commercial Real Estate Loans Held for Investment) (Details) RSO (RSO [Member], USD $)																			3 Months Ended		3 Months Ended			3 Months Ended					3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Whole Loans [Member]	Dec. 31, 2013 Whole Loans [Member]	Mar. 31, 2014 Whole Loans, Floating Rate [Member] Loan	Dec. 31, 2013 Whole Loans, Floating Rate [Member] Loan	Mar. 31, 2014 Not included in total [Member]	Dec. 31, 2013 Not included in total [Member]	Mar. 31, 2014 Whole Loans, Fixed Rate, Loan One [Member] [Member]	Mar. 31, 2014 Whole Loans, Fixed Rate, Loan Two [Member] [Member]	Mar. 31, 2014 Preferred equity tranche [Member]	Dec. 31, 2013 Preferred equity tranche [Member]	Mar. 31, 2014 B Notes [Member]	Dec. 31, 2013 B Notes [Member]	Mar. 31, 2014 B Notes, Fixed Rate [Member] Loan	Dec. 31, 2013 B Notes, Fixed Rate [Member] Loan	Mar. 31, 2014 Mezzanine Loans [Member]	Dec. 31, 2013 Mezzanine Loans [Member]	Mar. 31, 2014 Mezzanine Loans, Floating Rate [Member] Loan	Dec. 31, 2013 Mezzanine Loans, Floating Rate [Member] Loan	Mar. 31, 2014 Mezzanine Loans, Fixed Rate [Member] Tranche Loan	Dec. 31, 2013 Mezzanine Loans, Fixed Rate [Member] Loan	Mar. 31, 2014 Mezzanine Loans, Fixed Rate, Tranche One [Member]	Mar. 31, 2013 Mezzanine Loans, Fixed Rate, Tranche Two [Member]	Mar. 31, 2014 Mezzanine Loans, Fixed Rate, Tranche Two [Member]	Dec. 31, 2013 Mezzanine Loans, Fixed Rate, Tranche Two [Member]	Mar. 31, 2014 Commercial Real Estate Loans [Member] Loan	Dec. 31, 2013 Commercial Real Estate Loans [Member] Loan	Mar. 31, 2014 Minimum [Member] Whole Loans, Floating Rate [Member]	Dec. 31, 2013 Minimum [Member] Whole Loans, Floating Rate [Member]	Dec. 31, 2013 Minimum [Member] Mezzanine Loans, Floating Rate [Member]	Mar. 31, 2014 Minimum [Member] Mezzanine Loans, Fixed Rate [Member]	Dec. 31, 2013 Minimum [Member] Mezzanine Loans, Fixed Rate [Member]	Mar. 31, 2014 Maximum [Member] Whole Loans, Floating Rate [Member]	Dec. 31, 2013 Maximum [Member] Whole Loans, Floating Rate [Member]	Mar. 31, 2014 Maximum [Member] B Notes, Fixed Rate [Member]	Dec. 31, 2013 Maximum [Member] B Notes, Fixed Rate [Member]	Dec. 31, 2013 Maximum [Member] Mezzanine Loans, Floating Rate [Member]	Mar. 31, 2014 Maximum [Member] Mezzanine Loans, Fixed Rate [Member]	Dec. 31, 2013 Maximum [Member] Mezzanine Loans, Fixed Rate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantity					55	51									1	1			1	1	3	3					60	56
Amortized Cost			$ 833,853,000	$ 745,789,000	$ 833,853,000	$ 745,789,000					$ 799,000		$ 16,168,000	$ 16,205,000	$ 16,168,000	$ 16,205,000	$ 64,299,000	$ 64,317,000	$ 12,467,000	$ 12,455,000	$ 51,832,000	$ 51,862,000					$ 914,320,000	$ 826,311,000
Variable rate basis																			LIBOR					LIBOR					LIBOR	LIBOR	LIBOR			LIBOR	LIBOR			LIBOR
Basis spread on variable rate																			15.32%						18.50%	18.50%			2.13%	2.68%	15.32%			12.14%	12.14%			15.32%
Stated interest rate	10.00%														8.68%	8.68%							0.50%		0.50%							0.50%	0.50%						18.71%	18.72%
Maturity Dates																			April 2016										April 2014	March 2014		September 2014	September 2014	February 2019	February 2019	April 2016	April 2016	April 2016	September 2021	September 2019
Loans held for investment, unfunded loan commitments					23,100,000	13,700,000
Allowance for loan loss	6,585,000	13,807,000	5,188,000	9,683,000			5,800,000	10,400,000					132,000	174,000			524,000	559,000									741,000	3,400,000
The amortized cost of loans held for investments, fixed rate whole loans included in floating rate whole loans.						$ 2,000,000			$ 783,000	$ 12,600,000
Fixed contractual interest in floating rate whole loan				15.00%					15.00%	12.00%
Fixed preferred equity interest in floating rate whole loan												10.00%
Number of loan tranches																					2