VARIABLE INTEREST ENTITIES LOANS HELD FOR INVESTMENT (Allocation of Allowance for Loan Loss for Commercial and Bank Loans) (Details) RSO (RSO [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	$ 7,385	$ 4,613
Middle-market Loans [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	2,512
Percentage of Total Allowance	34.01%
Bank Loans [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	720	570
Percentage of Total Allowance	9.75%	12.36%
Whole Loans [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	3,923	3,758
Percentage of Total Allowance	53.12%	81.47%
Mezzanine Loans [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	98	230
Percentage of Total Allowance	1.33%	4.99%
B Notes [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	22	55
Percentage of Total Allowance	0.30%	1.19%
Residential Mortgage Loans [Member]
Receivables with Imputed Interest [Line Items]
Allowance for Loan Loss	$ 110
Percentage of Total Allowance	1.49%