VARIABLE INTEREST ENTITIES BORROWINGS (Schedule of Debt - Parenthetical) (Details) RSO (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014 Linked Transactions [Member]	Dec. 31, 2013 Linked Transactions [Member]	Mar. 31, 2014 RSO [Member]	Dec. 31, 2013 RSO [Member]	Mar. 31, 2014 RSO [Member] CRE Repurchase Facilities [Member]	Dec. 31, 2013 RSO [Member] CRE Repurchase Facilities [Member]	Mar. 31, 2014 RSO [Member] RREF CDO 2006-1 Senior Notes [Member]	Dec. 31, 2013 RSO [Member] RREF CDO 2006-1 Senior Notes [Member]	Mar. 31, 2014 RSO [Member] RREF CDO 2007-1 Senior Notes [Member]	Dec. 31, 2013 RSO [Member] RREF CDO 2007-1 Senior Notes [Member]	Mar. 31, 2014 RSO [Member] Apidos CDO I Senior Notes [Member]	Dec. 31, 2013 RSO [Member] Apidos CDO I Senior Notes [Member]	Mar. 31, 2014 RSO [Member] Apidos CDO III Senior Notes [Member]	Dec. 31, 2013 RSO [Member] Apidos CDO III Senior Notes [Member]	Mar. 31, 2014 RSO [Member] Apidos Cinco CDO Senior Notes [Member]	Dec. 31, 2013 RSO [Member] Apidos Cinco CDO Senior Notes [Member]	Mar. 31, 2014 RSO [Member] CMBS - Term Repurchase Facilities [Member]	Dec. 31, 2013 RSO [Member] CMBS - Term Repurchase Facilities [Member]	Aug. 01, 2011 RSO [Member] Mortgages [Member]	Mar. 31, 2014 RSO [Member] Whitney CLO I, Ltd. [Member]	May 31, 2013 RSO [Member] Whitney CLO I, Ltd. [Member]	Oct. 31, 2012 RSO [Member] Whitney CLO I, Ltd. [Member]
Debt Instrument [Line Items]
Investments in unconsolidated entities			$ 62,053	$ 69,069
Principal outstanding	71,666	64,094	1,516,551	1,336,026			100,313	94,209	148,375	178,556	73,815	87,131	112,551	133,326	320,500	322,000	36,819	47,613	13,600
Unamortized debt issuance costs			14,462	16,216			129	205	509	719	0	0	40	117	703	853	0	12
Accrued interest expense			3,848	1,693	98	26											18	22
Purchased equity interests																					$ 550	$ 20,900
Ownership interests in variable interest entity																				68.30%		66.60%