VARIABLE INTEREST ENTITIES FAIR VALUE OF FINANCIAL INSTRUMENTS (Assets Measured on Recurring Basis) (Details) RSO (RSO [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended	9 Months Ended
	Dec. 31, 2013	Sep. 30, 2014 Level 3 [Member]	Sep. 30, 2014 CMBS Including Linked Transactions [Member] Level 3 [Member]	Sep. 30, 2014 ABS [Member] Level 3 [Member]	Sep. 30, 2014 RMBS [Member] Level 3 [Member]	Sep. 30, 2014 Structured Finance [Member] Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		$ 248,999	$ 210,785	$ 26,656	$ 451	$ 11,107
Total gains or losses (realized/unrealized):
Included in earnings		2,837	142	5,118	31	(2,454)
Purchases		202,031	105,572	61,402	31,058	3,999
Sales		(121,301)	(99,151)	(20,100)	0	(2,050)
Paydowns		(48,005)	(36,768)	(10,412)	(825)	0
Included in OCI		17,516	9,009	9,091	897	(1,481)
Transfers out of Level 2		0	0	0	0	0
Transfers into level 3	94,900	0	0	0	0	0
Ending balance		$ (302,077)	$ (189,589)	$ (71,755)	$ (31,612)	$ (9,121)