VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Schedule of Available-for-Sale Securities, Fair Value) (Details) RSO (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	$ 8,333	$ 7,850
Unrealized Losses	(224)	(176)
Fair Value	9,519	9,065
RSO [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	265,322	256,515
Unrealized Gains	19,889	22,761
Unrealized Losses	(1,141)	(3,556)
Fair Value	284,070	275,720
RSO [Member] | CMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	188,052	168,669
Unrealized Gains	6,450	4,938
Unrealized Losses	(734)	(3,202)
Fair Value	193,768	170,405
RSO [Member] | RMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	28,964	29,814
Unrealized Gains	1,192	937
Unrealized Losses	0	0
Fair Value	30,156	30,751
RSO [Member] | ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	45,889	55,617
Unrealized Gains	12,233	16,876
Unrealized Losses	(387)	(336)
Fair Value	57,735	72,157
RSO [Member] | Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	2,417	2,415
Unrealized Gains	14	10
Unrealized Losses	(20)	(18)
Fair Value	$ 2,411	$ 2,407