VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Sales of Available-for-sale Securities) (Details) RSO - RSO [Member] $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($) Security	Jun. 30, 2015 USD ($) Security	Dec. 31, 2014 USD ($) Security
CMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Positions Sold | Security			3
Par Amount Sold			$ 15,970
Realized Gain (Loss)			$ 480
ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Positions Sold | Security		3
Par Amount Sold		$ 3,626
Realized Gain (Loss)		$ 1,838
RMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Positions Sold | Security	6
Par Amount Sold	$ 28,305
Realized Gain (Loss)	$ 984