VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Sales of Available-for-sale Securities) (Details) RSO (RSO [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended	3 Months Ended
	Dec. 31, 2014 Security	Mar. 31, 2015 Security
CMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Positions Sold	3
Par Amount Sold	$ 12,500
Realized Gain (Loss)	(298)
ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Positions Sold		4
Par Amount Sold		9,411
Realized Gain (Loss)		$ 2,669