VARIABLE INTEREST ENTITIES INVESTMENT SECURITIES AVAILABLE-FOR-SALE (Details) RSO $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) Security	Sep. 30, 2014 USD ($) Security	Sep. 30, 2015 USD ($) Security	Sep. 30, 2014 USD ($) Security	Dec. 31, 2014 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	$ 7,792		$ 7,792		$ 7,850
Unrealized Losses	(80)		(80)		(176)
Available-for-sale securities	8,905		8,905		9,065
RSO [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	226,983		226,983		256,515
Unrealized Gains	9,432		9,432		22,761
Unrealized Losses	(1,815)		(1,815)		(3,556)
Available-for-sale securities	234,600		234,600		275,720
Investment securities available-for-sale, pledged as collateral, at fair value	118,797		118,797		197,800
RSO [Member] | CMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	175,167		175,167		168,669
Unrealized Gains	3,902		3,902		4,938
Unrealized Losses	(1,244)		(1,244)		(3,202)
Available-for-sale securities	177,825		177,825		170,405
Positions Sold | Security		0		6
Positions Redeemed | Security		0		0
Par Amount Sold/Redeemed		$ 0		$ 28,470
Realized Gain (Loss)		$ 0		$ 182
RSO [Member] | ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	47,110		47,110		55,617
Unrealized Gains	5,419		5,419		16,876
Unrealized Losses	(381)		(381)		(336)
Available-for-sale securities	$ 52,148		$ 52,148		72,157
Positions Sold | Security	8	3	15	3
Positions Redeemed | Security	0	0	3	1
Par Amount Sold/Redeemed	$ 15,462	$ 6,947	$ 31,399	$ 9,447
Realized Gain (Loss)	2,437	$ 2,974	10,547	$ 3,000
RSO [Member] | Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	2,420		2,420		2,415
Unrealized Gains	0		0		10
Unrealized Losses	(113)		(113)		(18)
Available-for-sale securities	2,307		2,307		2,407
Positions Sold | Security		0		0
Positions Redeemed | Security		1		2
Par Amount Sold/Redeemed		$ 1,000		$ 1,630
Realized Gain (Loss)		$ 48		$ 47
RSO [Member] | RMBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost or Amortized Cost	2,286		2,286		29,814
Unrealized Gains	111		111		937
Unrealized Losses	(77)		(77)		0
Available-for-sale securities	$ 2,320		$ 2,320		$ 30,751
Positions Sold | Security	0		6
Positions Redeemed | Security	0		0
Par Amount Sold/Redeemed	$ 0		$ 28,305
Realized Gain (Loss)	$ 0		$ 984