BORROWINGS (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Jul. 22, 2015	Dec. 18, 2014	Sep. 16, 2014
Details of Company's borrowings
Carrying value	$ 4,709,138,000	$ 5,501,099,000
Successor Company
Details of Company's borrowings
Total borrowings	5,418,796,000	6,237,674,000
Total borrowings, carrying value	5,396,755,000	6,162,530,000
Collateral amount	5,450,084,000	6,528,921,000
Successor Company | CLO 2005-1 secured notes
Details of Company's borrowings
Par		192,384,000
Carrying value		$ 192,260,000
Weighted Average Borrowing Rate (as a percent)		1.84%
Weighted Average Remaining Maturity (in days)		847 days
Collateral amount		$ 224,716,000
Successor Company | CLO 2005-2 secured notes
Details of Company's borrowings
Par	140,212,000	242,928,000
Carrying value	$ 143,019,000	$ 242,365,000
Weighted Average Borrowing Rate (as a percent)	2.07%	0.68%
Weighted Average Remaining Maturity (in days)	788 days	1061 days
Collateral amount	$ 239,807,000	$ 381,362,000
Successor Company | CLO 2006-1 senior secured notes
Details of Company's borrowings
Par		166,841,000
Carrying value		$ 166,710,000
Weighted Average Borrowing Rate (as a percent)		1.28%
Weighted Average Remaining Maturity (in days)		1333 days
Collateral amount		$ 400,165,000
Successor Company | CLO 2007-1 secured notes
Details of Company's borrowings
Par	1,627,249,000	1,906,409,000
Carrying value	$ 1,660,963,000	$ 1,891,228,000
Weighted Average Borrowing Rate (as a percent)	1.99%	0.80%
Weighted Average Remaining Maturity (in days)	2054 days	2327 days
Collateral amount	$ 1,915,755,000	$ 2,182,078,000
Successor Company | CLO 2007-1 subordinated notes
Details of Company's borrowings
Par	134,468,000	134,468,000
Carrying value	$ 100,762,000	$ 119,112,000
Weighted Average Borrowing Rate (as a percent)	12.80%	13.75%
Weighted Average Remaining Maturity (in days)	2054 days	2327 days
Collateral amount	$ 158,308,000	$ 153,912,000
Successor Company | CLO 2007-1 mezzanine notes
Details of Company's borrowings
Par		489,723,000
Carrying value		$ 486,575,000
Weighted Average Borrowing Rate (as a percent)		3.84%
Weighted Average Remaining Maturity (in days)		2327 days
Collateral amount		$ 560,538,000
Successor Company | CLO 2007-A subordinated notes
Details of Company's borrowings
Par	15,096,000	15,096,000
Carrying value	$ 19,522,000	$ 25,921,000
Weighted Average Borrowing Rate (as a percent)	17.54%	88.02%
Weighted Average Remaining Maturity (in days)	746 days	1019 days
Collateral amount	$ 56,511,000	$ 66,044,000
Successor Company | CLO 2011-1 senior debt
Details of Company's borrowings
Par	252,398,000	402,515,000
Carrying value	$ 252,398,000	$ 402,515,000
Weighted Average Borrowing Rate (as a percent)	1.65%	1.58%
Weighted Average Remaining Maturity (in days)	1781 days	1323 days
Collateral amount	$ 322,741,000	$ 508,625,000
Successor Company | CLO 2012-1 secured notes
Details of Company's borrowings
Par	367,500,000	367,500,000
Carrying value	$ 365,283,000	$ 364,063,000
Weighted Average Borrowing Rate (as a percent)	2.42%	2.33%
Weighted Average Remaining Maturity (in days)	3364 days	3637 days
Collateral amount	$ 368,655,000	$ 365,662,000
Successor Company | CLO 2012-1 subordinated notes
Details of Company's borrowings
Par	18,000,000	18,000,000
Carrying value	$ 12,736,000	$ 12,986,000
Weighted Average Borrowing Rate (as a percent)	15.79%	16.86%
Weighted Average Remaining Maturity (in days)	3364 days	3637 days
Collateral amount	$ 18,057,000	$ 17,910,000
Successor Company | CLO 2013-1 secured notes
Details of Company's borrowings
Par	458,500,000	458,500,000
Carrying value	$ 455,227,000	$ 441,153,000
Weighted Average Borrowing Rate (as a percent)	2.02%	1.96%
Weighted Average Remaining Maturity (in days)	3576 days	3849 days
Collateral amount	$ 480,853,000	$ 477,691,000
Successor Company | CLO 2013-2 secured notes
Details of Company's borrowings
Par	339,250,000	339,250,000
Carrying value	$ 337,240,000	$ 331,383,000
Weighted Average Borrowing Rate (as a percent)	2.49%	2.21%
Weighted Average Remaining Maturity (in days)	3768 days	4041 days
Collateral amount	$ 354,497,000	$ 357,722,000
Successor Company | CLO 9 secured notes
Details of Company's borrowings
Par	463,750,000	463,750,000			$ 463,800,000.0
Carrying value	$ 458,925,000	$ 449,349,000
Weighted Average Borrowing Rate (as a percent)	2.30%	2.28%
Weighted Average Remaining Maturity (in days)	4033 days	4306 days
Collateral amount	$ 464,768,000	$ 474,072,000
Successor Company | CLO 9 subordinated notes
Details of Company's borrowings
Par	15,000,000	15,000,000			$ 15,000,000.0
Carrying value	$ 11,157,000	$ 13,531,000
Weighted Average Borrowing Rate (as a percent)	13.75%	0.00%
Weighted Average Remaining Maturity (in days)	4033 days	4306 days
Collateral amount	$ 15,033,000	$ 15,334,000
Successor Company | CLO 10 senior notes
Details of Company's borrowings
Par	368,000,000	368,000,000		$ 368,000,000.0
Carrying value	$ 368,152,000	$ 361,948,000
Weighted Average Borrowing Rate (as a percent)	2.59%	2.50%
Weighted Average Remaining Maturity (in days)	3729 days	4002 days
Collateral amount	$ 388,438,000	$ 343,090,000
Successor Company | CLO 11 senior secured notes
Details of Company's borrowings
Par	507,750,000
Carrying value	$ 499,576,000
Weighted Average Borrowing Rate (as a percent)	2.33%
Weighted Average Remaining Maturity (in days)	4215 days
Collateral amount	$ 502,168,000
Successor Company | CLO 11 subordinated notes
Details of Company's borrowings
Par	28,250,000
Carrying value	$ 24,178,000
Weighted Average Borrowing Rate (as a percent)	0.00%
Weighted Average Remaining Maturity (in days)	4215 days
Collateral amount	$ 27,939,000
Successor Company | Collaterized loan obligation secured notes
Details of Company's borrowings
Par	4,735,423,000	5,580,364,000
Carrying value	4,709,138,000	5,501,099,000
Collateral amount	5,313,530,000	6,528,921,000
Successor Company | CLO Warehouse Facility
Details of Company's borrowings
Par	26,063,000
Carrying value	$ 26,063,000
Weighted Average Borrowing Rate (as a percent)	1.83%
Weighted Average Remaining Maturity (in days)	76 days
Collateral amount	$ 136,554,000
Successor Company | CLO 13 Warehouse Facility
Details of Company's borrowings
Maximum borrowing capacity			$ 350,000,000.0
Successor Company | 8.375% Senior notes
Details of Company's borrowings
Par	258,750,000	258,750,000
Carrying value	$ 289,968,000	$ 290,861,000
Weighted Average Borrowing Rate (as a percent)	8.38%	8.38%
Weighted Average Remaining Maturity (in days)	9543 days	9816 days
Successor Company | 7.500% Senior notes
Details of Company's borrowings
Par	$ 115,043,000	$ 115,043,000
Carrying value	$ 123,426,000	$ 123,663,000
Weighted Average Borrowing Rate (as a percent)	7.50%	7.50%
Weighted Average Remaining Maturity (in days)	9668 days	9941 days
Successor Company | Junior subordinated notes
Details of Company's borrowings
Par	$ 283,517,000	$ 283,517,000
Carrying value	$ 248,160,000	$ 246,907,000
Weighted Average Borrowing Rate (as a percent)	5.42%	5.39%
Weighted Average Remaining Maturity (in days)	7676 days	7949 days