BORROWINGS (Details 2) - USD ($)						1 Months Ended			4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 16, 2015	May. 07, 2015	Dec. 18, 2014	Sep. 16, 2014	Jan. 23, 2014	Nov. 30, 2015	Jul. 31, 2015	Feb. 28, 2015	Apr. 30, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Successor Company
Details of Company's borrowings
Collateralized loan obligation secured debt repaid										$ 1,045,041,000	$ 1,672,467,000
Successor Company | Collateralized Loan Obligation Secured Notes
Details of Company's borrowings
Fair value, option, credit risk, gains (losses) on liabilities											0
Fair value, option, credit risk, unrealized gain (loss) on liabilities										27,000,000
Successor Company | CLO 2005-2 senior secured notes
Details of Company's borrowings
Collateralized loan obligation secured debt repaid						$ 140,200,000
Par amount of notes issued										242,928,000		$ 242,928,000
Successor Company | CLO 2005-1 senior secured notes
Details of Company's borrowings
Collateralized loan obligation secured debt repaid							$ 142,400,000
Par amount of notes issued										192,384,000		192,384,000
Successor Company | CLO 2005-2 Class E Secured Notes - 2
Details of Company's borrowings
Par amount of notes issued											30,000,000.0
Proceeds from senior notes											30,200,000
Successor Company | CLO 2006-1 senior secured notes
Details of Company's borrowings
Collateralized loan obligation secured debt repaid								$ 181,800,000
Derivative, notional amount terminated								$ 84,000,000
Par amount of notes issued										166,841,000		166,841,000
Successor Company | CLO 2006-1 Class E Secured Notes
Details of Company's borrowings
Par amount of notes issued										15,000,000.0		15,000,000.0
Proceeds from senior notes										15,000,000
Successor Company | CLO 2007-A senior secured and junior secured mezzanine notes
Details of Company's borrowings
Collateralized loan obligation secured debt repaid												494,900,000
Successor Company | CLO 2007-1 mezzanine notes
Details of Company's borrowings
Collateralized loan obligation secured debt repaid											887,100,000
Par amount of notes issued										489,723,000		489,723,000
Successor Company | Senior Notes Legacy CLO
Details of Company's borrowings
Collateralized loan obligation secured debt repaid										500,800,000
Successor Company | CLO 2011-1 senior debt
Details of Company's borrowings
Collateralized loan obligation secured debt repaid										49,400,000	153,200,000
Par amount of notes issued										402,515,000	249,301,000	402,515,000
Successor Company | CLO 2007-1 Class D and E secured notes
Details of Company's borrowings
Par amount of notes issued											35,000,000.0
Proceeds from senior notes											35,100,000
Successor Company | CLO 2007-1 Class E secured notes
Details of Company's borrowings
Par amount of notes issued										37,500,000.0		37,500,000.0
Proceeds from senior notes										37,600,000
Successor Company | CLO 2013-2 secured notes
Details of Company's borrowings
Par amount of notes issued										339,250,000	339,250,000	339,250,000
Successor Company | CLO 9 notes
Details of Company's borrowings
Par amount of notes issued				$ 518,000,000.0
Successor Company | CLO 9 secured notes
Details of Company's borrowings
Par amount of notes issued										463,750,000	463,750,000	463,750,000
Successor Company | CLO 9 secured notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued				$ 463,800,000.0
Successor Company | CLO 9 secured notes | Nonaffiliates | LIBOR
Details of Company's borrowings
Percentage of margin added to reference rate to determine interest rate on debt (in percentage)				2.01%
Successor Company | CLO 9 subordinated notes
Details of Company's borrowings
Par amount of notes issued										15,000,000	15,000,000	15,000,000
Successor Company | CLO 9 subordinated notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued				$ 15,000,000.0
Successor Company | CLO 10 notes
Details of Company's borrowings
Par amount of notes issued			$ 415,600,000.0
Successor Company | CLO 10 senior notes
Details of Company's borrowings
Par amount of notes issued										$ 368,000,000	368,000,000	$ 368,000,000
Successor Company | CLO 10 senior notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued			368,000,000.0
Floating rate senior secured note			343,000,000.0
Fixed rate senior secured note			$ 25,000,000.0
Fixed rate (as a percent)			4.90%
Successor Company | CLO 10 senior notes | Nonaffiliates | LIBOR
Details of Company's borrowings
Percentage of margin added to reference rate to determine interest rate on debt (in percentage)			2.09%
Successor Company | CLO 11 notes
Details of Company's borrowings
Par amount of notes issued		$ 564,500,000
Successor Company | CLO 11 senior secured notes
Details of Company's borrowings
Par amount of notes issued											507,750,000
Successor Company | CLO 11 senior secured notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued		$ 507,800,000
Successor Company | CLO 11 senior secured notes | Nonaffiliates | LIBOR
Details of Company's borrowings
Percentage of margin added to reference rate to determine interest rate on debt (in percentage)		2.06%
Successor Company | CLO 11 subordinated notes
Details of Company's borrowings
Par amount of notes issued											28,250,000
Successor Company | CLO 11 subordinated notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued		$ 28,300,000.0
Successor Company | CLO 13 notes
Details of Company's borrowings
Par amount of notes issued	$ 412,000,000.0
Successor Company | CLO 13 secured notes
Details of Company's borrowings
Par amount of notes issued											370,000,000
Successor Company | CLO 13 secured notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued	370,000,000.0
Floating rate senior secured note	350,000,000.0
Fixed rate senior secured note	$ 20,000,000.0
Fixed rate (as a percent)	3.83%
Successor Company | CLO 13 secured notes | Nonaffiliates | LIBOR
Details of Company's borrowings
Percentage of margin added to reference rate to determine interest rate on debt (in percentage)	2.19%
Successor Company | CLO 13 subordinated notes
Details of Company's borrowings
Par amount of notes issued											$ 4,000,000
Successor Company | CLO 13 subordinated notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued	$ 4,000,000.0
Predecessor Company
Details of Company's borrowings
Collateralized loan obligation secured debt repaid									$ 221,914,000				$ 839,625,000
Predecessor Company | CLO 2005-1 Class D - F secured notes
Details of Company's borrowings
Par amount of notes issued									72,000,000.0
Proceeds from senior notes									71,500,000
Predecessor Company | Senior Notes Legacy CLO
Details of Company's borrowings
Collateralized loan obligation secured debt repaid									182,600,000
Predecessor Company | CLO 2007-A Class D and E secured notes
Details of Company's borrowings
Par amount of notes issued									61,100,000.0
Proceeds from senior notes									61,300,000
Predecessor Company | CLO 2011-1 senior debt
Details of Company's borrowings
Collateralized loan obligation secured debt repaid									39,400,000
Predecessor Company | CLO 2007-1 Class E secured notes
Details of Company's borrowings
Par amount of notes issued									21,900,000.0
Proceeds from senior notes									21,900,000
Predecessor Company | CLO 2007-A Class G secured notes
Details of Company's borrowings
Par amount of notes issued									29,800,000.0
Proceeds from senior notes									30,200,000
Predecessor Company | CLO 2007-A Class H secured notes
Details of Company's borrowings
Par amount of notes issued									29,800,000.0
Proceeds from senior notes									$ 30,100,000
Predecessor Company | CLO 2013-2 secured notes
Details of Company's borrowings
Par amount of notes issued					$ 384,000,000.0
Predecessor Company | CLO 2013-2 secured notes | Nonaffiliates
Details of Company's borrowings
Par amount of notes issued					339,300,000.0
Floating rate senior secured note					319,300,000.0
Fixed rate senior secured note					$ 20,000,000.0
Fixed rate (as a percent)					3.74%
Predecessor Company | CLO 2013-2 secured notes | Nonaffiliates | LIBOR
Details of Company's borrowings
Percentage of margin added to reference rate to determine interest rate on debt (in percentage)					2.16%