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Distributions to Parent Per Unit

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Represents the number of issuers of the investments in which the reporting entity invested.

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Represents the common share offering for which the management fees were waived by the manager.

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Represents the common share rights offering for which the management fees were waived by the manager.

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Represents the fees waived by the related party.

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Represents the minimum affirmative votes required of the entity's independent directors for the termination of the management agreement.

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No definition available.

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Represents the prior notice period for termination of Management Agreement.

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Represents the number of times the sum of the average annual base management fee and the average annual incentive fee for the first two 12-month periods is multiplied to determine the termination fee.

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No definition available.

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Represents the specified period immediately preceding the date of termination for which the average annual incentive fee is considered for the calculation of the termination fee.

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No definition available.

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Represents the number of times the specified period for which the average annual incentive fee needs to be considered for the calculation of termination fee.

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Represents the minimum closing price per share of the common stock traded on the stock exchange required until which base management fees for the common share offering are no longer waived.

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No definition available.

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Represents the percentage of ownership in subordinated note.

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Represents the number of consecutive trading days required until which base management fees for the common share offering are no longer waived.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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MANAGEMENT AGREEMENT AND RELATED PARTY TRANSACTIONS (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended			4 Months Ended	5 Months Ended	9 Months Ended	12 Months Ended
	May. 31, 2014 USD ($)	Sep. 30, 2015 USD ($) issuer $ / shares	Sep. 30, 2014 USD ($)	Sep. 30, 2007 USD ($)	Apr. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) issuer period $ / shares	Dec. 31, 2014 USD ($) issuer	May. 23, 2014 $ / shares
Management Agreement and Related Party Transactions
Distribution to parent		$ 52,100					$ 141,600
Successor Company
Management Agreement and Related Party Transactions
Related party transaction expense		$ 9,449	$ 12,544			$ 22,950	29,486
Distribution to parent	$ 44,900					392,923	$ 141,566
Distributions to parent per unit (in dollars per share) \| $ / shares									$ 0.43
Successor Company \| CLO Management Fees \| Maximum
Management Agreement and Related Party Transactions
Entity's percentage in subordinated notes							100.00%
Successor Company \| CLO Management Fees \| CLO 2013-1 and CLO 2013-2
Management Agreement and Related Party Transactions
Entity's percentage in subordinated notes							100.00%
Successor Company \| Manager
Management Agreement and Related Party Transactions
Renewal period (in years)							1 year
Votes for termination, minimum (as a percent)		66.70%					66.70%
Notice period for termination (in days)							180 days
Multiplier used to determine termination fee							4
Number of 12 month periods considered for calculation of termination fee (in periods) \| period							2
Specified period for which average annual incentive fee to be considered (in months)							12 months
Successor Company \| Manager \| Base Management Fees
Management Agreement and Related Party Transactions
Common share closing price, minimum (in dollars per share) \| $ / shares		$ 20.00					$ 20.00
Number of consecutive trading days							5 days
Related party transaction expense		$ 2,633	4,986			10,927	$ 8,096
Successor Company \| Manager \| Incentive Fees
Management Agreement and Related Party Transactions
Related party transaction expense		0	0			0	0
Successor Company \| Manager \| Manager Share-Based Compensation
Management Agreement and Related Party Transactions
Related party transaction expense		0	0			0	0
Successor Company \| Manager \| Reimbursable General And Administrative Expenses
Management Agreement and Related Party Transactions
Related party transaction expense		700	800			1,800	4,200
Successor Company \| Collateral manager \| CLO Management Fees
Management Agreement and Related Party Transactions
Fees, waived		400	1,400			3,000	1,500
Related party transaction expense		6,816	$ 7,558			$ 12,023	21,390
Predecessor Company
Management Agreement and Related Party Transactions
Related party transaction expense					$ 29,841
Predecessor Company \| Manager \| Base Management Fees
Management Agreement and Related Party Transactions
Common shares offering				$ 230,400
Common share right offering				$ 270,000
Fees, waived					2,900
Related party transaction expense					5,253
Predecessor Company \| Manager \| Incentive Fees
Management Agreement and Related Party Transactions
Related party transaction expense					12,882
Predecessor Company \| Manager \| Manager Share-Based Compensation
Management Agreement and Related Party Transactions
Related party transaction expense					690
Predecessor Company \| Manager \| Reimbursable General And Administrative Expenses
Management Agreement and Related Party Transactions
Related party transaction expense					2,800
Predecessor Company \| Collateral manager \| CLO Management Fees
Management Agreement and Related Party Transactions
Fees, waived					1,600
Related party transaction expense					11,016
Restricted common shares \| Predecessor Company
Management Agreement and Related Party Transactions
Share-based compensation					1,018
Restricted common shares \| Predecessor Company \| Manager \| Manager Share-Based Compensation
Management Agreement and Related Party Transactions
Share-based compensation					$ 700
Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value		$ 1,100,000					$ 1,100,000	$ 1,700,000
Investment in affiliates, number of issuers \| issuer		13					13	19
Percent to total investment in corporate loans, debt securities and other investments \| Affiliated Investments \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Concentration risk (as a percent)							16.00%	20.00%
Corporate loans, at estimated fair value \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value		$ 1,100,000					$ 1,100,000
Equity Investments, at Estimated Fair Value \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value		11,000					11,000	$ 13,600
Corporate loans \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value								1,600,000
Corporate Debt Securities \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value								9,500
Joint Ventures And Partnerships \| Affiliated Entity \| Successor Company
Management Agreement and Related Party Transactions
Estimated fair value		$ 569,700					$ 569,700	$ 618,600