CORPORATE LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Concentration risk
Estimated fair value of corporate loans	$ 3,305,264	$ 5,188,610
Corporate Loan Portfolio Segment | Successor Company | Corporate loans, at estimated fair value | Percent to total investment in corporate loans, debt securities and other investments | Top Twenty Issuers
Concentration risk
Concentration risk (as a percent)	21.00%
Corporate Loan Portfolio Segment | Successor Company | Corporate loans, at estimated fair value | Percent to total investment in corporate loans, debt securities and other investments | Single Issuer of the Top Twenty Issuers
Concentration risk
Concentration risk (as a percent)	2.00%
Corporate Loan Portfolio Segment | Successor Company | Corporate loans, at estimated fair value | Percent to total investment in corporate loans, debt securities and other investments | Top three largest
Concentration risk
Concentration risk (as a percent)		8.00%
Corporate Loan Portfolio Segment | Successor Company | Corporate Loans Held for Sale | Percent to total investment in corporate loans, debt securities and other investments | Top Twenty Issuers
Concentration risk
Concentration risk (as a percent)		31.00%
Corporate Loan Portfolio Segment | Successor Company | Corporate Loans Held for Sale | Percent to total investment in corporate loans, debt securities and other investments | Top three largest
Concentration risk
Estimated fair value of corporate loans		$ 434,600