SECURITIES (Details 3) (Successor Company, USD $) In Thousands, unless otherwise specified	0 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
Concentration risk
Securities	$ 592,270	$ 638,605	592,270
Number of issuers with whom a specified percentage of estimated fair value of corporate debt securities is concentrated (in issuers)	10	10	10
Number of largest issuers with whom a specified percentage of estimated fair value of debt securities is concentrated (in issuers)	3	3	3
Estimated fair value of securities pledged as collateral
Pledged as collateral for collateralized loan obligation secured debt	227,818	262,085	227,818
Total	227,818	262,085	227,818
Corporate Debt Securities | Percent to total investment in corporate loans, debt securities and other investments | Top three largest
Concentration risk
Concentration risk of total fair value (as a percent)	41.00%	37.00%
Securities	$ 219,100	$ 213,600	219,100
Corporate Debt Securities | Percent to total investment in corporate loans, debt securities and other investments | Ten issuers
Concentration risk
Concentration risk of total fair value (as a percent)		70.00%	73.00%