ORGANIZATION (Details)		12 Months Ended
	Apr. 30, 2014	Dec. 31, 2016
Series A LLC Preferred Shares
Definitive merger agreement
Preferred shares, dividend rate (as a percent)		7.375%
Predecessor Company | Series A LLC Preferred Shares
Definitive merger agreement
Preferred shares, dividend rate (as a percent)	7.375%
Predecessor Company | KFN | KKR & Co.
Definitive merger agreement
Stock exchange ratio to be applied in the merger transaction	0.51