FAIR VALUE - Changes in Fair Value (Details) - Oaktree Capital Group Excluding Consolidated Funds - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Corporate Investments
Beginning balance	$ 77,657	$ 26,581	$ 74,663	$ 25,750
Contributions or additions	5	0	209	0
Distributions	(5,482)	0	(9,052)	0
Net gain (loss) included in earnings	3,460	808	9,820	1,639
Ending balance	75,640	27,389	75,640	27,389
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	(239)	808	3,788	1,639
Contingent Consideration Liability
Beginning balance	(24,029)	(24,995)	(23,567)	(28,494)
Contributions or additions	0	0	0	0
Distributions	0	0	0	0
Net gain (loss) included in earnings	4,921	1,254	4,459	4,753
Ending balance	(19,108)	(23,741)	(19,108)	(23,741)
Net change in unrealized gains (losses) attributable to financial instruments still held at end of period	$ 4,921	$ 1,254	$ 4,459	$ 4,753