EARNINGS PER UNIT - Computations of Net Income (Loss) Per Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Line Items]
Net income attributable to OCG Class A unitholders	$ 10,853	$ 278,719
Weighted average number of Class A units outstanding, diluted (in shares)	159,916	160,050
Class A Units
Earnings Per Share [Line Items]
Net income attributable to OCG Class A unitholders, diluted	$ 10,853	$ 278,719
Net income attributable to OCG Class A unitholders	$ 10,853	$ 278,719
Weighted average number of Class A units outstanding, basic (in shares)	99,137	98,708
Weighted average number of Class A units outstanding, diluted (in shares)	99,137	98,708
Basic net income per Class A unit (in dollars per share)	$ 0.11	$ 2.82
Diluted net income per Class A unit (in dollars per share)	$ 0.11	$ 2.82