EARNINGS PER UNIT - Computations of Net Income (Loss) Per Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net income (loss) per Class A unit (basic and diluted):
Net income (loss) attributable to OCG Class A unitholders, basic	$ (6,335)	$ (21,356)	$ 32,594	$ (10,503)
Weighted average number of Class A units outstanding, diluted (in shares)	160,116	159,907	160,089	159,911
Basic net income (loss) per Class A unit (in dollars per share)	$ (0.06)	$ (0.21)	$ 0.31	$ (0.10)
Diluted net income (loss) per Class A unit (in dollars per share)	$ (0.06)	$ (0.21)	$ 0.31	$ (0.10)
Class A Units
Net income (loss) per Class A unit (basic and diluted):
Net income (loss) attributable to OCG Class A unitholders, basic	$ (6,335)	$ (21,356)	$ 32,594	$ (10,503)
Net income (loss) attributable to OCG Class A unitholders, diluted	$ (6,335)	$ (21,356)	$ 32,594	$ (10,503)
Weighted average number of Class A units outstanding, basic (in shares)	108,796	102,820	105,954	100,989
Weighted average number of Class A units outstanding, diluted (in shares)	108,796	102,820	105,954	100,989
Basic net income (loss) per Class A unit (in dollars per share)	$ (0.06)	$ (0.21)	$ 0.31	$ (0.10)
Diluted net income (loss) per Class A unit (in dollars per share)	$ (0.06)	$ (0.21)	$ 0.31	$ (0.10)