EARNINGS PER UNIT - Computations of Net Income (Loss) Per Unit (Additional Information) (Details)	6 Months Ended
Jun. 30, 2019 shares
Performance Share Awards
Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share computation (in shares)	0
OCGH Units
Earnings Per Share [Line Items]
Vesting period	5 years 8 months 12 days
OCGH Units \| Minimum
Earnings Per Share [Line Items]
Vesting period	4 years
OCGH Units \| Maximum
Earnings Per Share [Line Items]
Vesting period	10 years
Performance Share Awards
Earnings Per Share [Line Items]
Exchange ratio	1
Vesting period	10 years
OCGH Units
Earnings Per Share [Line Items]
Exchange ratio	1
OCGH Issued (in shares)	84,001,461
OCGH Units \| Performance Share Awards
Earnings Per Share [Line Items]
Maximum number of awards issuable (in shares)	340,000
Class A Units
Earnings Per Share [Line Items]
Exchange ratio	1
Antidilutive securities excluded from earnings per share computation (in shares)	84,001,461

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