SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 663,160	$ 336,181
Realized loss on derivatives	(22,439)	(25,913)
Unrealized loss on derivatives	(75,029)	(43,423)
Total revenues	565,692	266,845
Oil revenues
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	460,122	213,279
Natural gas revenues
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	166,393	102,954
Third-party midstream services revenues
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	17,306	15,438
Sales of purchased natural gas
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 19,339	$ 4,510