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OIL AND NATURAL GAS PROPERTIES - Divestitures (Details) - USD ($)
$ in Thousands
6 Months Ended
Sep. 01, 2021
Jun. 30, 2022
Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Proceeds from divestures   $ 17 $ 0
Disposal Group, Disposed of by Sale, Not Discontinued Operations | TWL Investments      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Proceeds from divestures $ 200    
Book value of divestures 3,000    
Book value of asset retirement obligation $ 5,700