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PROPERTY AND EQUIPMENT (Summary of Non-producing Properties Excluded from Amortization by Area) (Details)
$ in Thousands
Jun. 30, 2021
USD ($)
Property, Plant and Equipment [Line Items]  
Total unproved properties $ 224,214
Utica  
Property, Plant and Equipment [Line Items]  
Total unproved properties 186,036
SCOOP  
Property, Plant and Equipment [Line Items]  
Total unproved properties $ 38,178