Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Summary of Open Commodity Basis Swap Contracts (Details)

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DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Summary of Open Commodity Basis Swap Contracts (Details) - Basis Swap Contracts
9 Months Ended
Sep. 30, 2019
$ / bbl
bbl
Derivative [Line Items]  
Total Volume (in barrels) | bbl 920,000
Weighted Average Differential (in dollars per barrel) | $ / bbl (2.41)