Annual report pursuant to Section 13 and 15(d)

Supplemental Oil and Gas Disclosures - Additional Information (Details)

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Supplemental Oil and Gas Disclosures - Additional Information (Details)
12 Months Ended
Dec. 31, 2018
Capitalized Costs Oil And Gas Producing Activities Net [Abstract]  
Percentage non-operated non-producing reserves 13.00%
Present value discounted percentage 10.00%