Annual report pursuant to Section 13 and 15(d)

Supplemental Information Relating to Oil And Gas Producing Activities (Unaudited) - Schedule of Proved Oil and Gas Reserves (Details)

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Supplemental Information Relating to Oil And Gas Producing Activities (Unaudited) - Schedule of Proved Oil and Gas Reserves (Details) - bbl
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Oil and Gas Exploration and Production Industries Disclosures [Abstract]    
Proved oil and gas reserves, beginning 1,638,200 2,227,240
Proved oil and gas reserves, Revisions of prior estimates 181,678 (2,186,554)
Proved oil and gas reserves, Purchases of reserves in place 320,865 1,600,935
Proved oil and gas reserves, Production (51,913) (3,421)
Proved oil and gas reserves, Disposition of mineral in place (194,650)  
Proved oil and gas reserves, ending 1,894,180 1,638,200