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Natural Gas and Oil Properties (Tables)
 3 Months Ended
Mar. 31, 2021
Oil and Gas Exploration and Production Industries Disclosures [Abstract]  
Oil and Gas Exploration and Production Industries Disclosures Prices used to calculate the ceiling value of reserves were as follows:
March 31, 2021March 31, 2020
Natural gas (per MMBtu)
$2.16 $2.30 
Oil (per Bbl)
$40.01 $55.77 
NGLs (per Bbl)
$13.57 $9.96