Annual report pursuant to Section 13 and 15(d)

Note 19 - Supplemental Oil and Gas Disclosures - Schedule of Prices Weighted by Field Production Related to Proved Reserves (Details)

v3.20.4
Note 19 - Supplemental Oil and Gas Disclosures - Schedule of Prices Weighted by Field Production Related to Proved Reserves (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Oil [Member]        
Weighted price $ 37.78 $ 58.11 $ 65.21 $ 46.58
Natural Gas Liquids [Member]        
Weighted price 10.29 18.72 29.73 22.65
Natural Gas [Member]        
Weighted price $ 2.05 $ 2.63 $ 3.13 $ 2.86