Schedule of Average First Day of the Month Price for Oil, Natural Gas and Natural Gas Liquids (Details)	12 Months Ended
	Dec. 31, 2020 $ / bbl $ / Mcf	Dec. 31, 2019 $ / bbl $ / Mcf	Dec. 31, 2018 $ / bbl $ / Mcf
Oil [Member]
Oil and Gas Average Sale Price and Production Cost Per Unit [Line Items]
Unweighted Arithmetic Average First-Day-of-the-Month Prices	39.57	55.69	65.56
Natural Gas [Member]
Oil and Gas Average Sale Price and Production Cost Per Unit [Line Items]
Unweighted Arithmetic Average First-Day-of-the-Month Prices | $ / Mcf	1.99	2.58	3.10
Natural Gas Liquids [Member]
Oil and Gas Average Sale Price and Production Cost Per Unit [Line Items]
Unweighted Arithmetic Average First-Day-of-the-Month Prices	12.27	13.37	25.57