Unevaluated Property (Details Textuals)	12 Months Ended
	Dec. 31, 2021
Maximum
Capitalized Costs of Unproved Properties Excluded from Amortization
Anticipated timing of inclusion of costs in amortization calculation	10 years
Minimum
Capitalized Costs of Unproved Properties Excluded from Amortization
Anticipated timing of inclusion of costs in amortization calculation	5 years