Note 7 - Supplemental Information Relating to Oil and Gas Producing Activities (Unaudited) - Results of Operations for Oil and Gas Producing Activities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Crude oil and natural gas sales	$ 9,067,189	$ 3,413,680
Production costs	(2,294,111)	(1,955,265)
Depreciation, depletion and amortization	(369,120)	(970,115)
Accretion expense	(212,410)	(243,468)
Results of operations before income tax benefit	6,191,548	244,832
Income tax benefit	110,000	70,000
Results of operations for oil and gas producing activities (excluding corporate overhead and financing costs)	$ 6,301,548	$ 314,832