Note 9 - 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, 2016	Dec. 31, 2015
Crude oil and natural gas sales	$ 3,439,081	$ 5,728,206
Production costs	(2,164,682)	(2,734,789)
Depreciation, depletion and amortization	(4,753,321)	(12,363,647)
Accretion expense	(393,535)	(583,792)
Write down/impairment and abandonment of crude oil and natural gas properties	(88,329)	(9,575,275)
Results of operations before income tax expense (benefit)	(3,960,786)	(19,529,297)
Income tax expense (benefit)	(20,000)	11,000
Results of operations for oil and gas producing activities (excluding corporate overhead and financing costs)	$ (3,940,786)	$ (19,540,297)