Note 1 - Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Asset Retirement Obligations [Table Text Block]

	2019			2018
Beginning of period	$	17,003,486		$	17,366,270
Liabilities incurred		3,745			-
Liabilities settled		(58,622	)		(676,425	)
Accretion expense		273,023			313,641
End of period	$	17,221,632		$	17,003,486