Note 7 - Investments in Equity Securities (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Gain (Loss) on Securities [Table Text Block]

	BALANCE AT BEGINNING OF YEAR		ACQUISITIONS, DISPOSITIONS AND SETTLEMENTS		UNREALIZED GAINS (LOSSES) INCLUDED IN EARNINGS			REALIZED GAINS INCLUDED IN EARNINGS		BALANCE AT END OF PERIOD
December 31, 2021	$	1,534,400	$	19,698	$	(188,615	)	$	152,761	$	1,518,244
Year-to-date June 30, 2022		1,518,244		-		(434,069	)		-		1,084,175

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

	Quoted Market Prices in Attractive Markets (Level 1)		Models with Significant Observable Market Parameters (Level 2)		Unobservable Inputs that are not Corroborated by Market Data (Level 3)		Total Carrying Value in the Balance Sheet
Common stock as of June 30, 2022	$	1,084,175	$	-	$	-	$	1,084,175
Common stock as of December 31, 2021	$	1,518,244	$	-	$	-	$	1,518,244