Note 7 - Investments in Equity Securities (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Gain (Loss) on Securities [Table Text Block]

	BALANCE AT BEGINNING OF YEAR		ACQUISITIONS, DISPOSITIONS AND SETTLEMENTS		UNREALIZED GAINS INCLUDED IN EARNINGS			REALIZED GAINS INCLUDED IN EARNINGS		BALANCE AT DECEMBER 31
2020	$	-	$	949,293	$	585,107		$	-	$	1,534,400
2021	$	1,534,400	$	19,698	$	(188,615	)	$	152,761	$	1,518,244

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	$	1,518,244	$	-	$	-	$	1,518,244

	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	$	1,534,400	$	-	$	-	$	1,534,400