Note 7 - Investments in Equity Securities (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Gain (Loss) on Securities [Table Text Block]

					UNREALIZED			REALIZED
	BALANCE		ACQUISITIONS,		GAINS			GAINS		BALANCE
	AT		DISPOSITIONS		(LOSSES)			INCLUDED		AT END
	BEGINNING		AND		INCLUDED			IN		OF
	OF YEAR		SETTLEMENTS		IN EARNINGS			EARNINGS		PERIOD
December 31, 2022	$	1,518,244	$	-	$	(860,273	)	$	-	$	657,971
Year-to-date June 30, 2023		657,971		-		118,482			-		776,453