Note 9 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	March 31, 2023
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial Assets:
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year	$	-	$	5,369,536	$	-
Equity Securities:
Domestic Equities		2,374,520		-		-
International Equities		286,086		-		-
Others		129,499		-		-
	$	2,790,105	$	5,369,536	$	-

	December 31, 2022
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs
Financial Assets:
Available-for-Sale Debt Securities – U.S. Treasury Bills Maturing within 1 Year	$	-	$	4,208,648	$	-
Equity Securities:
Domestic Equities		1,720,410		-		-
International Equities		448,405		-		-
Others		134,144		-		-
	$	2,302,959	$	4,208,648	$	-