Note 2 - Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

			March 31, 2023				December 31, 2022
Financial Assets:	Level		Carrying Value		Fair Value		Carrying Value		Fair Value
Cash and cash equivalents		2	$	7,190,450	$	7,190,450	$	7,148,207	$	7,148,207
Certificates of deposit		2		1,014,886		999,321		1,004,603		999,919
Total			$	8,205,336	$	8,189,771	$	8,152,810	$	8,148,126