Note 5 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

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

	September 30, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	980,112	$	-	$	-	$	980,112

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	1,600,663	$	-	$	-	$	1,660,663
Other liabilities:
Fair value of contingent consideration	$	-	$	-	$	930,000	$	930,000

Fair value of contingent consideration:
December 31, 2021	$	930,000
Change in fair value		12,609
March 31, 2022		942,609
Change in fair value		(942,609	)
June 30, 2022		-
Change in fair value		-
September 30, 2022	$	-

Fair Value Measurements, Nonrecurring [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Impairment of goodwill	$	2,254,624	$	-	$	2,254,624	$	-