Note 4 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

	March 31, 2022
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market funds	$	151,231	$	-	$	-	$	151,231
Other liabilities:
Fair value of contingent consideration	$	-	$	-	$	942,609	$	942,609

	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