Note 4 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

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

			Active Markets
			for Identical Assets		Significant Other		Significant
			(Unadjusted)		Observable Inputs		Unobservable Inputs
	March 31, 2022		(Level 1)		(Level 2)		(Level 3)		Amortized Cost
Cash equivalents:
Money Market Funds	$	67,052	$	67,052	$	-	$	-	$	67,052
Other current liabilities:
Contingent Consideration - Short Term	$	4,315	$	-	$	-	$	4,315	$	-

			Active Markets
			for Identical Assets		Significant Other		Significant
			(Unadjusted)		Observable Inputs		Unobservable Inputs
	December 31, 2021		(Level 1)		(Level 2)		(Level 3)		Amortized Cost
Cash equivalents:
Money Market Funds	$	67,046	$	67,046	$	-	$	-	$	67,046
Other current liabilities:
Contingent Consideration - Short Term	$	4,315	$	-	$	-	$	4,315	$	-

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Three Months Ended March 31,
	2022		2021
Balance, beginning	$	4,315	$	35,410
Change in fair value		-		(4,820	)
Balance, ending	$	4,315	$	30,590