Note 3 - Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

As of December 31, 2022	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market accounts	$	11,416	$	-	$	-	$	11,416
Available-for-sale securities:
U.S. government securities		15,051		-		-		15,051
Corporate debt securities		-		26,047		-		26,047
Other debt securities		-		3,494		-		3,494
Total		26,467		29,541		-		56,008
Liabilities:
Contingent consideration - business combinations		-		-		4,456		4,456
Debt		-		25,607		-		25,607
Total	$	-	$	25,607	$	4,456	$	30,063

As of December 31, 2021	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	63,873	$	-	$	-	$	63,873
Total		63,873		-		-		63,873
Liabilities:
Contingent consideration - business combinations		-		-		10,027		10,027
Total	$	-	$	-	$	10,027	$	10,027

Contingent Consideration Liabilities [Member]

Notes Tables

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

	Year Ended December 31,
(In thousands)	2022			2021		2020
Beginning balance as of December 31, 2021, 2020, and 2019	$	10,027		$	7,152		1,914
Additions		-			-		3,663
Change in fair value recognized in net (loss) income		(4,754	)		2,875		1,575
Payment of contingent consideration earned		(817	)		-		-
Ending balance	$	4,456		$	10,027	$	7,152

(In thousands)	2021			2020
Beginning balance as of December 31, 2020 and 2019	$	2,780			39,602
Exercised warrants		(2,901	)		(33,221	)
Change in fair value recognized in net (loss) income		121			(3,601	)
Ending balance	$	-		$	2,780