Note 2 - Fair Value Measurement (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

As of December 31, 2020	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	90,403	$	-	$	-	$	90,403
Total		90,403		-		-		90,403
Liabilities:
Contingent consideration - business combinations		-		-		7,152		7,152
Warrant liability		-		-		2,780		2,780
Total	$	-	$	-	$	9,932	$	9,932

As of December 31, 2019	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	6,448	$	-	$	-	$	6,448
Convertible debt held at fair value		-		-		1,000		1,000
Total		6,448		-		1,000		7,448
Liabilities:
Contingent consideration - business combinations		-		-		1,914		1,914
Warrant liability		-		-		39,602		39,602
Total	$	-	$	-	$	41,516	$	41,516

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

(In thousands)	2020			2019
Beginning balance	$	1,000		$	-
Purchases		-			1,000
Change in fair value recognized in net income		1,319			-
Recognition of accrued interest in fair value upon conversion		58			-
Conversion of convertible debt to preferred stock		(2,377	)		-
Total	$	-		$	1,000

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

(In thousands)	2020		2019
Beginning balance	$	1,914	$	-
Additions		3,663		2,347
Change in fair value recognized in net income		1,575		50
Payments earned, reclassified to accrued liabilities		-		(483	)
Total	$	7,152	$	1,914

Warrant Liabilities [Member]

Notes Tables

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

(In thousands)	2020			2019
Beginning balance	$	39,602		$	28,516
Exercised warrants		(33,221	)		(1,749	)
Change in fair value recognized in net income		(3,601	)		12,835
Total	$	2,780		$	39,602