Note 4 - Fair Value (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

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

	March 31, 2023
	(in thousands)
Description	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets measured at fair value
Cash and cash equivalents (1)	$	18,737	$	-	$	-	$	18,737
Restricted cash		1,142		-		-		1,142
Short-term investments		-		37,697		-		37,697
Long-term investments		-		958		-		958
Total assets measured at fair value	$	19,879	$	38,655	$	-	$	58,534
Liabilities measured at fair value
Contingent consideration	$	-	$	-	$	1,361	$	1,361
Total liabilities measured at fair value	$	-	$	-	$	1,361	$	1,361

	December 31, 2022
	(in thousands)
Description	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets measured at fair value
Cash and cash equivalents (1)	$	6,329	$	-	$	-	$	6,329
Restricted cash		1,141		-		-		1,141
Short-term investments		-		64,195		-		64,195
Long-term investments		-		3,865		-		3,865
Total assets measured at fair value	$	7,470	$	68,060	$	-	$	75,530
Liabilities measured at fair value
Contingent consideration	$	-	$	-	$	1,256	$	1,256
Total liabilities measured at fair value	$	-	$	-	$	1,256	$	1,256

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	Valuation Methodology	Significant Unobservable Input	March 31, 2023		December 31, 2022
Contingent consideration	Probability weighted income approach	Milestone dates	2032		2032
		Discount rate		16.0%		16.5%
		Revenue volatility		40.0%		45.0%
		EUR-to-USD exchange rate		1.09		1.07

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

	Fair Value Measurement at Reporting Date (Level 3)
	(in thousands)
	Contingent consideration
Balance at December 31, 2021	$	2,371
Change in fair value		(154	)
Balance at March 31, 2022	$	2,217
Balance at December 31, 2022	$	1,256
Change in fair value		105
Balance at March 31, 2023	$	1,361
Current portion	$	-
Long-term portion		1,361
Balance at March 31, 2023	$	1,361