Note 4 - Fair Value (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

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

	June 30, 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)	$	7,675	$	-	$	-	$	7,675
Restricted cash		1,354		-		-		1,354
Short-term investments		-		32,297		-		32,297
Total assets measured at fair value	$	9,029	$	32,297	$	-	$	41,326
Liabilities measured at fair value
Contingent consideration	$	-	$	-	$	1,564	$	1,564
Total liabilities measured at fair value	$	-	$	-	$	1,564	$	1,564

	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	June 30, 2023		December 31, 2022
Contingent consideration	Probability weighted income approach	Milestone dates	2032		2032
		Discount rate		15.0%		16.5%
		Revenue volatility		45.0%		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, 2022	$	1,256
Change in fair value		308
Balance at June 30, 2023	$	1,564
Reported as:
Current portion	$	-
Long-term portion		1,564
Balance at June 30, 2023	$	1,564