Note 9 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

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

	Fair value measurements as of March 31, 2025
	Quoted
	prices in
	active		Significant
	markets for		other		Significant
	identical		observable		unobservable
	assets		inputs		inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Money market funds	$	222,478	$	—	$	—	$	222,478
Equity securities		7,830		—		—		7,830
Common stock options		—		3		—		3
Total assets	$	230,308	$	3	$	—	$	230,311
Liabilities:
Forward contracts	$	—	$	262	$	—	$	262
Total liabilities	$	—	$	262	$	—	$	262

	Fair value measurements as of December 31, 2024
	Quoted
	prices in
	active		Significant
	markets for		other		Significant
	identical		observable		unobservable
	assets		inputs		inputs
(In thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Money market funds	$	282,121	$	—	$	—	$	282,121
Equity securities		49,655		—		—	$	49,655
Common stock options/warrants		—		3		—		3
Total assets	$	331,776	$	3	$	—	$	331,779

Fair Value, by Balance Sheet Grouping [Table Text Block]

	March 31, 2025
	Carrying		Total
(In thousands)	Value		Fair Value		Level 1		Level 2		Level 3
2029 Convertible Notes	$	178,417	$	467,609	$	—	$	467,609	$	—