Note 9 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

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

	Fair value measurements as of September 30, 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	$	354,537	$	—	$	—	$	354,537
Equity securities		130		—		—		130
Equity Method - Fair value option		92,166		—		—		92,166
Common stock options		—		2		—		2
Total assets	$	446,833	$	2	$	—	$	446,835

	Fair value measurements as of December 31, 2023
	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	$	32,404	$	—	$	—	$	32,404
Equity securities		116		—		—	$	116
Equity Method - fair value option		9,786		—		—		9,786
Common stock options/warrants		—		2		—		2
Total assets	$	42,306	$	2	$	—	$	42,308
Liabilities:
Forward contracts		—		29		—		29
Total liabilities	$	—	$	29	$	—	$	29

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

	September 30, 2024
	Carrying		Total
(In thousands)	Value		Fair Value		Level 1		Level 2		Level 3
2029 Convertible Notes	$	178,645	$	396,652	$	—	$	396,652	$	—
2025 Notes	$	170	$	170	$	—	$	170	$	—

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

	September 30, 2024
	Embedded conversion
(In thousands)	option
Balance at December 31, 2023	$	—
Additions		125,620
Change in fair value:
Included in results of operations		26,250
Reclassification of embedded derivatives to equity		(151,870	)
Balance at September 30, 2024	$	—