Note 15 - Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2025

Notes Tables

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

	September 30, 2025
	(in thousands)
	Level 1		Level 2		Level 3		Total
Assets
Cash Equivalents:
Certificates of deposit (1)	$	—	$	1,704	$	—	$	1,704
Money market funds		—		4,204		—		4,204
U.S. treasury bills		—		187,127		—		187,127
Prepaid expenses and other current assets:
Certificates of deposit (1)		—		339		—		339
Other assets:
Certificates of deposit (1)		—		206		—		206
Total	$	—	$	193,580	$	—	$	193,580
Liabilities:
Accrued expenses and other current liabilities:
Mandatorily redeemable noncontrolling interest (2)	$	—	$	—	$	5,679	$	5,679
Total	$	—	$	—	$	5,679	$	5,679

	December 31, 2024
	(in thousands)
	Level 1		Level 2		Level 3		Total
Assets
Cash Equivalents:
Certificates of deposit (1)	$	—	$	1,504	$	—	$	1,504
Money market funds		—		4,188		—		4,188
U.S. treasury bills		—		181,210		—		181,210
Prepaid expenses and other current assets:
Certificates of deposit (1)		—		165		—		165
Other assets:
Certificates of deposit (1)		—		39		—		39
Notes receivables (3)		—		—		3,938		3,938
Total	$	—	$	187,106	$	3,938	$	191,044
Liabilities:
Other liabilities:
Warrant liabilities (4)	$	—	$	1,861	$	—	$	1,861
Total	$	—	$	1,861	$	—	$	1,861

Debt Securities, Available-for-Sale [Table Text Block]

	September 30, 2025
	(in thousands)
	Amortized Cost		Fair Value		Gross Unrealized Gains
U.S. treasury bills	$	187,106	$	187,127	$	21
Total	$	187,106	$	187,127	$	21

	December 31, 2024
	(in thousands)
	Amortized Cost		Fair Value		Gross Unrealized Losses
U.S. treasury bills	$	181,217	$	181,210	$	(7	)
Total	$	181,217	$	181,210	$	(7	)