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Note 9 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Net operating loss carryforwards	$ 78,632	$ 43,148
Legal reserves	6,563	0
Share-based compensation	5,319	4,814
Research and development credit carryforwards	13,480	13,789
Capitalized research and development expenses	6,919	33,598
Other	985	1,340
Total deferred tax assets	111,898	96,689
Valuation allowance	(111,896)	(96,689)
Net deferred tax assets	2	0
Intangibles	(2)	0
Total deferred tax liabilities	(2)	0
Net deferred tax asset (liability)	$ 0	$ 0

X

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