Note 2 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Retained Earnings (Accumulated Deficit)	$ (933,352)	$ (806,222)

Amount of accumulated undistributed earnings (deficit).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 944
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-Topic 946
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant