Note 3 - Fair Value Measurements - Summary of Change in Estimated Fair VAlue of Level 3 Financial Liabilities (Details) - Warrant [Member] - January 2022 Warrants [Member] - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Balance at December 31, 2022	$ 30,496	$ 60,088	$ 26,881
Change in fair value	(29,231)	(29,592)	33,207
Balance at March 31, 2023	$ 1,265	$ 30,496	$ 60,088

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant