Note 6 - Fair Value Measurements - Summary of Warrant Activity (Details) - Warrant Liability [Member] $ in Thousands	12 Months Ended
Dec. 31, 2023 USD ($)
Beginning balance	$ 3,473
Change in fair value of warrants	(2,440)
Ending balance	$ 1,033

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