Note 1 - Nature of Operation (Additional Information) (Details) $ / shares in Units, $ in Thousands	Sep. 24, 2023 USD ($) $ / shares shares
Proceeds from issuance of private placement \| $	$ 7,500
Common shares, issued	1,951,371
Purchase of pre funded warrants	2,106,853
Purchase price per common share \| $ / shares	$ 1.848
Purchase of common shares	2,536,391

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant