Note 2 - Significant Accounting Policies (Details Textual)	May 24, 2021	Sep. 30, 2023 shares
Shares Prescribed Aggregation (in shares)		50,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-4

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