Note 12 - Restatement of Quarterly Financial Information (Unaudited) - Restatement (Details) (Parentheticals) - $ / shares |
Dec. 31, 2023 |
Sep. 30, 2023 |
May 30, 2023 |
Dec. 31, 2022 |
Aug. 01, 2018 |
Dec. 31, 2015 |
|---|---|---|---|---|---|---|
| Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 | |
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | $ 0.001 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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