Note 9 - Subsequent Events (Details Textual) - Subsequent Event [Member] - shares |
Oct. 22, 2021 |
Oct. 20, 2021 |
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| Class of Warrant or Right, Issued During Period (in shares) | 550,000 | |
| Restricted Stock [Member] | Advisor [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Month) | 24 months |
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- Definition The number of warrants or rights issued during period. No definition available.
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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