Note 10 - Common Stock Purchase Agreement (Details Textual) - USD ($) |
3 Months Ended | |||||
|---|---|---|---|---|---|---|
Jul. 08, 2022 |
Sep. 30, 2022 |
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Dec. 31, 2021 |
|
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | ||||
| Stock Issued During Period, Value, New Issues | $ 1,999,500 | $ 2,800,000 | $ 198,555 | $ 495,999 | ||
| Registration Rights Agreement [Member] | ||||||
| Common Stock, Maximum Shares Sold (in shares) | 4,500,000 | |||||
| B. Riley Principal Capital II, LLC (the “Selling Stockholder”) [Member] | ||||||
| Purchase Agreement, Maximum Amount to be Sold | $ 15,000,000 | |||||
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | |||||
| Stock Issued During Period, Shares, New Issues (in shares) | 0 | |||||
| B. Riley Principal Capital II, LLC (the “Selling Stockholder”) [Member] | Registration Rights Agreement [Member] | ||||||
| Stock Issued During Period, Shares, New Issues (in shares) | 89,835 | |||||
| Stock Issued During Period, Value, New Issues | $ 112,500 | |||||
| X | ||||||||||
- Definition Maximum number of shares sold. No definition available.
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| X | ||||||||||
- Definition The maximum amount to be sold under the purchase agreement. No definition available.
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| 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 Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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