Note 11 - Subsequent Events (Details Textual) - USD ($) |
Mar. 25, 2022 |
Dec. 31, 2021 |
Sep. 03, 2021 |
Dec. 31, 2020 |
|---|---|---|---|---|
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |
| Subsequent Event [Member] | Tumim Stone Capital, LLC [Member] | ||||
| Stock Purchase Agreement, Maximum Obligated Purchase Amount | $ 10,000,000 | |||
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | |||
| Stock Issued During Period, Shares, New Issues (in shares) | 50,000 | |||
| Stock Issued During Period, Value, New Issues | $ 100,000 | |||
| Stock Purchase Agreement, Maximum Issuable Shares (in shares) | 7,361,833 | |||
| Stock Purchase Agreement, Maximum Issuable Shares, Percent | 19.99% | |||
| Stock Purchase Agreement, Ownership Limitation, Percent | 4.99% | |||
| Stock Purchase Agreement, Ownership Limitation Option, Percent | 9.99% | |||
| Stock Purchase Agreement, Purchase Price Per Share, Percent | 95.00% |
| X | ||||||||||
- Definition The maximum issuable shares under stock purchase agreement. No definition available.
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| X | ||||||||||
- Definition The percent outstanding of maximum issuable shares under stock purchase agreement. No definition available.
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| X | ||||||||||
- Definition The maximum obligated purchase amount under stock purchase agreement. No definition available.
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| X | ||||||||||
- Definition The ownership limitation option percent under stock purchase agreement. No definition available.
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| X | ||||||||||
- Definition The percent stock ownership limitation under stock purchase agreement. No definition available.
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| X | ||||||||||
- Definition The purchase price per share as a percent of stock price under stock 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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