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Note 12 - Capital Stock (Details Textual) |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 06, 2021 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 08, 2022 USD ($) | Apr. 25, 2022 $ / shares shares | Dec. 31, 2020 shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.001 |
Proceeds from Issuance of Common Stock | $ |  |  | $ 205,389 | $ 62,850,213 |  |  |
Payments of Stock Issuance Costs | $ |  |  | 242,866 | 3,663,291 |  |  |
Offering of Debt Securities and Warrants, Maximum (in shares) |  |  |  |  |  | 500,000,000 |
Maximum Shares of Common Stock Registered by Certain Selling Shareholders (in shares) |  |  |  |  |  | 8,297,093 |
Stock Issued During Period, Value, New Issues | $ |  |  | $ 205,389 | $ 62,850,213 |  |  |
Class of Warrant or Right, Outstanding (in shares) |  | 105,556 | 105,556 | 105,556 |  |  | 105,556
Warrants for Common Class B Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  | 104,772 | 104,772 |  |  |  |
Warrants for Common Class A Stock [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Outstanding (in shares) |  | 784 | 784 |  |  |  |
Common Class A [Member] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  | $ 0.001 | $ 0.001 | $ 0.001 |  |  |
Common Class B [Member] |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  | $ 0.001 | $ 0.001 | $ 0.001 |  |  |
Common Stock, Voting Rights Per Share |  | 10 | 10 |  |  |  |
Public Offering Including Over-allotment Option [Member] | Common Class A [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,645,000 |  |  |  |  |  |
Public Offering [Member] | Common Class A [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,345,000 |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | $ 0.001 |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | $ 25.00 |  |  |  |  |  |
Proceeds from Issuance of Common Stock | $ | $ 58,625,000 |  |  |  |  |  |
Stock Sale Agreement, Percent of Gross Proceeds | 5.50% |  |  |  |  |  |
Proceeds from Issuance of Common Stock, Net | $ | $ 55,400,625 |  |  |  |  |  |
Payments of Stock Issuance Costs | $ | $ 133,169 |  |  |  |  |  |
Over-Allotment Option [Member] | Common Class A [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 345,000 |  |  |  |  |  |
Sold by Selling Stockholder [Member] | Common Class A [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 300,000 |  |  |  |  |  |
At The Market Offering [Member] | Common Class A [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 7,887 |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ |  | $ 205,389 |  |  |  |  |
Commission, Percent of Gross Sales Price Per Share |  | 3.00% |  |  |  |  |
At The Market Offering [Member] | Common Class A [Member] | Maximum [Member] |  |  |  |  |  |  |
Equity Offering Program, Aggregate Share Price | $ |  | $ 100,000,000 | $ 100,000,000 |  | $ 100,000,000 |  |

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