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v3.23.2

Note 13 - Subsequent Events (Details Textual) - USD ($) |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Aug. 09, 2023 | Aug. 02, 2023 | Jun. 30, 2023 | Jun. 30, 2023 | Jun. 30, 2022 | Mar. 17, 2023
Proceeds from Issuance of Common Stock |  |  |  | $ 56,266 | $ 0 |
Gray Matters [Member] |  |  |  |  |  |
Disposal Group, Including Discontinued Operation, Percentage of Equity Sold |  |  |  |  |  | 75.10%
Subsequent Event [Member] |  |  |  |  |  |
Equity Method Investment, Realized Gain (Loss) on Disposal | $ 382,525 |  |  |  |  |
Investment Owned, Net Assets, Percentage | 0.00% |  |  |  |  |
Subsequent Event [Member] | GMDC [Member] |  |  |  |  |  |
Proceeds from Sale of Equity Method Investments | $ 1,400,000 |  |  |  |  |
Subsequent Event [Member] | GMI Subsidiary [Member] |  |  |  |  |  |
Proceeds From Setllement of Contingent Consideration Receivable | 1,000,000 |  |  |  |  |
Common Stock Purchase Agreement [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  | 0 |  |  |
Common Stock Purchase Agreement [Member] | Subsequent Event [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 200,000 |  |  |  |
Shares Issued, Price Per Share (in dollars per share) |  | $ 0.59 |  |  |  |
Shares Issued, Fees Per Share (in dollars per share) |  | $ 0.03 |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 118,655 |  |  |  |
Common Stock [Member] | Subsequent Event [Member] | GMDC [Member] |  |  |  |  |  |
Proceeds from Sale of Equity Method Investments | $ 400,000 |  |  |  |  |

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