v3.23.1

Note 20 - Subsequent Events (Details Textual) |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 01, 2023 GBP (£) | Jun. 17, 2020 shares | Mar. 27, 2023 $ / shares shares | Dec. 31, 2022 shares | Jun. 30, 2022 $ / shares
Common Stock [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares |  |  |  | 7,585,529 |
Equity Purchase Agreement [Member] | Lincoln Park [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares |  | 3,437,087 |  | 400,000 |
Shares Issued, Price Per Share (in dollars per share) | $ / shares |  |  |  |  | $ 2.70
Subsequent Event [Member] | Equity Purchase Agreement [Member] | Lincoln Park [Member] | Common Stock [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares |  |  | 2,865,802 |  |
Shares Issued, Price Per Share (in dollars per share) | $ / shares |  |  | $ 0.248 |  |
Chief Operating Officer [Member] | Subsequent Event [Member] |  |  |  |  |
Severance Costs | £ | £ 315,418.77 |  |  |  |
Payment for Pension and Other Postretirement Benefits, Total | £ | 3,400 |  |  |  |
Legal Fees | £ | £ 2,000 |  |  |  |

X
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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