The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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Note 20 - Subsequent Events (Details Textual)			3 Months Ended	12 Months Ended
Note 20 - Subsequent Events (Details Textual)	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