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Note 19 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions |  | 1 Months Ended | 3 Months Ended
--- | --- | --- | ---
Feb. 23, 2024 | Feb. 29, 2024 USD ($) shares | Mar. 31, 2024 USD ($)
Restructuring and Related Cost, Number of Positions Eliminated | 110 |  |
Unsecured Debt [Member] | Conversion of Interest From Stock Payment [Member] |  |  |
Debt Instrument, Face Amount |  | $ 19 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares |  | 122,600 |
Unsecured Notes from Board of Directors [Member] |  |  |
Proceeds from Unsecured Notes Payable |  |  | $ 5
Debt Instrument, Interest Rate, Stated Percentage |  |  | 12.00%

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