Note 18 - Subsequent Events (Details Textual) - USD ($)	3 Months Ended
Mar. 31, 2023	Dec. 09, 2022
Excluded Unsecured Note [Member]
Debt Instrument, Face Amount		$ 2,023
Forbearance and Line of Credit Agreement [Member]
Debt Instrument, Face Amount		$ 2,023
Subsequent Event [Member] \| Exchange Issuance of Stock for Payment on Outstanding Debt and Payment on Prepaid Advance Agreement With Yorkville [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares)	28,313,924

Face (par) amount of debt instrument at time of issuance.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant