Note 10 - Main Street Term Loan (Details Textual) - MSLP Note [Member] - USD ($) $ in Millions		12 Months Ended
Dec. 08, 2020	Dec. 08, 2024
Debt Instrument, Face Amount	$ 50
Debt Instrument, Term (Year)	5 years
Forecast [Member]
Debt Instrument, Percentage of Outstanding Principal to be Paid with Accrued Unpaid Interest		15.00%
London Interbank Offered Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	3.00%

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