Note 5 - Insurance Premium Financing (Details Textual) - IPFS Corporation Insurance Agreement [Member] - USD ($)	Nov. 15, 2023	Nov. 15, 2022
Debt Instrument, Term (Year)	1 year	1 year
Debt Instrument, Face Amount	$ 357,000	$ 612,000
Short-Term Debt, Weighted Average Interest Rate, at Point in Time	8.49%	6.99%

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