Note 9 - Long-term Debt - Notes Payable (Details) - Senior Promissory Notes [Member] - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Senior promissory notes	$ 6,000,000	$ 6,000,000
Less: unamortized debt discount	(401,951)	(489,455)
Senior Promissory Notes payable	5,598,049	5,510,545
Senior promissory notes payable, less current portion	$ 5,598,049	$ 5,510,545

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details