Note 11 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ (225,000)	$ (1,727,000)
Deferred Tax Assets, Valuation Allowance, Percent	100.00%	100.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 733,798
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total		$ 31,990,000
Operating Loss Carryforwards, Not Subject to Expiration		902,000
Operating Loss Carryforwards, Subject to Expiration		31,088,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		8,370,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards, Total		1,796,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 26,165	$ 16,064