Note 3 - Summary of Significant Accounting Policies (10-Q) (Details Textual)	3 Months Ended	12 Months Ended
Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Mar. 31, 2023 USD ($)
Deferred Offering Costs	$ 247,671	$ 0	$ 638,018
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%
Number of Operating Segments	1
Convertible Debt [Member] \| Measurement Input, Expected Term [Member]
Debt Instrument, Measurement Input	0.69	0.94
Convertible Debt [Member] \| Measurement Input, Price Volatility [Member]
Debt Instrument, Measurement Input	0.75	0.80
Convertible Debt [Member] \| Measurement Input, Cost to Sell [Member]
Debt Instrument, Measurement Input	0.553	0.552
Private Placement [Member]
Deferred Offering Costs	$ 200,000

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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