Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member]		2 Months Ended
	Aug. 13, 2024 $ / shares shares	Aug. 13, 2024 $ / shares shares
Vendors [Member]
Stock Issued During Period, Shares, Issued in Exchange for Reduction in Payables (in shares)		28,846
2024 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	2,100,295	2,100,295
Share-Based Payment Arrangement, Option [Member]
Stock Issued During Period, Shares, New Issues (in shares)		350,000
Share-Based Payment Arrangement, Option [Member] | Chief Financial Officer [Member]
Engagement Extension, Term (Year)	1 year
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross, Per Month (in shares)	25,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 0.24	$ 0.24
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Available Grants in Period, Gross, Upon Renewal (in shares)	300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vesting Period for Renewable Options (Year)	1 year