Note 2 - Liquidity (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	$ 4,965,000	$ 5,990,000
Certificates of Deposit, at Carrying Value	500,000	500,000
Working Capital	3,997,000
Net Income (Loss) Attributable to Parent	(4,043,000)	(4,384,000)
Net Cash Provided by (Used in) Operating Activities	(3,406,200)	(2,993,000)
Net Cash Provided by (Used in) Investing Activities	0	0
Proceeds from Issuance of Private Placement		5,364,000
Proceeds from Warrant Exercises		534,000
Preferred Warrants [Member]
Proceeds From Warrant Exercises, Net	1,478,000	5,364,000
Proceeds from Warrant Exercises	1,607,000
Common Stock Warrants [Member]
Proceeds From Warrant Exercises, Net	$ 903,000	$ 534,000