Note 2 - Liquidity and Capital Resources (Details Textual) - USD ($)		1 Months Ended		9 Months Ended
	Aug. 16, 2023	Jul. 31, 2023	Jan. 31, 2023	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Retained Earnings (Accumulated Deficit)				$ (52,078,391)		$ (54,228,753)	$ (52,803,252)	$ (52,268,916)
Government Assistance, Amount, Cumulative			$ 21,000,000.0
Government Assistance, Transaction Duration			3 years
Proceeds from Issuance of Common Stock		$ 800,000		$ 810,000	$ 0
Merger Agreement [Member]
Cash Acquired from Acquisition	$ 12,700,000