Note 16 - Related Party Transactions (Details Textual) - USD ($)	12 Months Ended		27 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2018
Common Stock, Shares, Issued (in shares)	8,481,848	8,403,869
C.E. Rick Strattan [Member]
Payments for Non-profit Organization, Monthly Fee			$ 5,000
Joshua M. Fine [Member]
Annual Salary for Chief Financial Officer	$ 335,780	$ 275,333
Chief Financial Officer, Cash Bonus	$ 134,312	$ 75,000
Common Stock, Shares, Issued (in shares)	76,752	134,288
Rebecca A. Fine [Member]
Annual Salary for Executive Assistant	$ 107,700	$ 90,000
Executive Assistant, Cash Bonus	$ 16,155	$ 15,000
Kevin J. Strattan [Member]
Common Stock, Shares, Issued (in shares)	41,509	72,787
Annual Salary for Vice President, Finance	$ 180,250	$ 149,800
Bonus for Vice President, Finance	$ 54,075	30,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Corey E. Strattan [Member]
Annual Salary for Documentation Specialist and Logistics Coordinator	$ 92,700	90,000
Bonus for Documentation Specialist and Logistics Coordinator	$ 13,905	$ 15,000