Note 4 - Valuation Accounts - Summary of Valuation and Allowance Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance, Beginning of Year	$ 755,494
Net Write-off	826,528	$ 755,494
Balance, End of Year	826,528	755,494
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance, Beginning of Year	319,000	319,000
Net Charged to Costs and Expenses	0	0
Transfers	0	0
Net Write-off	0	0
Balance, End of Year	319,000	319,000
SEC Schedule, 12-09, Reserve, Legal [Member]
Balance, Beginning of Year	755,494	623,494
Net Charged to Costs and Expenses	71,034	132,000
Transfers	0	0
Net Write-off	0	0
Balance, End of Year	$ 826,528	$ 755,494