Note 4 - Valuation Accounts - Summary of Valuation and Allowance Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Balance, Beginning of Year	$ 826,528
Net Write-off	897,116	$ 826,528
Balance, End of Year	897,116	826,528
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance, Beginning of Year	319,000	319,000
Net Charged to Costs and Expenses	34,310	0
Transfers	0	0
Net Write-off	(29,310)	0
Balance, End of Year	324,000	319,000
SEC Schedule, 12-09, Reserve, Legal [Member]
Balance, Beginning of Year	826,528	755,494
Net Charged to Costs and Expenses	70,588	71,034
Transfers	0	0
Net Write-off	0	0
Balance, End of Year	$ 897,116	$ 826,528