Note 10 - Operating Segments - Reconciliation of Segment Revenues, Income Before Income Taxes, and Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 61,562,288	$ 61,436,858
Reportable Legal Entities [Member]
Revenues	63,168,000	62,853,000
Intersegment Eliminations [Member]
Revenues	$ 1,606,000	$ 1,416,000