Note 5 - Operating Segments - Reconciliation of Segment Revenues, Income Before Income Taxes, and Assets (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Revenues	$ 19,268,549	$ 22,292,403	$ 48,909,795	$ 53,704,649
Reportable Legal Entities [Member]
Revenues			49,997,000	54,640,000
Intersegment Eliminations [Member]
Revenues			$ 1,087,000	$ 935,000	$ 935,000