Note 10 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Applicable Tax Rate Used to Determine State Margin Tax	0.75%		0.75%
Margin Tax Provision Recognized	$ 117,000	$ 95,000	$ 348,000	$ 339,000