Note 7 - Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Federal tax rate	(21.00%)	(21.00%)
State tax rate, net of Federal benefit	(6.50%)	(6.50%)
Change in valuation allowance	(12.00%)	50.20%
Permanent differences and other	32.60%	(22.70%)
Effective tax rate	6.90%	0.00%