Note 10 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current benefit:
Federal	$ 0
State	0
Deferred benefit:
Federal	186,103
State	5,575
Valuation allowance	0
Effective income tax (provision) benefit	$ 191,678	$ 0	$ 0