Note 10 - Income Taxes - Components of Income Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Current provision:
Federal	$ 0	$ (94,948)
State	279,861	118,057
Current Income Tax Expense (Benefit), Total	279,861	23,109
Deferred provision:
Federal expense (benefit)	(110,000)	0
Expense for income taxes	$ 169,861	$ 23,109