Note 6 - Net Loss Per Share - Earnings Per Share Reconciliation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Numerator for basic and diluted income (loss) per share, net income (loss) available to common shareholders	$ (1,940,345)	$ 218,483	$ (3,562,615)	$ (501,769)
Denominator:
Denominator for basic income (loss) per share, weighted average shares outstanding (in shares)	20,316,572	19,993,387	20,298,573	19,962,661
Effect of dilutive securities (in shares)	0	4,969,002	0	0
Denominator for diluted earnings per share, adjust weighted average shares and assumed conversion (in shares)	20,316,572	24,962,389	20,298,573	19,962,661
Basic income (loss) per common share (in dollars per share)	$ (0.10)	$ 0.01	$ (0.18)	$ (0.03)
Diluted income (loss) per common share and common share equivalent (in dollars per share)	$ (0.10)	$ 0.01	$ (0.18)	$ (0.03)