Note 11 - Net Income (Loss) Per Share - Earnings Per Share Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Numerator for basic and diluted earnings per share, net income (loss) available to common shareholders	$ 3,305,497	$ (475,104)
Denominator:
Denominator for basic net income (loss) per share, weighted average shares outstanding (in shares)	26,852,129	26,490,868
Effect of dilutive securities-stock options and warrants (in shares)	0	0
Denominator for diluted net income (loss) per share, adjusted weighted average shares and assumed conversion (in shares)	26,852,129	26,490,868
Basic net income (loss) per common share (in dollars per share)	$ 0.12	$ (0.02)
Diluted net income (loss) per common share and common share equivalents (in dollars per share)	$ 0.12	$ (0.02)