Note 5 - Net Income Per Common and Common Equivalent Share - Table of Both Basic and Diluted EPS (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Basic EPS Computation:
Net loss	$ (1,042,839)	$ 171,081	$ (2,140,297)	$ 1,230,785
Outstanding (in shares)	14,525,664	14,517,364	14,521,365	14,487,873
Basic EPS (in dollars per share)	$ (0.07)	$ 0.01	$ (0.15)	$ 0.08
Diluted EPS Computation:
Net loss	$ (1,042,839)	$ 171,081	$ (2,140,297)	$ 1,230,785
Outstanding (in shares)	14,525,664	14,517,364	14,521,365	14,487,873
Dilutive effect of stock options (in shares)		118,877		144,718
Total Shares (in shares)	14,525,664	14,636,241	14,521,365	14,632,591
Diluted EPS (in dollars per share)	$ (0.07)	$ 0.01	$ (0.15)	$ 0.08