Note 3 - Net Income (Loss) Per Common and Common Equivalent Share - Table of Both Basic and Diluted EPS (Details) - USD ($)	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Basic EPS Computation:
Net loss	$ (143,153)	$ 459,201
Basic EPS (in dollars per share)	$ (0.01)	$ 0.03
Diluted EPS Computation:
Net loss	$ (143,153)	$ 459,201
Dilutive effect of stock options (in shares)	0	187,316
Total Shares (in shares)	14,519,215	14,639,600
Diluted EPS (in dollars per share)	$ (0.01)	$ 0.03