(3) Net Income Per Common and Common Equivalent Share - Table presents the calculation of both basic and diluted EPS: (Details) - USD ($)	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020
Basic EPS Computation:
Net income	$ 30,903	$ 601,654
Weighted average Common shares Outstanding	13,584,376	13,207,436
Basic EPS	$ 0.00	$ 0.05
Diluted EPS Computation:
Net income (loss)	$ 30,903	$ 601,654
Weighted average Common shares Outstanding	13,584,376	13,207,436
Dilutive effect of stock options	$ 680,514	$ 39,395
Total Shares	14,264,890	13,247,131
Diluted EPS	$ 0.00	$ 0.05