(3) Net Income Per Common and Common Equivalent Share (EPS) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
Basic EPS Computation:
Net income (loss)	$ 13,228	$ (138,786)	$ (924,389)	$ (200,395)
Weighted average Common shares Outstanding	13,203,436	13,203,436	13,203,436	13,200,584
Basic EPS	$ 0.00	$ (0.01)	$ (0.07)	$ (0.02)
Diluted EPS Computation:
Net income (loss)	$ 13,228	$ (138,786)	$ (924,389)	$ (200,395)
Weighted average Common shares Outstanding	13,203,436	13,203,436	13,203,436	13,200,584
Dilutive effect of stock options	$ 26,432
Total Shares	13,229,868	13,203,436	13,203,436	13,200,584
Diluted EPS	$ 0.00	$ (0.01)	$ (0.07)	$ (0.02)