Statements of Operations - USD ($)	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019
Income Statement [Abstract]
Product sales	$ 20,872,611	$ 21,468,414
Cost of product sales	16,702,848	18,928,173
Gross margin	4,169,763	2,540,241
Selling, general, and administrative expenses	3,255,527	3,137,440
Income (loss) from operations	914,236	(597,199)
Other income (expense)	(14,720)	(35,547)
Income (loss) before income tax	899,516	(632,746)
Income tax provision (benefit)	(8,548)	5,456
Net income (loss)	$ 908,064	$ (638,202)
Net income (loss) per basic common share	$ 0.07	$ (0.05)
Weighted average number of basic common shares outstanding	13,251,521	13,207,097
Net income (loss) per diluted common share	$ 0.07	$ (0.05)
Weighted average number of diluted common shares outstanding	13,348,582	13,207,097