Condensed Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014
Income Statement [Abstract]
Net sales	$ 3,671	$ 3,292	$ 10,438	$ 10,647
Cost of sales	2,796	2,451	7,741	7,555
Gross profit	875	841	2,697	3,092
Operating expenses:
Selling and warehouse	386	306	1,136	1,117
Marketing	74	128	277	402
Research and development	106	152	389	488
General and administrative	435	419	1,413	1,327
Total operating expenses	1,001	1,005	3,215	3,334
Loss before income taxes	(126)	(164)	(518)	(242)
Income tax expense			8	6
Net loss	$ (126)	$ (164)	$ (526)	$ (248)
Weighted average common shares outstanding:
Basic and diluted (in shares)	5,154	5,154	5,154	5,154
Net loss per common share:
Basic and diluted (in dollars per share)	$ (0.02)	$ (0.03)	$ (0.1)	$ (0.05)