Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 03, 2015	Sep. 27, 2014
Statement Of Cash Flows [Abstract]
Cash used in operating activities, net	$ (200)	$ (150)
Cash used in financing activities, net	(5)
Net decrease in cash and cash equivalents	(205)	(150)
Cash and cash equivalents at beginning of period	341	214
Cash and cash equivalents at end of period	136	64
Supplemental cash flow information:
Income taxes paid	$ 8	$ 6