Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Income Statement [Abstract]
Total revenues	$ 9,033	$ 10,589	$ 19,829	$ 20,918
Cost of revenues	4,816	5,289	10,202	10,563
Gross profit	4,217	5,300	9,627	10,355
Operating expenses:
Research and development	1,482	1,306	2,763	2,500
Sales and marketing	2,158	2,056	4,229	3,804
General and administrative	1,324	1,538	2,979	3,054
Total operating expenses	4,964	4,900	9,971	9,358
(Loss) income from operations	(747)	400	(344)	997
Other expense, net	23	91	30	188
(Loss) income from operations before (benefit from) provision for income taxes	(770)	309	(374)	809
(Benefit from) provision for income taxes	(118)	12	32	25
Net (loss) income	$ (652)	$ 297	$ (406)	$ 784
Net (loss) income per share:
Basic	$ (0.07)	$ 0.03	$ (0.04)	$ 0.08
Diluted	$ (0.07)	$ 0.03	$ (0.04)	$ 0.07
Weighted average shares used in computing net (loss) income per common share:
Basic	10,027	9,922	9,948	9,943
Diluted	10,027	10,411	9,948	10,469