Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Total revenues	$ 10,589	$ 9,210	$ 20,918	$ 18,149
Cost of revenues	5,289	4,728	10,563	9,436
Gross profit	5,300	4,482	10,355	8,713
Operating expenses:
Research and development	1,306	884	2,500	1,880
Sales and marketing	2,056	1,846	3,804	3,471
General and administrative	1,538	1,237	3,054	2,423
Proceeds from demutualization of insurance carrier				(473)
Total operating expenses	4,900	3,967	9,358	7,301
Income from operations	400	515	997	1,412
Other expense, net	91	97	188	115
Income from operations before provision for income taxes	309	418	809	1,297
Provision for income taxes	12	3	25	8
Net income	$ 297	$ 415	$ 784	$ 1,289
Net income per share:
Basic	$ 0.03	$ 0.05	$ 0.08	$ 0.15
Diluted	$ 0.03	$ 0.04	$ 0.07	$ 0.13
Weighted average shares used in computing net income per common share
Basic	9,922	8,824	9,943	8,668
Diluted	10,411	10,005	10,469	9,903