CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2015	Jul. 04, 2014	Jul. 03, 2015	Jul. 04, 2014
Net sales	$ 18,657	$ 20,048	$ 37,514	$ 40,226
Cost of sales	6,296	6,381	12,254	12,675
Gross profit	12,361	13,667	25,260	27,551
General and administrative	4,736	5,368	9,896	10,804
Marketing and selling	5,832	7,026	11,500	13,164
Research and development	3,536	2,498	7,116	5,981
Other general and administrative expenses	0	165	0	334
Operating loss	(1,743)	(1,390)	(3,252)	(2,732)
Other income (expense):
Interest income	49	10	49	18
Interest expense	(33)	(34)	(68)	(67)
Gain (loss) on foreign currency transactions	180	(134)	(711)	(68)
Other income, net	101	126	170	287
Other income (expense), net	297	(32)	(560)	170
Loss before provision for income taxes	(1,446)	(1,422)	(3,812)	(2,562)
Provision for income taxes	153	367	126	586
Net loss	$ (1,599)	$ (1,789)	$ (3,938)	$ (3,148)
Net loss per share - basic and diluted (in dollars per share)	$ (0.04)	$ (0.05)	$ (0.10)	$ (0.08)
Weighted average shares outstanding - basic and diluted (in shares)	39,066	38,168	38,769	37,970