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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Net sales	$ 19,269	$ 18,858
Cost of sales	6,276	5,959
Gross profit	12,993	12,899
General and administrative	8,465	5,162
Marketing and selling	7,675	5,668
Research and development	6,906	3,579
Operating loss	(10,053)	(1,510)
Other income (expense):
Interest expense	(28)	(36)
Gain (loss) on foreign currency transactions	458	(892)
Royalty income	22	45
Other income (expense), net	(44)	25
Total other income (expense), net	408	(858)
Loss before income tax benefit	(9,645)	(2,368)
Income tax benefit	(1,604)	(28)
Net loss	$ (8,041)	$ (2,340)
Net loss per share - basic and diluted (in dollars per share)	$ (0.20)	$ (0.06)
Weighted average shares outstanding - basic and diluted (in shares)	39,983	38,481

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