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Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Revenue		$ 148,696	$ 148,788	$ 279,500	$ 266,749
Cost of revenue (1)	[1]	79,044	78,755	147,887	143,008
Gross margin		69,652	70,033	131,613	123,741
Operating expenses:
Research and development (1)	[1]	18,544	18,732	38,272	37,764
Selling and marketing (1)	[1]	29,107	27,329	49,047	41,517
General and administrative (1)	[1]	16,143	12,905	32,907	25,494
Total operating expenses		63,794	58,966	120,226	104,775
Operating income		5,858	11,067	11,387	18,966
Other income (expense), net		1,419	(61)	1,619	(855)
Income before income taxes		7,277	11,006	13,006	18,111
Income tax expense		2,463	3,754	4,260	6,105
Net income		$ 4,814	$ 7,252	$ 8,746	$ 12,006
Net income per share
Basic		$ 0.18	$ 0.24	$ 0.31	$ 0.40
Diluted		$ 0.17	$ 0.24	$ 0.30	$ 0.40
Number of weighted average common shares used in calculations per share
Basic		27,360	29,785	28,198	29,719
Diluted		27,836	30,268	28,717	30,283
Stock-based compensation				$ 7,878	$ 6,562
Cost of revenue
Number of weighted average common shares used in calculations per share
Stock-based compensation		$ 150	$ 177	371	392
Research and development
Number of weighted average common shares used in calculations per share
Stock-based compensation		741	942	1,570	1,774
Selling and marketing
Number of weighted average common shares used in calculations per share
Stock-based compensation		387	306	872	615
General and administrative
Number of weighted average common shares used in calculations per share
Stock-based compensation		$ 2,708	$ 2,030	$ 5,065	$ 3,781
[1] Total stock-based compensation recorded in the three and six months ended July 2, 2016 and June 27, 2015 included in the above figures breaks down by expense classification as follows: Three Months Ended Six Months Ended July 2, 2016 June 27, 2015 July 2, 2016 June 27, 2015Cost of revenue$150 $177 $371 392Research and development741 942 1,570 1,774Selling and marketing387 306 872 615General and administrative2,708 2,030 5,065 3,781

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