Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Jan. 02, 2016	Dec. 27, 2014	Dec. 28, 2013
Revenue		$ 616,778	$ 556,846	$ 487,401
Cost of revenue(1)		327,852	298,791	266,247
Gross margin		288,926	258,055	221,154
Operating expenses:
Research and development(1)	[1]	76,071	69,408	63,649
Selling and marketing(1)	[1]	97,772	86,091	71,529
General and administrative(1)	[1]	54,465	49,439	53,358
Total operating expenses		228,308	204,938	188,536
Operating income		60,618	53,117	32,618
Other income (expense), net		2,353	(708)	(203)
Income before income taxes		62,971	52,409	32,415
Income tax expense		18,841	14,606	4,774
Net income		$ 44,130	$ 37,803	$ 27,641
Net income per share
Basic (Dollar per share)		$ 1.49	$ 1.28	$ 0.97
Diluted (Dollars per share)		$ 1.47	$ 1.25	$ 0.94
Number of weighted average common shares used in calculations per share
Basic (In shares)		29,550	29,485	28,495
Diluted (In shares)		30,107	30,210	29,354
Stock-based compensation recorded breaks down by expense classification as follows:
Stock-based compensation		$ 14,183	$ 13,778	$ 13,409
Cost of revenue
Stock-based compensation recorded breaks down by expense classification as follows:
Stock-based compensation		1,076	865	700
Research and development
Stock-based compensation recorded breaks down by expense classification as follows:
Stock-based compensation		3,256	3,359	2,700
Selling and marketing
Stock-based compensation recorded breaks down by expense classification as follows:
Stock-based compensation		1,457	1,296	1,246
General and administrative
Stock-based compensation recorded breaks down by expense classification as follows:
Stock-based compensation		$ 8,394	$ 8,258	$ 8,763

[1] Stock-based compensation recorded in fiscal 2015, 2014 and 2013 breaks down by expense classification as follows: Fiscal Year Ended January 2, 2016 December 27, 2014 December 28, 2013 (In thousands)Cost of revenue$1,076 $865 $700Research and development3,256 3,359 2,700Selling and marketing1,457 1,296 1,246General and administrative8,394 8,258 8,763