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Consolidated Statements of Income (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Revenue:      
Product revenue $ 477,444 $ 418,550 $ 426,525
Contract revenue 9,957 17,694 38,975
Total revenue 487,401 436,244 465,500
Cost of revenue:      
Cost of product revenue(1) 262,224 234,102 240,930
Cost of revenue: 4,023 7,794 16,917
Total cost of revenue 266,247 241,896 257,847
Gross margin 221,154 194,348 207,653
Operating expenses:      
Research and development(1) 63,649 [1] 57,066 [1] 60,100 [1]
Selling and marketing(1) 71,529 [1] 66,412 [1] 50,477 [1]
General and administrative(1) 53,358 [1] 45,698 [1] 43,753 [1]
Total operating expenses 188,536 169,176 154,330
Operating income 32,618 25,172 53,323
Other income (expense), net (203) 435 218
Income before income taxes 32,415 25,607 53,541
Income tax expense 4,774 8,310 13,350
Net income 27,641 17,297 40,191
Net income per share      
Basic (Dollar per share) $ 0.97 $ 0.63 $ 1.50
Diluted (Dollars per share) $ 0.94 $ 0.61 $ 1.44
Number of shares used in per share calculations      
Basic (In shares) 28,495 27,577 26,712
Diluted (In shares) 29,354 28,301 27,924
Stock-based compensation recorded in fiscal 2012, 2011, and 2010 breaks down by expense classification as follows:      
Stock-based compensation 13,409 10,983 8,784
Cost of product revenue
     
Stock-based compensation recorded in fiscal 2012, 2011, and 2010 breaks down by expense classification as follows:      
Stock-based compensation 700 889 1,069
Research and development
     
Stock-based compensation recorded in fiscal 2012, 2011, and 2010 breaks down by expense classification as follows:      
Stock-based compensation 2,700 1,904 1,349
Selling and marketing
     
Stock-based compensation recorded in fiscal 2012, 2011, and 2010 breaks down by expense classification as follows:      
Stock-based compensation 1,246 808 724
General and administrative
     
Stock-based compensation recorded in fiscal 2012, 2011, and 2010 breaks down by expense classification as follows:      
Stock-based compensation $ 8,763 $ 7,382 $ 5,642
[1] Stock-based compensation recorded in fiscal 2013, 2012, and 2011 breaks down by expense classification as follows: Fiscal Year Ended December 28, 2013 December 29, 2012 December 31, 2011 (In thousands)Cost of product revenue$700 $889 $1,069Research and development2,700 1,904 1,349Selling and marketing1,246 808 724General and administrative8,763 7,382 5,642