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Stockholders' Equity - Summary of Company's Equity Award Activity - RSUs (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2014
Sep. 27, 2014
Restricted Stock Units [Member]
   
Number of Restricted Stock Units    
Number of Restricted/Performance Stock Units, beginning balance (in shares)   6,583
Number of Restricted Stock Units, granted (in shares)   2,415
Number of Restricted Stock Units, released (in shares)   (2,625)
Number of Restricted Stock Units, canceled (in shares)   (424)
Number of Restricted/Performance Stock Units, ending balance (in shares) 5,949 5,949
Number of Restricted Stock Units, Expected to vest (in shares) 5,751 5,751
Weighted- Average Grant Date Fair Value Per Share    
Weighted-Average Grant Date Fair Value Per Share, beginning balance (in usd per share)   $ 7.72
Weighted-Average Grant Date Fair Value Per Share, granted (in usd per share)   $ 8.37
Weighted-Average Grant Date Fair Value Per Share, released (in usd per share)   $ 7.74
Weighted-Average Grant Date Fair Value Per Share, canceled (in usd per share)   $ 7.88
Aggregate Intrinsic Value    
Aggregate Intrinsic Value, beginning balance   $ 64,443
Aggregate Intrinsic Value, RSUs released   22,477
Aggregate Intrinsic Value, ending balance 63,122 63,122
Aggregate Intrinsic Value, Expected to vest $ 61,021 $ 61,021
Fiscal Year 2013 Grant [Member]
   
Number of Restricted Stock Units    
Number of Restricted Stock Units, released (in shares) 0 (300)