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Income (Loss) Per Share - Anti-dilutive Securities (Detail) - $ / shares
3 Months Ended
Apr. 01, 2016
Apr. 03, 2015
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Potentially dilutive equity awards outstanding 7,379,000 9,641,000  
Potential Common Shares Upon Notes Conversion If Only Settled In Shares 22,304,348    
Debt Instrument, Convertible, Conversion Price $ 5.75   $ 5.75
Stock Options [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Potentially dilutive equity awards outstanding 5,548,000 7,088,000  
Restricted Stock Units (RSUs)      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Potentially dilutive equity awards outstanding 1,772,000 2,049,000  
Employee Stock Purchase Plan      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Potentially dilutive equity awards outstanding 59,000 504,000