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Debt - Summary of Conversion of 2016 Notes (Details) - Convertible Senior Notes [Member] - 2016 Notes [Member]
shares in Thousands, $ in Thousands
9 Months Ended
Oct. 02, 2016
USD ($)
shares
Extinguishment of Debt [Line Items]  
Cash paid for principal of notes converted $ 75,543
Conversion value over principal amount paid in shares of common stock $ 63,753
Number of shares of common stock issued upon conversion | shares 409