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Stock-Based Compensation -Schedule of Employee Stock Purchase Plan (Details) - ESPP
3 Months Ended 9 Months Ended
Oct. 02, 2016
Sep. 27, 2015
Oct. 02, 2016
Sep. 27, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term (months) 6 months 2 days 6 months 2 days 6 months 2 days 6 months 2 days
Risk-free interest rate 0.40% 0.08% 0.40% 0.08%
Volatility 54.31% 51.54% 54.31% 51.54%
Dividend yield 0.00% 0.00% 0.00% 0.00%