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Stock-Based Compensation -Schedule of Employee Stock Purchase Plan (Details) - ESPP
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expected term (months) 6 months 6 months 2 days 6 months 6 months 2 days
Risk-free interest rate 1.02% 0.40% 1.02% 1.04%
Volatility 49.71% 54.31% 49.71% 61.06%
Dividend yield 0.00% 0.00% 0.00% 0.00%