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Stock-Based Compensation - RSU Activity (Details) - RSUs
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 30, 2018
USD ($)
$ / shares
shares
Shares  
RSUs outstanding at beginning of period (in shares) | shares 3,762,990
Awarded (in shares) | shares 146,790
Vested and released (in shares) | shares (197,884)
Forfeited (in shares) | shares (24,494)
RSUs outstanding at end of period (in shares) | shares 3,687,402
Weighted Average Grant Date Fair Value Per Share  
RSUs outstanding at beginning of period (in dollars per share) | $ / shares $ 17.76
Awarded (in dollars per share) | $ / shares 25.72
Vested and released (in dollars per share) | $ / shares 6.30
Forfeited (in dollars per share) | $ / shares 17.89
RSUs outstanding at end of period (in dollars per share) | $ / shares $ 18.69
Weighted Average Remaining Contractual Term  
RSUs outstanding at end of period 1 year 9 months 29 days
Aggregate Intrinsic Value  
RSUs outstanding at end of period | $ $ 81,676