v3.7.0.1
Net Income (Loss) per Share Attributable to Common Stockholders - Antidilutive Securities (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2017
Jun. 25, 2016
Jul. 01, 2017
Jun. 25, 2016
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (shares) 1,398 4,452 1,292 617
Restricted stock units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (shares) 24 2,064 14 1,217
Series A Redeemable Convertible Preferred Stock (as converted to common stock)        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (shares) 4,659 0 4,659 0