v3.19.2
Net (Loss) Income per Share Attributable to Common Stockholders - Antidilutive Securities (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 30, 2018
Jun. 29, 2019
Jun. 30, 2018
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (shares) 3,189 4,002 3,189 846
Restricted stock units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (shares) 2,412 2,514 2,412 684
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) 5,183 4,915 5,183 4,915