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Equity Incentive Plans and ESPP - Additional Information (Details) - shares
9 Months Ended
Sep. 01, 2020
Mar. 03, 2020
Sep. 30, 2020
Share Capital [Line Items]      
Options exercised (in shares)     1,260,709
ESPP      
Share Capital [Line Items]      
Ordinary shares available for grants (in shares)     4,017,014
Shares issued under plan (in shares)     447,634
RSUs      
Share Capital [Line Items]      
Stock awards granted, vesting period (years) 3 years 3 years  
PSUs | Minimum      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     3 years
PSUs | Maximum      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     6 years
2015 Plan      
Share Capital [Line Items]      
Ordinary shares available for grants (in shares)     11,263,270
2015 Plan | Option      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     4 years
Stock awards granted, expiration period (years)     10 years
2015 Plan | RSUs      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     3 years
2015 Plan | PSUs | Minimum      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     3 years
2015 Plan | PSUs | Maximum      
Share Capital [Line Items]      
Stock awards granted, vesting period (years)     6 years