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Share Option Plan and ESPP - Additional Information (Details) - shares
3 Months Ended
Mar. 03, 2020
Mar. 31, 2020
Share Capital [Line Items]    
Options exercised (in shares)   291,088
Ordinary shares issued upon option exercise (in shares)   291,088
ESPP    
Share Capital [Line Items]    
Ordinary shares available for grants (in shares)   4,050,089
Shares issued under plan (in shares)   414,559
RSUs    
Share Capital [Line Items]    
Stock awards granted, vesting period (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)   11,430,386
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