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Share-based compensation - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2023
Jun. 24, 2022
Jun. 25, 2021
Jun. 26, 2020
Dec. 12, 2019
Nov. 02, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of ordinary shares available for grant (in shares) 2,058,285          
Shares authorized for future issuance (in shares)         1,281,619  
Shares withheld to settle employee minimum statutory obligation for applicable income and other employment taxes (in shares) 177,139 213,884        
Tax withholdings related to net share settlement of restricted share units $ 18,167 $ 20,824 $ 11,624      
Restricted Share Units and Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total fair value of restricted share units vested 28,400 $ 24,200 $ 22,100      
Aggregate intrinsic value of restricted share units outstanding $ 74,400          
Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 368,765 459,626 641,875 797,757    
Restricted Share Units | Non-employee Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 1 year          
Restricted Share Units | Vesting, option one            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 3 years          
Restricted Share Units | Vesting, option two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 4 years          
Restricted Share Units | Vest on the first of January | Non-employee Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 100.00%          
Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 204,016 285,882 427,028 440,140    
Performance Share Units | Executive of the Company            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award granted vesting period 2 years          
Performance Share Units | Vest at the end of the performance period | Executive of the Company | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 0.00%          
Performance Share Units | Vest at the end of the performance period | Executive of the Company | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting percentage 100.00%          
Equity Incentive Plans | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized share-based compensation expense $ 11,900          
Unrecognized compensation expense, weighted-average period for recognition 2 years 6 months          
Equity Incentive Plans | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized share-based compensation expense $ 6,600          
Unrecognized compensation expense, weighted-average period for recognition 1 year 1 month 6 days          
2020 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of ordinary shares available for grant (in shares) 1,946,938       1,700,000  
Shares reserved for future issuance (in shares)         1,300,000  
2020 Plan | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 341,706          
2020 Plan | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 204,016          
2010 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of ordinary shares available for grant (in shares) 0          
2010 Plan | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 27,059          
2010 Plan | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 0          
2017 Inducement Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares authorized for future issuance (in shares)           160,000
Share units outstanding (in shares) 111,347          
2017 Inducement Plan | Restricted Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 0          
2017 Inducement Plan | Performance Share Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share units outstanding (in shares) 0