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Stock-based compensation - Summary of Stock-based Compensation (Details) - USD ($)
$ in Thousands
9 Months Ended
Feb. 23, 2025
Feb. 25, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 8,343 $ 4,603
Cost of product sales    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense 431 549
Research and development expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense (123) 126
Selling, general and administrative expense    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock-based compensation expense $ 8,035 $ 3,928