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Stock-based Compensation and Stockholders’ Equity - Summary of Stock-based Compensation by Income Statement Line Item (Details) - USD ($)
$ in Thousands
12 Months Ended
May 30, 2021
May 31, 2020
May 26, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation $ 3,360 $ 2,419 $ 3,560
Cost of sales      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation 403 162 449
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation 223 158 114
Selling, general and administrative      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total stock-based compensation $ 2,734 $ 2,099 $ 2,997