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Business Segment Reporting - Sales by Geographic Area (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 27, 2022
Nov. 28, 2021
Nov. 27, 2022
Nov. 28, 2021
Segment Reporting Information [Line Items]        
Product sales $ 38,802 $ 43,452 $ 82,157 $ 85,084
Switzerland        
Segment Reporting Information [Line Items]        
Product sales 4,000 2,000 8,000 5,400
Canada        
Segment Reporting Information [Line Items]        
Product sales 2,600 2,900 6,200 6,400
Czech Republic        
Segment Reporting Information [Line Items]        
Product sales 1,000 800 1,700 1,700
Ireland        
Segment Reporting Information [Line Items]        
Product sales 1,000 700 1,700 800
All Other Countries        
Segment Reporting Information [Line Items]        
Product sales $ 500 $ 900 $ 1,000 $ 1,700