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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Components of Inventories (Details) - USD ($)
$ in Thousands
Aug. 30, 2020
May 31, 2020
Accounting Policies [Abstract]    
Finished goods $ 27,635 $ 35,177
Raw materials 25,794 25,856
Work in progress 6,569 5,278
Total $ 59,998 $ 66,311