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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Thousands
Nov. 30, 2021
May 31, 2021
Inventory Disclosure [Abstract]    
Raw materials $ 26,706 $ 22,925
Work in process 6,673 8,022
Finished goods 14,804 17,667
Inventories $ 48,183 $ 48,614