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Basis of Presentation (Tables)
9 Months Ended
Feb. 28, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Inventory Inventory is comprised of the following: 
(In thousands)February 28, 2021May 31,
2020
Raw materials$15,757 $18,661 
Work in process32,290 29,497 
Finished goods485,164 360,740 
 $533,211 $408,898