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Inventories (Tables)
6 Months Ended
Nov. 30, 2021
Inventories
Inventories are stated at the lower of cost, determined by the
first-in,
first-out
method, or net realizable value. The components of inventories follow:
 
    
November 30,
    
May 31,
 
(in thousands)
  
2021
    
2021
 
Raw materials
   $ 53,940      $ 47,588  
Work-in-process
     6,303        6,412  
Finished and purchased goods
     46,843        46,701  
    
 
 
    
 
 
 
     $ 107,086      $ 100,701