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Inventories (Tables)
9 Months Ended
Feb. 28, 2018
Inventories

The components of inventories follow:

 

     February 28,
2018
     May 31,
2017
 
     (in thousands)  

Raw materials

   $ 35,774      $ 33,190  

Work-in-process

     6,231        4,831  

Finished and purchased goods

     35,501        35,123  
  

 

 

    

 

 

 
   $ 77,506      $ 73,144