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Inventories (Tables)
3 Months Ended
Aug. 31, 2018
Inventories

The components of inventories follow:

 

     August 31,
2018
     May 31,
2018
 
     (in thousands)  

Raw materials

   $ 36,008      $ 36,702  

Work-in-process

     6,661        5,993  

Finished and purchased goods

     36,102        33,310  
  

 

 

    

 

 

 
   $ 78,771      $ 76,005