XML 19 R9.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories
6 Months Ended
Nov. 30, 2017
Inventories

2. INVENTORIES

Inventories are stated at the lower of cost, determined on the first-in, first-out method, or net realizable value. The components of inventories follow:

 

     November 30,
2017
     May 31,
2017
 
     (in thousands)  

Raw materials

   $ 35,909      $ 33,190  

Work-in-process

     4,955        4,831  

Finished and purchased goods

     32,849        35,123  
  

 

 

    

 

 

 
   $ 73,713      $ 73,144