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Note 4 - Inventories
3 Months Ended
Aug. 31, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

4.

INVENTORIES


Inventories are stated at the lower of cost (first-in, first-out basis) or market (net realizable value). Inventories as of August 31, 2014, and May 31, 2014 include the following (in thousands):


   

As of

 
   

August 31, 2014

   

May 31, 2014

 
                 

Raw materials and supplies

  $ 10,908       12,110  

Work in process

    9,574       9,146  

Finished goods

    28,404       27,895  
    $ 48,886       49,151