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6. INVENTORIES
3 Months Ended
Aug. 31, 2014
Inventory Disclosure [Abstract]  
6. INVENTORIES

6.  INVENTORIES

 

Inventories are comprised of the following (in thousands):

 

    August 31,     May 31,  
    2014     2014  
Raw materials and sub-assemblies   $ 3,504     $ 3,348  
Work in process     2,558       2,585  
Finished goods     242       215  
    $ 6,304     $ 6,148