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6. INVENTORIES (Details) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
May 31, 2014
Inventory, Net [Abstract]    
Raw materials and sub-assemblies $ 3,504 $ 3,348
Work-in-process 2,558 2,585
Finished goods 242 215
Inventory $ 6,304 $ 6,148 [1]
[1] The condensed consolidated balance sheet at May 31, 2014 has been derived from the audited consolidated financial statements at that date.