6. INVENTORIES (Details) - USD ($) $ in Thousands	Aug. 31, 2016	May 31, 2016
Inventory, Net [Abstract]
Raw materials and sub-assemblies	$ 2,802	$ 2,839
Work-in-process	2,970	4,151
Finished goods	259	43
Inventory	$ 6,031	$ 7,033	[1]

[1] The condensed consolidated balance sheet at May 31, 2016 has been derived from the audited consolidated financial statements at that date.