7. INVENTORIES (Tables)

9 Months Ended

Feb. 28, 2018

Inventory Disclosure [Abstract]

Inventories

    Inventories are comprised of the following (in thousands):

	February 28,		May 31,
	2018		2017
Raw materials and sub-assemblies	$	5,616	$	4,268
Work in process		3,518		2,059
Finished goods		234		277
	$	9,368	$	6,604