4. PROPERTY AND EQUIPMENT, NET (Tables)

12 Months Ended

May 31, 2017

Property, Plant and Equipment [Abstract]

Property and equipment

Property and equipment, net comprise (in thousands):

	May 31,
	2017			2016
Leasehold improvements	$	1,145		$	1,072
Furniture and fixtures		974			974
Machinery and equipment		3,035			2,330
Test equipment		2,268			2,581
		7,422			6,957
Less: Accumulated depreciation and amortization		(6,003	)		(5,753	)
	$	1,419		$	1,204