4. PROPERTY AND EQUIPMENT, NET

12 Months Ended

May 31, 2016

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT, NET

4. PROPERTY AND EQUIPMENT, NET:

    Property and equipment, net comprise (in thousands):

	May 31,
	2016			2015
Leasehold improvements	$	1,072		$	1,093
Furniture and fixtures		974			1,062
Machinery and equipment		2,330			3,802
Test equipment		2,581			2,967
		6,957			8,924
Less: Accumulated depreciation and amortization		(5,753	)		(8,446	)
	$	1,204		$	478

    Depreciation expense was $203,000, $135,000 and $141,000 for fiscal 2016, 2015, and 2014, respectively.