12. SEGMENT INFORMATION (Tables)

3 Months Ended

Aug. 31, 2018

Segment Reporting [Abstract]

Company's operations in different geographic areas

    The following presents information about the Company’s operations in different geographic areas. Net sales are based upon ship-to location (in thousands).

	United
	States		Asia		Europe		Total
Three months ended August 31, 2018:
Net sales	$	2,695	$	1,734	$	311	$	4,740
Property and equipment, net		1,130		39		5		1,174
Three months ended August 31, 2017:
Net sales	$	1,290	$	5,660	$	20	$	6,970
Property and equipment, net		1,089		39		12		1,140

Disaggregation of revenue

    Our revenues by product category are as follows (in thousands):

	Three Months Ended
	August 31,
	2018		2017
Type of good / service:
Systems	$	1,806	$	3,476
Contactors		1,153		2,677
Services		1,781		817
	$	4,740	$	6,970
Timing of revenue recognition:
Products and services transferred at a point in time	$	4,118	$	6,500
Services transferred over time		622		470
	$	4,740	$	6,970