GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION (Tables)

3 Months Ended

Mar. 27, 2016

Geographic and Customer Concentration Information [Abstract]

Summary of Net Revenue by Geographic Area

The following table summarizes net revenue by geographic areas based on the installation locations of the systems and the location of services rendered (in thousands, except percentages):

	Three Months Ended
	March 27, 2016			March 29, 2015
	Amount		Percent	Amount		Percent
Net revenue:
United States	$	3,247	11	$	8,568	15
China	11,395		40	3,599		6
South Korea	6,430		22	33,998		58
Taiwan	2,509		9	5,520		10
Other Asia	4,137		15	5,365		9
Europe and others	971		3	1,204		2
	$	28,689	100	$	58,254	100

Summary of Geographic Information Relating to Property and Equipment

Geographical information relating to our property and equipment, net, as of March 27, 2016 and December 31, 2015 was as follows (in thousands):

	March 27, 2016		December 31, 2015
Property and equipment, net:
United States	$	3,120	$	3,350
Germany	5,720		4,712
Others	162		174
	$	9,002	$	8,236