GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION

3 Months Ended

Mar. 31, 2013

Geographic and Customer Concentration Information [Abstract]

Geographic and Customer Concentration Information

GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION

We have one operating segment in which we design, manufacture and market advanced fabrication equipment for the semiconductor manufacturing industry. The authoritative guidance on segment reporting and disclosure defines operating segment as a component of an enterprise for which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. As our business is completely focused on one industry segment, the design, manufacture and marketing of advanced fabrication equipment to the semiconductor manufacturing industry, management believes that we have one reportable segment. Our net sales and profits are generated from the sales of systems and services in this one segment. For the purposes of evaluating our reportable segments, our Chief Executive Officer is the chief operating decision maker, as defined in the applicable authoritative guidance.

The following table summarizes net sales 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 31, 2013			April 1, 2012
	Amount		Percent	Amount		Percent
Net sales:
United States	$	3,084	15	$	10,170	20
South Korea	868		4	24,258		48
Taiwan	12,065		60	7,943		16
Other Asia	3,018		15	4,064		8
Europe and others	1,202		6	4,069		8
	$	20,237	100	$	50,504	100

For the three months ended March 31, 2013, two customers accounted for 10 percent or more of our total net sales. Sales to these customer represented approximately 47 percent and 11 percent of our total net sales, respectively. In the three months ended April 1, 2012, one customer accounted for 62 percent of our total net sales.

At March 31, 2013, two customers accounted for 10 percent or more of our total net accounts receivable, representing approximately 42 percent and 16 percent of our total net accounts receivable, respectively. At December 31, 2012, two customers accounted for 10 percent or more of our net accounts receivable, representing approximately 35 percent and 29 percent of our total net accounts receivable, respectively.

Geographical information relating to our property and equipment, net, as of March 31, 2013 and December 31, 2012 was as follows (in thousands):

	March 31, 2013		December 31, 2012
Property and equipment, net:
United States	$	3,501	$	3,824
Germany	2,920		3,131
Others	373		432
	$	6,794	$	7,387