GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION

12 Months Ended

Dec. 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 an 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):

	For the Years Ended December 31,
	2013			2012			2011
	Amount		Percent	Amount		Percent	Amount		Percent
Net revenues:
United States	$	12,350	10	$	17,476	14	$	10,311	6
Korea	22,173		19	47,611		38	84,623		46
Taiwan	50,782		43	28,577		23	37,507		20
China	20,250		17	8,562		7	12,110		7
Other Asia	8,740		7	13,615		10	21,002		11
Europe and others	5,139		4	10,685		8	19,394		10
	$	119,434	100	$	126,526	100	$	184,947	100

In 2013, two customers accounted for 10 percent or more of our total net revenues. Sales to these customers represented approximately 35 percent and 33 percent of our total net revenues, respectively. In 2012, two customers accounted for 10 percent or more of our total net revenues. Sales to these customers represented 41 percent and 12 percent of our total net revenues, respectively. In 2011, two customers accounted for 10 percent or more of our total net revenues. Sales to these customers represented approximately 42 percent and 10 percent of our total net revenues, respectively.

As of December 31, 2013, two customers accounted for 10 percent or more of our total net accounts receivable, representing approximately 61 percent and 23 percent of our total net accounts receivable, respectively. As of 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 December 31, 2013 and December 31, 2012 was as follows (in thousands):

	December 31,
	2013		2012
Property and equipment, net:
United States	$	4,949	$	3,824
Germany	4,129		3,131
Others	138		432
	$	9,216	$	7,387