GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION

12 Months Ended

Dec. 31, 2015

Geographic and Customer Concentration Information [Abstract]

Geographic and Customer Concentration Information

GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION

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. For the purposes of evaluating our reportable segments, our Chief Executive Officer is the chief operating decision maker.

We have one operating segment in which we design, manufacture and market advanced fabrication equipment for the semiconductor manufacturing industry. 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.

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):

	For the Years Ended December 31,
	2015			2014			2013
	Amount		Percent	Amount		Percent	Amount		Percent
Net revenue:
United States	$	25,061	15	$	25,716	14	$	12,350	10
Korea	73,798		43	87,585		49	22,173		19
Taiwan	17,537		10	32,304		18	50,782		43
China	29,209		17	17,369		10	20,250		17
Other Asia	19,560		11	6,869		4	8,740		7
Europe and others	7,367		4	8,561		5	5,139		4
	$	172,532	100	$	178,404	100	$	119,434	100

In 2015, two customers accounted for 10 percent or more of our total net revenues. Sales to these customers represented 54 percent and 11 percent of our total net revenues, respectively. In 2014, one customer accounted for 10 percent or more of our total net revenues. Sales to this customer represented 61 percent of our total net revenues. 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.

As of December 31, 2015, five customers accounted for 10 percent or more of our total net accounts receivable, representing approximately 36 percent, 12 percent, 12 percent, 11 percent and 10 percent of our total net accounts receivable, respectively. As of December 31, 2014, one customer accounted for 10 percent or more of our net accounts receivable representing approximately 74 percent of our total net accounts receivable.

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

	2015		2014
Property and equipment, net:
United States	$	3,350	$	4,140
Germany	4,712		3,185
Others	174		209
	$	8,236	$	7,534