GEOGRAPHIC AND CUSTOMER CONCENTRATION INFORMATION (Tables)

12 Months Ended

Dec. 31, 2012

Geographic and Customer Concentration Information [Abstract]

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,
	2012			2011			2010
	Amount		Percent	Amount		Percent	Amount		Percent
Net sales:
United States	$	17,476	14	$	10,311	6	$	7,211	5
Korea	47,611		38	84,623		46	67,973		49
Taiwan	28,577		23	37,507		20	18,878		14
Other Asia	22,177		17	33,112		18	36,856		27
Europe and others	10,685		8	19,394		10	7,418		5
	$	126,526	100	$	184,947	100	$	138,336	100

Summary of Geographic Information Relating to Property and Equipment

Geographical information relating to our property and equipment, net, as of December 31, 2012 and December 31, 2011 was as follows (in thousands):

- Definition

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

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