Segment Reporting and Geographic Information

3 Months Ended

Mar. 31, 2012

Segment Reporting and Geographic Information [Abstract]

Segment Reporting Disclosure [Text Block]

Segment Reporting and Geographic Information

The Company has one operating and reportable segment, which is reviewed by the Company’s chief decision maker. The Company’s chief decision maker is the Chief Executive Officer. The Company is engaged in the design, development, and manufacture of high-performance control metrology, defect inspection and data analysis systems used by semiconductor device manufacturers. The Company and its subsidiaries currently operate in a single reportable segment: the design, development, and manufacture of high-performance process control defect inspection, metrology, and process control software systems used by microelectronic device manufactures. The chief decision maker allocates resources and assesses performance of the business and other activities at the reporting segment level.  

The following table lists the different sources of revenue:

	Three Months Ended
	March 31,
	2012				2011
Systems and Software:
Inspection	$	22,856	50	%	$	23,103	46	%
Metrology	10,237		22	%	12,182		24	%
Data Analysis and Review	4,547		10	%	6,147		12	%
Parts	5,504		12	%	6,240		12	%
Services	2,565		6	%	2,927		6	%
Total revenue	$	45,709	100	%	$	50,599	100	%

For geographical revenue reporting, revenues are attributed to the geographic location in which the product is shipped.  Revenue by geographic region is as follows:

	Three Months Ended March 31,
	2012		2011
United States	$	9,355	$	12,575
Taiwan	8,665		10,148
Japan	1,393		3,877
China	1,913		6,465
South Korea	14,492		5,552
Other Asia	5,104		2,887
Austria	2,598		3,001
Germany	373		3,535
Other Europe	1,816		2,559
Total revenue	$	45,709	$	50,599

Customers comprising 10% or more of revenue:

	Three Months Ended March 31,
	2012		2011
Customer A	30.7	%	4.3	%
Customer B	10.4	%	12.4	%
Customer C	6.0	%	10.6	%