Geographic and Significant Customer Information

The Company has one operating segment, which is the sale, design, manufacture, marketing and support of thin film, optical critical dimension and overlay dimension metrology systems. The following table summarizes total net revenues (based on the deployments and service location of the systems) and long-lived assets (excluding intangible assets) attributed to significant geographic regions (in thousands):



	Three Months Ended				Nine Months Ended
	October 1, 2011		October 2, 2010		October 1, 2011		October 2, 2010
Total net revenues:
South Korea	$	22,986	$	13,318	$	70,603	$	40,628
United States	13,309		22,801		36,548		57,204
Japan	10,912		3,355		27,173		13,133
Europe, the Middle East and Africa	3,054		2,016		20,996		3,883
China	3,304		6,518		12,712		13,452
All other	4,704		5,927		16,752		13,635
Total net revenues	$	58,269	$	53,935	$	184,784	$	141,935

No individual country in Europe, the Middle East and Africa accounted for more than 10% of the total revenue in the periods presented.



	October 1, 2011		January 1, 2011
Long lived assets
United States	$	33,600	$	33,377
South Korea	992		1,229
Japan	466		518
Europe, the Middle East and Africa	931		1,048
China	39		28
All Other	392		221
Total long lived assets	$	36,420	$	36,421

The following customers accounted for 10% or more of total accounts receivable:



	October 1, 2011		January 1, 2011
Samsung Electronics Co. Ltd.	21.2	%	19.2	%
Hynix Semiconductor, Inc.	18.7	%	***
Toshiba	10.2	%	***

*** The customer accounted for less than 10% of total consolidated accounts receivable on that date.

The following customers accounted for 10% or more of total revenue:



	Three Months Ended				Nine Months Ended
	October 1, 2011		October 2, 2010		October 1, 2011		October 2, 2010
Intel Corporation	14.3	%	16.4	%	18.6	%	20.3	%
Samsung Electronics Co. Ltd.	31.8	%	19.1	%	28.2	%	23.3	%
Hynix Semiconductor, Inc.	***		13.3	%	12.1	%	14.6	%

*** The customer accounted for less than 10% of total consolidated revenue for that period.