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 countries (in thousands):



	Three Months Ended				Six Months Ended
	July 2, 2011		July 3, 2010		July 2, 2011		July 3, 2010
Total net revenues:
South Korea	$	22,474	$	11,165	$	47,617	$	27,310
United States	8,673		21,472		17,441		34,404
Europe	9,162		1,111		23,727		1,867
Japan	8,371		6,838		16,261		9,778
China	7,566		4,938		9,409		6,934
Taiwan	4,976		4,928		6,781		6,515
Singapore	3,076		333		3,975		690
All other	74		50		1,304		502
Total net revenues	$	64,372	$	50,835	$	126,515	$	88,000



	July 2, 2011		January 1, 2011
Long lived assets
United States	$	35,542	$	33,377
South Korea	1,066		1,229
Europe	861		915
Japan	479		518
Taiwan	54		60
China	42		28
Singapore	306		161
All Other	138		133
Total long lived assets	$	38,488	$	36,421

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



	July 2, 2011		January 1, 2011
Samsung Electronics Co. Ltd.	16.4	%	19.2	%
Hynix Semiconductor, Inc.	26.9	%	***

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

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



	Three Months Ended				Six Months Ended
	July 2, 2011		July 3, 2010		July 2, 2011		July 3, 2010
Intel Corporation	12.8	%	22.5	%	20.6	%	22.7	%
Samsung Electronics Co. Ltd.	25.6	%	16.8	%	26.5	%	25.9	%
Hynix Semiconductor, Inc.	18.1	%	19.8	%	15.0	%	15.4	%