Segment Information

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Segment Information

2. SEGMENT INFORMATION

The Company has determined that it operates in only one segment as it only reports profit and loss information on an aggregate basis to its chief operating decision maker.

Revenue is attributed by geographic region based on ship-to location of the Company's customers. The following table summarizes revenue by geographic region:

	Year Ended December 31,
	2011		2010		2009
	(in thousands)
Korea	$	51,461	$	25,605	$	2,723
Taiwan		50,006		31,914		8,779
United States		12,253		6,520		4,840
Japan		11,362		10,745		2,652
Other		8,918		2,578		814
Revenue	$	134,000	$	77,362	$	19,808

The following table summarizes sales by product type:

	Year Ended December 31,
	2011		2010		2009
	(in thousands)
Core	$	61,734	$	54,198	$	13,144
As-Cut		31		38		1,612
As-Ground		—		141		518
Polished		65,468		19,245		2,200
Optical		6,751		3,680		2,132
Other		16		60		202
Revenue	$	134,000	$	77,362	$	19,808

The following table summarizes assets by geographic region:

	As of December 31,
	2011		2010
	(in thousands)
United States	$	223,430	$	186,511
Malaysia		36,492		20,213
Japan		30		18
Total Assets	$	259,952	$	206,742