Segment Information (Tables)

9 Months Ended

Sep. 30, 2012

Segment Information [Abstract]

Summary of revenue by geographic region

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

	Three months ended September 30,				Nine months ended September 30,
	2012		2011		2012		2011
	(in thousands)				(in thousands)
Korea	$	6,929	$	20,324	$	9,332	$	37,309
United States		4,256		4,240		8,842		9,251
France		2,245		—		8,482		356
Australia		4,702		—		8,430		14
Taiwan		417		4,208		5,657		49,846
China		921		575		3,501		3,533
Japan		152		2,612		492		11,115
Other		320		1,678		2,416		3,211
Total Revenue	$	19,942	$	33,637	$	47,152	$	114,635

Summary of revenue by product type

The following table summarizes revenue by product type:

	Three months ended September 30,				Nine months ended September 30,
	2012		2011		2012		2011
	(in thousands)				(in thousands)
Core	$	1,344	$	6,602	$	9,417	$	61,622
Polished		16,580		25,117		32,709		48,077
Optical		1,558		1,909		4,525		4,912
Research & Development		422		—		447		15
Other		38		9		54		9
Total Revenue	$	19,942	$	33,637	$	47,152	$	114,635

Summary of assets by geographic region

The following table summarizes assets by geographic region:

	September 30, 2012		December 31, 2011
	(in thousands)
United States	$	209,868	$	223,430
Malaysia		36,575		36,492
Other		30		30
Total Assets	$	246,473	$	259,952