Segment Information and Foreign Operations (Tables)

9 Months Ended

Sep. 30, 2012

Segment Information and Foreign Operations [Abstract]

Product Information

The following table represents revenue amounts (in thousands) by type:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Revenue by product type:
GaAs substrates	$	12,901	$	18,735	$	39,994	$	52,593
InP substrates		1,649		1,522		4,433		4,458
Ge substrates		2,007		2,954		7,078		8,645
Raw materials and other		4,251		5,094		17,942		17,206
Total	$	20,808	$	28,305	$	69,447	$	82,902

Revenue reported for products shipped to customers in the corresponding geographic region

The following table represents revenue amounts (in thousands) reported for products shipped to customers in the corresponding geographic region:

	Three Months Ended				Nine Months Ended
	September 30,				September 30
	2012		2011		2012		2011
Revenue by geographic region:
North America*	$	3,230	$	6,049	$	12,663	$	16,253
Europe		5,148		5,831		14,519		17,063
Japan		2,404		3,951		7,196		11,358
Taiwan		3,490		2,592		9,130		8,201
Asia Pacific		6,536		9,882		25,939		30,027
Total	$	20,808	$	28,305	$	69,447	$	82,902

Long-lived assets by geographic region

Long-lived assets consist primarily of property, plant and equipment, and are attributed to the geographic location in which they are located. Long-lived assets by geographic region were as follows (in thousands):

	As of
	September 30,		December 31,
	2012		2011
Long-lived assets by geographic region:
North America	$	350	$	484
China		35,851		33,798
	$	36,201	$	34,282