Segment Information and Foreign Operations (Tables)

3 Months Ended

Mar. 31, 2015

Segment Information and Foreign Operations [Abstract]

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:

	ThreeMonthsEnded March31,
	2015		2014
Geographical information:
Europe (primarily Germany)	$	4,943	$	6,583
China		3,297		4,165
Asia Pacific (excluding China, Japan and Taiwan)		2,759		2,389
Taiwan		3,109		2,115
Japan		2,484		2,313
North America (primarily the United States)		3,472		1,780
Total	$	20,064	$	19,345

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):

	Asof
	March31, 2015		December31, 2014
Long-lived assets by geographic region:
United States of America	$	403	$	136
China		32,820		33,726
	$	33,223	$	33,862