13. Segment and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Revenue and asset information by geographic region

Long-lived assets in the tables below comprise only property, plant, equipment and intangible assets (in thousands):

	Three months ended March 31,
	2015		2014
Revenues:
United States	$	7,294	$	5,137
Taiwan		18,341		14,340
China		4,599		5,382
	$	30,234	$	24,859

	As of the period ended
	March 31,		December 31,
	2015		2014
Long-lived assets:
United States	$	19,074	$	15,875
Taiwan		37,411		35,688
China		17,775		18,008
	$	74,260	$	69,571