13. Segment and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Revenue and asset information by geographic region

	Three months ended September 30,				Nine months ended September 30,
	2015		2014		2015		2014
Revenues:
United States	$	13,433	$	7,826	$	31,687	$	19,950
Taiwan		36,670		23,795		87,919		58,684
China		6,982		4,928		17,345		15,424
	$	57,085	$	36,549	$	136,951	$	94,058
	As of the period ended
	September 30,		December 31,
	2015		2014
Long-lived assets:
United States	$	32,079	$	15,875
Taiwan		40,117		35,688
China		20,375		18,008
	$	92,571	$	69,571