12. Segment and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Revenue and asset information by geographic region

	Three months ended September 30,				Nine months ended September 30,
	2013		2012		2013		2012
Revenues:
United States		3,742		2,685		8,364		8,652
Taiwan		7,576		3,757		22,616		9,760
China		9,448		9,974		23,700		26,147
	$	20,766	$	16,416	$	54,680	$	44,559
	For the period ending
	September 30,		December 31,
	2013		2012
Long-lived assets:
United States		9,105		9,009
Taiwan		4,860		3,738
China		14,945		13,560
	$	28,910	$	26,307