Segment Information (Tables)

3 Months Ended

Mar. 31, 2015

Segment Reporting [Abstract]

Summary of Revenue by Geographic Region

The following table summarizes revenue by geographic region:

	Three months ended March 31,
	2015		2014
	(in thousands)
China	$	3,351	$	6,450
Taiwan		1,701		3,764
United States		1,523		1,370
Korea		725		1,896
Other		1,610		788
Revenue	$	8,910	$	14,268

Summary of Revenue by Product Type

The following table summarizes revenue by product type:

	Three months ended March 31,
	2015		2014
	(in thousands)
Core	$	5,109	$	11,355
Wafer		1,891		1,095
Optical		1,769		1,638
Research & Development		141		125
Other		—		55
Revenue	$	8,910	$	14,268

Summary of Assets by Geographic Region

The following table summarizes assets by geographic region:

	March 31, 2015		December 31, 2014
	(in thousands)
United States	$	146,828	$	156,105
Malaysia		38,796		38,765
Other		26		36
Total Assets	$	185,650	$	194,906