Segment Information

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information

2. SEGMENT INFORMATION

The Company has determined that it operates in only one segment as it only reports profit and loss information on an aggregate basis to its chief operating decision maker.

Revenue is attributed by geographic region based on ship-to location of the Company’s customers. The following table summarizes revenue by geographic region:

	Year Ended December 31,
	2016		2015
	(in thousands)
Germany	$	8,945	$	3,718
United States		3,364		4,894
Malaysia		2,880		—
Korea		1,486		3,646
Canada		876		522
Taiwan		847		3,490
Australia		509		913
Israel		398		785
China		222		5,499
Other		103		351
Total revenue	$	19,630	$	23,818

The following table summarizes sales by product type:

	Year Ended December 31,
	2016		2015
	(in thousands)
Wafer	$	13,121	$	6,627
Optical		4,568		5,086
Core		1,652		11,444
Research & development		289		661
Total revenue	$	19,630	$	23,818

The following table summarizes assets by geographic region:

	As of December 31,
	2016		2015
	(in thousands)
United States	$	47,171	$	88,916
Malaysia		5,811		30,276
Other		31		50
Total assets	$	53,013	$	119,242