Segment Reporting and Geographic Information

3 Months Ended

Mar. 31, 2015

Segment Reporting and Geographic Information [Abstract]

Segment Reporting Disclosure [Text Block]

Segment Reporting and Geographic Information

The Company is engaged in the design, development, manufacture and support of high-performance control metrology, defect inspection, advanced packaging lithography and data analysis systems used by microelectronics device manufacturers. The Company and its subsidiaries currently operate in a single operating segment: the design, development, manufacture and support of high-performance process control defect inspection, metrology, and process control software systems used by microelectronics device manufacturers, and therefore have one reportable segment. The Company’s chief operating decision maker is the Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the reporting segment level.

The following table lists the different sources of revenue:

	Three Months Ended
	March 31,
	2015				2014
Systems and Software:
Inspection	$	28,462	54	%	$	18,002	43	%
Metrology	7,599		15	%	5,749		14	%
Data Analysis and Review	7,794		15	%	5,974		14	%
Lithography	21		—	%	3,657		9	%
Parts	5,655		10	%	5,040		12	%
Services	3,039		6	%	3,227		8	%
Total revenue	$	52,570	100	%	$	41,649	100	%

For geographical revenue reporting, revenues are attributed to the geographic location in which the product is shipped.  Revenue by geographic region is as follows:

	Three Months Ended
	March 31,
	2015		2014
United States	$	17,648	$	9,934
Taiwan	13,329		7,930
Japan	1,314		1,284
China	6,088		4,830
South Korea	3,531		7,552
Other Asia	1,777		6,591
Germany	7,055		1,344
Other Europe	1,828		2,184
Total revenue	$	52,570	$	41,649

The following customers each accounted for more than 10% of total revenues for the indicated periods.

	Three Months Ended
	March 31,
	2015		2014
Customer A	11.1	%	4.5	%
Customer B	10.2	%	—	%
Customer C	2.2	%	14.0	%
Customer D	0.9	%	17.0	%