Segment Reporting and Geographic Information

3 Months Ended

Mar. 31, 2016

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, advanced packaging lithography, and process control software systems used by microelectronics device manufacturers, and therefore the Company has 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,
	2016				2015
Systems and Software:
Process Control	$	36,459	67	%	$	36,061	69	%
Lithography	170		—	%	21		—	%
Software	7,422		14	%	7,794		15	%
Parts	7,160		13	%	5,655		10	%
Services	3,151		6	%	3,039		6	%
Total revenue	$	54,362	100	%	$	52,570	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,
	2016		2015
United States	$	7,388	$	17,648
Taiwan	22,035		13,329
Japan	2,937		1,314
China	8,825		6,088
South Korea	1,623		3,531
Singapore	7,047		1,738
Other Asia	871		39
Germany	697		7,055
Other Europe	2,939		1,828
Total revenue	$	54,362	$	52,570

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

	Three Months Ended
	March 31,
	2016		2015
Customer A	26.9	%	11.1	%
Customer B	4.3	%	10.2	%