Segment Information (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Summary of Revenues on Percentage Basis by Geographic Regions

The following table summarizes revenues on a percentage basis by geographic regions, based on the region in which the customer is located.

	Three Months Ended March 31,
	2018			2017
United States		67	%		65	%
South America		10	%		10	%
Japan		2	%		3	%
Europe		15	%		16	%
Other		6	%		6	%
		100	%		100	%