Segment Information (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Summary of Revenues on Percentage Basis by Geographic Region

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

	Year Ended December 31,
	2019			2018			2017
United States		51	%		63	%		78	%
South America		11	%		10	%		7	%
Japan		7	%		5	%		2	%
Europe		19	%		15	%		9	%
Other		12	%		7	%		4	%
		100	%		100	%		100	%