Segment Information (Tables)

3 Months Ended

Mar. 31, 2014

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 country in which the customer is located.

	Three months ended March 31,
	2014			2013
United States		80	%		87	%
Japan		6	%		9	%
Europe		9	%		3	%
Other		5	%		1	%
		100	%		100	%