Segment and Geographic Information

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Segment and Geographic Information

17. Segment and Geographic Information

The Company has one business activity, which is radiation therapy technology combined with magnetic resonance imaging, and operates in one reportable segment. The Company’s chief operating decision-maker, its chief executive officer, reviews its operating results on an aggregate basis for purposes of allocating resources and evaluating financial performance. Also, the Company does not have segment managers as the Company manages its operations as a single operating segment.

The following table sets forth revenue by geographic area based on the customers’ location (in thousands): 

	Year Ended December 31,
	2018		2017		2016
United States	$	34,231	$	11,506	$	1,106
Germany		13,727		—		—
Rest of world		33,004		22,536		21,131
Total revenue	$	80,962	$	34,042	$	22,237

At December 31, 2018 and 2017, all long-lived assets are located in the United States.