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Business Segmentation and Geographical Distribution
12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Business Segmentation and Geographical Distribution
(13)Business Segmentation and Geographical Distribution

 

Revenue from international sources approximated $1,835 and $1,039 for the years ended December 31, 2017 and 2016, respectively. As part of our revenue from international sources, we recognized approximately $1,713 and $902 in product revenue from a number of German companies, in the aggregate, for the years ended December 31, 2017 and 2016, respectively.

 

Our operations comprise a single business segment and all of our long-lived assets are located within the United States.