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Geographical Data
 12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Geographical Data
Geographical Data
For the years ended December 31, 2017 and 2016, there was no material revenue attributable to any individual foreign country. Approximately 1% of foreign revenue is billed in foreign currency and foreign currency gains and losses are not material. Revenue by geographic area is allocated as follows (in thousands):
 
Year Ended December 31,
 
2017
 
2016
Domestic
$
10,393

 
$
14,070

Foreign
4,406

 
5,148

 
$
14,799

 
$
19,218


Long-lived assets were 100% located in domestic markets during both years ended December 31, 2017 and 2016.