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Reporting Segment and Geographic Information (Tables)
3 Months Ended
Mar. 31, 2019
Segment Reporting [Abstract]  
Summary of Revenue by Geographic Region Revenue by region was as follows:

 

 

Three Months Ended March 31,

 

 

2019

 

 

2018

 

 

(in thousands)

 

Revenue:

 

 

 

 

 

 

 

United States

$

3,614

 

 

$

2,527

 

Foreign:

 

 

 

 

 

 

 

Canada

 

538

 

 

 

970

 

Other Countries

 

1,219

 

 

 

1,156

 

Total

$

5,370

 

 

$

4,653