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Segment Reporting and Geographic Information (Tables)
9 Months Ended
Sep. 30, 2020
Segment Reporting [Abstract]  
Revenues by Geographic Region

Revenues by geographic region are as follows (in percentages):

 

 

 

Nine months ended

September 30,

 

 

Three months ended

September 30,

 

 

 

2019

 

 

2020

 

 

2019

 

 

2020

 

United States

 

 

98

%

 

 

99

%

 

 

98

%

 

 

99

%

Canada

 

 

2

%

 

 

1

%

 

 

2

%

 

 

1

%

Other countries

 

*

 

 

*

 

 

*

 

 

*

 

 

 

 

100

%

 

 

100

%

 

 

100

%

 

 

100

%

 

*

Less than 1% of revenue.