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Geographical Information (Tables)
 9 Months Ended
Jun. 30, 2019
Segment Reporting [Abstract]  
Schedule of Revenue by Geographic Region
The following tables set forth revenue by geographic region with revenue assigned to geographic regions based on our customers’ billing address.

Revenue by Geographic Region
 
For the three months ended June 30,
For the nine months ended June 30,
(in thousands)
 
2019
 
2018
2019
 
2018
United States and Canada
 
$
14,208

 
$
12,965

$
48,432

 
$
47,984

Asia
 
1,684

 
3,116

9,936

 
7,919

Europe
 
1,315

 
1,534

4,362

 
4,266

Other
 
12

 
102

235

 
207

Total revenue
 
$
17,219

 
$
17,717

$
62,965

 
$
60,376