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Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2017
Accounting Policies [Abstract]  
Revenues by Geographic Area

During the years ended January 31, 2017, 2016 and 2015, revenues by geographic area, based on billing addresses of the customers, was as follows:

 

 

 

For the year ended

 

 

 

January 31,

 

 

 

2017

 

 

2016

 

 

2015

 

United States

 

$

90,449

 

 

$

60,411

 

 

$

38,091

 

Foreign countries

 

 

43,326

 

 

 

23,267

 

 

 

12,754

 

Total revenues

 

$

133,775

 

 

$

83,678

 

 

$

50,845