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Related Party Transactions (Tables)
3 Months Ended
Apr. 30, 2015
Related Party Transactions [Abstract]  
Revenue recognized from related party
The following table shows revenue recognized from these customers:
 
Three months ended April 30,
 
2015
 
2014
Revenues from customers
$
3,066

 
$
6,050

Percentage of total revenues
1.1
%
 
2.4
%