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Related Party Transactions
3 Months Ended
Apr. 30, 2012
Notes To Financial Statements [Abstract]  
Related Party Transactions
Related Party Transactions—Certain members of our Board of Directors also serve on the board of directors for some of our customers. Management believes the transactions between these customers and us were carried out on an arm’s-length basis. As of April 30, 2012 and January 31, 2012, accounts receivable from these customers were not significant. The following table shows revenue recognized from these customers:
Three months ended April 30,
2012
 
2011
Revenues from customers
$
9,002

 
$
17,306

Percentage of total revenues
3.6
%
 
7.5
%