Quarterly report pursuant to Section 13 or 15(d)

Segment Information, Significant Customers and Geographic Information - Schedule of Revenue by Major Customers by Reporting Segments (Detail)

v2.4.0.8
Segment Information, Significant Customers and Geographic Information - Schedule of Revenue by Major Customers by Reporting Segments (Detail) (Sales [Member])
 3 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Customer A [Member]
    
Revenue, Major Customer [Line Items]    
% of total revenue 20.00% 15.00%
Customer B [Member]
    
Revenue, Major Customer [Line Items]    
% of total revenue 18.00% 32.00%