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)

v3.4.0.3
Segment Information, Significant Customers and Geographic Information - Schedule of Revenue by Major Customers by Reporting Segments (Detail) - Customer Concentration Risk [Member] - Total Revenue [Member]
 3 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Customer A [Member]    
Revenue, Major Customer [Line Items]    
% of total revenues 32.00% 20.00%
Customer B [Member]    
Revenue, Major Customer [Line Items]    
% of total revenues   17.00%