Annual report pursuant to Section 13 and 15(d)

Segment Information, Significant Customers and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail)

v3.3.1.900
Segment Information, Significant Customers and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Segment Reporting Information [Line Items]      
Total revenues $ 106,992 $ 115,435 $ 146,319
North America [Member]      
Segment Reporting Information [Line Items]      
Total revenues 58,113 64,755 77,105
Europe and Middle East [Member]      
Segment Reporting Information [Line Items]      
Total revenues 42,201 39,387 53,105
Latin America [Member]      
Segment Reporting Information [Line Items]      
Total revenues 4,707 6,829 13,156
Asia Pacific [Member]      
Segment Reporting Information [Line Items]      
Total revenues $ 1,971 $ 4,464 $ 2,953
Customer Concentration Risk [Member] | Total Revenue [Member]      
Segment Reporting Information [Line Items]      
% of total revenues 10.00% 10.00% 10.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | North America [Member]      
Segment Reporting Information [Line Items]      
% of total revenues 55.00% 56.00% 53.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Europe and Middle East [Member]      
Segment Reporting Information [Line Items]      
% of total revenues 39.00% 34.00% 36.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Latin America [Member]      
Segment Reporting Information [Line Items]      
% of total revenues 4.00% 6.00% 9.00%
Customer Concentration Risk [Member] | Total Revenue [Member] | Asia Pacific [Member]      
Segment Reporting Information [Line Items]      
% of total revenues 2.00% 4.00% 2.00%