Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Segment Information, Significant Customers and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2014
Oct. 31, 2013
Segment Reporting Information [Line Items]        
Total revenues $ 29,970 $ 37,771 $ 84,156 $ 110,703
North America [Member]
       
Segment Reporting Information [Line Items]        
Total revenues 15,673 21,508 49,170 61,068
Europe and Middle East [Member]
       
Segment Reporting Information [Line Items]        
Total revenues 10,272 13,324 26,970 39,663
Latin America [Member]
       
Segment Reporting Information [Line Items]        
Total revenues 1,475 2,629 4,653 7,724
Asia Pacific and Other International Locations [Member]
       
Segment Reporting Information [Line Items]        
Total revenues $ 2,550 $ 310 $ 3,363 $ 2,248
Sales [Member] | North America [Member]
       
Segment Reporting Information [Line Items]        
% of total revenues 52.00% 57.00% 58.00% 55.00%
Sales [Member] | Europe and Middle East [Member]
       
Segment Reporting Information [Line Items]        
% of total revenues 34.00% 35.00% 32.00% 36.00%
Sales [Member] | Latin America [Member]
       
Segment Reporting Information [Line Items]        
% of total revenues 5.00% 7.00% 6.00% 7.00%
Sales [Member] | Asia Pacific and Other International Locations [Member]
       
Segment Reporting Information [Line Items]        
% of total revenues 9.00% 1.00% 4.00% 2.00%