Annual report pursuant to Section 13 and 15(d)

Segment Information, Significant Customers and Geographic Information - Long-Lived Assets by Geographic Locations (Detail)

v3.7.0.1
Segment Information, Significant Customers and Geographic Information - Long-Lived Assets by Geographic Locations (Detail) - USD ($)
$ in Thousands
Jan. 31, 2017
Jan. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 18,424 $ 23,891
North America [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 14,729 $ 18,944
Long-lived assets, Percentage 80.00% 79.00%
Europe and Middle East [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 2,878 $ 3,575
Long-lived assets, Percentage 16.00% 15.00%
Asia Pacific [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 817 $ 1,372
Long-lived assets, Percentage 4.00% 6.00%