Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Segment Information, Significant Customers and Geographic Information - Long-Lived Assets by Geographic Locations (Detail) - USD ($)
$ in Thousands
Jan. 31, 2018
Jan. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 11,789 $ 18,424
North America [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 9,792 $ 14,729
Long-lived assets, Percentage 83.00% 80.00%
Europe and Middle East [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 1,949 $ 2,878
Long-lived assets, Percentage 17.00% 16.00%
Asia Pacific [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total long-lived assets by geographic location $ 48 $ 817
Long-lived assets, Percentage 0.00% 4.00%