Annual report pursuant to Section 13 and 15(d)

Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail)

v3.3.1.900
Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance $ (5,754) $ (2,132)
Other comprehensive loss (859) (3,622)
Ending balance (6,613) (5,754)
Cumulative Translation Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (5,797) (2,150)
Other comprehensive loss (847) (3,647)
Ending balance (6,644) (5,797)
Unrealized Gain/Loss on Investments [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 43 18
Other comprehensive loss (12) 25
Ending balance $ 31 $ 43