Annual report pursuant to Section 13 and 15(d)

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

v3.7.0.1
Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance $ (6,613) $ (5,754)
Other comprehensive income (loss) 1,242 (859)
Ending balance (5,371) (6,613)
Cumulative Translation Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance (6,644) (5,797)
Other comprehensive income (loss) 1,267 (847)
Ending balance (5,377) (6,644)
Unrealized Gain/Loss on Investments [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning balance 31 43
Other comprehensive income (loss) (25) (12)
Ending balance $ 6 $ 31