Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Loss - Schedule of Changes in Components of Accumulated Other Comprehensive Loss (Detail)

v3.4.0.3
Accumulated Other Comprehensive Loss - Schedule of Changes in Components of Accumulated Other Comprehensive Loss (Detail)
$ in Thousands
3 Months Ended
Apr. 30, 2016
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance $ (6,613)
Other comprehensive income 616
Ending balance (5,997)
Cumulative Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (6,644)
Other comprehensive income 607
Ending balance (6,037)
Unrealized Gain/Loss on Investments [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance 31
Other comprehensive income 9
Ending balance $ 40