Quarterly report pursuant to Section 13 or 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)
$ in Thousands
9 Months Ended
Oct. 31, 2015
USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance $ (5,754)
Other comprehensive loss (532)
Ending balance (6,286)
Foreign Currency Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance (5,797)
Other comprehensive loss (510)
Ending balance (6,307)
Changes in Fair Value of Available for Sale Investments [Member]  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning balance 43
Other comprehensive loss (22)
Ending balance $ 21