Quarterly report pursuant to Section 13 or 15(d)

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

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Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Oct. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance $ (1,826)
Other comprehensive income (loss) 520
Ending Balance (1,306)
Foreign Currency Translation Adjustment [Member]
 
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance (1,857)
Other comprehensive income (loss) 527
Ending Balance (1,330)
Changes in Fair Value of Available for Sale Investments [Member]
 
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Beginning Balance 31
Other comprehensive income (loss) (7)
Ending Balance $ 24