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Other Income (Expense), Net (Tables)
 9 Months Ended
Oct. 31, 2014
Other Income and Expenses [Abstract]  
Other income (expense), net
Other income (expense), net was comprised of the following:
 
Three months ended October 31,
 
Nine months ended October 31,
 
2014
 
2013
 
2014
 
2013
Interest income
$
346

 
$
681

 
$
1,290

 
$
1,836

Foreign currency exchange loss
(429
)
 
(198
)
 
(1,142
)
 
(2,067
)
Other, net
(298
)
 
(131
)
 
(891
)
 
(648
)
Other income (expense), net
$
(381
)
 
$
352

 
$
(743
)
 
$
(879
)