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Other Expense, Net
 6 Months Ended
Jul. 31, 2013
Other Income and Expenses [Abstract]  
Other Expense, Net
Other Expense, Net—Other expense, net was comprised of the following:

 
Three months ended July 31,
 
Six months ended July 31,
 
2013
 
2012
 
2013
 
2012
Interest income
$
530

 
$
474

 
$
1,155

 
$
949

Foreign currency exchange loss
(494
)
 
(601
)
 
(1,869
)
 
(816
)
Other, net
(308
)
 
(252
)
 
(517
)
 
(429
)
Other expense, net
$
(272
)
 
$
(379
)
 
$
(1,231
)
 
$
(296
)