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Other Income (Expense), Net
 9 Months Ended
Oct. 31, 2012
Notes To Financial Statements [Abstract]  
Other Income (Expense), Net
Other Income (Expense), Net—Other income (expense), net was comprised of the following:

 
Three months ended October 31,
 
Nine months ended October 31,
 
2012
 
2011
 
2012
 
2011
Interest income
$
458

 
$
519

 
$
1,407

 
$
1,588

Foreign currency exchange gain (loss)
(243
)
 
211

 
(1,059
)
 
(183
)
Gain on conversion of equity method investment to controlling interest
—

 
1,519

 
—

 
1,519

Other, net
(158
)
 
(413
)
 
(587
)
 
(1,034
)
Other income (expense), net
$
57

 
$
1,836

 
$
(239
)
 
$
1,890