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Other Expense, Net (Tables)
 12 Months Ended
Jan. 31, 2015
Other Income and Expenses [Abstract]  
Other Expense, Net
Other expense, net was comprised of the following:
 
Year ended January 31,
2015
 
2014
 
2013
Interest income
$
1,723

 
$
2,360

 
$
1,944

Foreign currency exchange loss
(1,152
)
 
(1,872
)
 
(2,394
)
Other, net
(1,348
)
 
(1,008
)
 
(982
)
Other expense, net
$
(777
)
 
$
(520
)
 
$
(1,432
)