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Other Income (Expense), Net (Tables)
 12 Months Ended
Jan. 31, 2016
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
Other income (expense), net was comprised of the following:
Year ended January 31,
2016
 
2015
 
2014
Interest income
$
1,870

 
$
1,723

 
$
2,360

Foreign currency exchange gain (loss)
199

 
(1,152
)
 
(1,872
)
Other, net
(457
)
 
(1,348
)
 
(1,008
)
Other income (expense), net
$
1,612

 
$
(777
)
 
$
(520
)