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Interest and Other Income (Loss), Net (Tables)
 6 Months Ended
Apr. 30, 2018
Other Income and Expenses [Abstract]  
Schedule of Interest and Other Income (Loss), Net
The components of interest and other income (loss), net, are as follows (in thousands):
 
Quarter Ended April 30,
 
Six Months Ended April 30,
 
2018
 
2017
 
2018
 
2017
Interest income
$
3,212

 
$
1,507

 
$
5,656

 
$
2,789

Gains (losses) on non-hedge designated foreign currency forward contracts
2,868

 
(2,749
)
 
2,169

 
(1,725
)
Foreign currency exchange gain (loss)
(4,804
)
 
1,292

 
(4,791
)
 
(1,125
)
Modification of term loan
—

 
(2,924
)
 
—

 
(2,924
)
Other
20

 
(44
)
 
(163
)
 
437

Interest and other income (loss), net
$
1,296

 
$
(2,918
)
 
$
2,871

 
$
(2,548
)