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Stock Issuance and Stock Repurchase Program (Tables)
 9 Months Ended
Jul. 31, 2015
Stock Repurchase Program [Abstract]  
Stock repurchase program
The table below provides, for the periods indicated, information about our share repurchase programs:
 
Nine months ended July 31,
 
Three months ended July 31,
 
2015
 
2014
 
2015
 
2014
Number of shares purchased (in thousands)
214

 
10

 
3

 
5

Average price per share
$
31.50

 
$
35.03

 
$
37.64

 
$
35.42

Remaining authorization at July 31 (in thousands)
19,986

 
8,258

 
19,986

 
8,258