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Stock Issuance and Stock Repurchase Program (Tables)
 3 Months Ended
Jan. 31, 2017
Stock Repurchase Program [Abstract]  
Stock repurchase program
The table below provides, for the periods indicated, information about our share repurchase programs:
 
Three months ended January 31,
 
2017
 
2016
Number of shares purchased (in thousands)
557

 
4,770

Average price per share
$
27.33

 
$
31.48

Remaining authorization at January 31 (in thousands)
15,281

 
13,765