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Comprehensive income (Tables)
3 Months Ended
Jan. 31, 2012
Comprehensive income [Abstract]  
Summary of comprehensive income
                 
    January 31,
2012
    January 31,
2011
 

Net income

  $ 38,338     $ 45,897  

Foreign currency translation adjustments

    (8,354     (6,832

Amortization of prior service cost and net actuarial losses

    2,712       1,550  
   

 

 

   

 

 

 

Comprehensive income

  $ 32,696     $ 40,615  
   

 

 

   

 

 

 
Components of activity for accumulated other comprehensive income
                 
    January 31,
2012
    January 31,
2011
 

Beginning balance

  $ (80,012   $ (66,306

Current-period change

    (5,642     (5,282
   

 

 

   

 

 

 

Ending balance

  ($ 85,654   ($ 71,588