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Warranty Accrual (Tables)
3 Months Ended
Jan. 31, 2012
Warranty accrual [Abstract]  
Reconciliation of the product warranty liability
                 

Three months ended

  January 31,
2012
    January 31,
2011
 

Beginning balance

  $ 6,723     $ 5,242  

Accruals for warranties

    1,006       1,411  

Warranty payments

    (1,358     (1,347

Currency effect

    (119     (25
   

 

 

   

 

 

 

Ending balance

  $ 6,252     $ 5,281