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Note 6 - Warranty Costs (Tables)
 6 Months Ended
Apr. 30, 2017
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
Three Months Ended
April 30,
    
Six Months Ended
April 30,
  
(In thousands)
  
2017
    
2016
    
2017
    
2016
  
                                 
Balance, beginning of period
   $
118,013
     $
133,389
     $
121,144
     $
135,053
  
Additions
– Selling, general and administrative
    
2,856
      
4,292
      
5,764
      
8,915
  
Additions
– Cost of sales
    
3,515
      
4,539
      
7,002
      
7,921
  
Charges incurred during the period
    
(7,177
 )    
(5,514
)
    
(16,703
 )    
(15,183
)
Changes to pre-existing reserves
    
-
      
-
      
-
      
-
  
Balance, end of period
   $
117,207
     $
136,706
     $
117,207
     $
136,706