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Note 9 - Mortgage Loans Held for Sale (Tables)
 6 Months Ended
Apr. 30, 2018
Notes Tables  
Allowance for Credit Losses on Financing Receivables [Table Text Block]
   
Three Months Ended
April 30,
    
Six Months Ended
April 30,
  
(In thousands)
  
2018
    
2017
    
2018
    
2017
  
                                 
Loan origination reserves, beginning of period
   $
3,188
     $
5,077
     $
3,158
     $
8,137
  
Provisions for losses during the period
    
38
      
45
      
68
      
79
  
Adjustments to pre-existing provisions for losses from changes in estimates
    
45
      
(1,340
)
    
45
      
(4,434
)
Loan origination reserves, end of period
   $
3,271
     $
3,782
     $
3,271
     $
3,782