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Note 2 - Allowance for Doubtful Accounts for Trade Accounts Receivable
12 Months Ended
Oct. 31, 2014
Notes to Financial Statements  
Allowance for Doubtful Accounts for Trade Accounts Receivable Disclosure [Text Block]
(2)
Allowance for Doubtful Accounts for Trade Accounts Receivable
 
 
A summary of changes in the allowance for doubtful accounts for trade accounts receivable for the years ended October 31, 2014, 2013 and 2012 follows:
 
 
 
 
Years ended October 31,
 
 
 
2014
 
 
2013
 
 
2012
 
Balance at beginning of year
  $ 74,073     $ 92,148     $ 145,616  
Bad debt expense (recovery)
    18,915       20,461       (10,327 )
Losses charged to allowance
          (38,922 )     (43,141 )
Recoveries added to allowance
          386        
Balance at end of year
  $ 92,988     $ 74,073     $ 92,148