XML 49 R27.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note 2 - Allowance for Doubtful Accounts for Trade Accounts Receivable (Tables)
 12 Months Ended
Oct. 31, 2015
Notes Tables  
Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable [Table Text Block]
   
Years ended October 31,
 
 
 
2015
 
 
2014
 
 
2013
  
Balance at beginning of year
   $ 92,988     $ 74,073     $ 92,148  
Bad debt expense (recovery)
     (16,889 )     18,915       20,461  
Losses charged to allowance
     (13,088 )     —       (38,922 )
Recoveries added to allowance
     —       —       386  
Balance at end of year
   $ 63,011     $ 92,988     $ 74,073