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Allowance For Doubtful Accounts For Trade Accounts Receivable (Summary Of Changes In The Allowance For Doubtful Accounts For Trade Accounts Receivable) (Details) (USD $)
12 Months Ended
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance at beginning of year $ 92,148 $ 145,616 $ 120,450
Bad debt expense (recovery) 20,461 (10,327) 40,231
Losses charged to allowance (38,922) (43,141) (15,065)
Recoveries added to allowance 386 0 0
Balance at end of year $ 74,073 $ 92,148 $ 145,616