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Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable - Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable (Details) (USD $)
3 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Balance at beginning of period $ 92,988us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 74,073us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Bad debt expense (recovery) (26,411)us-gaap_ProvisionForDoubtfulAccounts (7,255)us-gaap_ProvisionForDoubtfulAccounts
Losses charged to allowance (6,820)us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs   
Balance at end of period $ 59,757us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 66,818us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent