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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
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Oct. 31, 2012 | Oct. 31, 2011 | Oct. 31, 2010
Allowance For Doubtful Accounts For Trade Accounts Receivable [Abstract] |  |  |
Balance at beginning of year | $ 145,616 | $ 120,450 | $ 108,913
Bad debt expense (recovery) | (10,327) | 40,231 | 29,798
Losses charged to allowance | (43,141) | (15,065) | (18,261)
Balance at ending of year | $ 92,148 | $ 145,616 | $ 120,450

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- Details
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Balance Type: | na
Period Type: | duration

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- Definition Amount of direct write-downs of receivables charged against the allowance for doubtful accounts. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Period Type: | instant

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- Definition Amount of recoveries of receivables doubtful of collection that were previously charged off. + References No definition available. + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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