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Long-Term Debt And Note Payable To Bank (Schedule Of Debt) (Details) (USD $) |  |  | 9 Months Ended |  | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2012 | Oct. 31, 2011 | Jul. 31, 2012 Virginia Real Estate Loan [Member] | Oct. 31, 2011 Virginia Real Estate Loan [Member] | Jul. 31, 2012 North Carolina Real Estate Loan [Member] | Oct. 31, 2010 North Carolina Real Estate Loan [Member]
Debt Instrument [Line Items] |  |  |  |  |  |
Total long-term debt | $ 8,048,364 | $ 8,190,904 | $ 5,985,626 | $ 6,091,633 | $ 2,062,738 | $ 2,099,271
Less current installments | 200,565 | 190,593 |  |  |  |
Long-term debt, excluding current installments | 7,847,799 | 8,000,311 |  |  |  |
Debt instrument, principal amount |  |  | 6,500,000 |  | 2,240,000 |
Debt instrument, periodic payment |  |  | 41,686 |  | 14,366 |
Debt instrument, interest rate, stated percentage |  |  | 5.85% |  | 5.85% |
Final payments of debt |  |  | $ 5,035,789 |  | $ 1,735,410 |
Debt instrument, maturity date |  |  | Apr. 30, 2018 |  | Apr. 30, 2018 |

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