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Allowance For Doubtful Accounts For Trade Accounts Receivable | 9 Months Ended
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Jul. 31, 2012
Allowance For Doubtful Accounts For Trade Accounts Receivable [Abstract] |
Allowance For Doubtful Accounts For Trade Accounts Receivable | (3) Allowance for Doubtful Accounts for Trade Accounts Receivable A summary of changes in the allowance for doubtful accounts for trade accounts receivable for the nine months ended July 31, 2012 and 2011 follows:
|  | Nine Months Ended |
|  | July 31, |
|  | 2012 |  |  | 2011 |
Balance at beginning of period | $ | 145,616 |  | $ | 120,450 |
Bad debt expense (recovery) |  | (8,958 | ) |  | 21,831 |
Losses charged to allowance |  | (34,577 | ) |  | (3,930 | )
Balance at end of period | $ | 102,081 |  | $ | 138,351 |

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- Definition Allowance for doubtful accounts for trade accounts receivable + References No definition available. + Details
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