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Accounts Receivable, Net (Tables) | 12 Months Ended
--- | ---
Jul. 31, 2012
Accounts Receivable, Net [Abstract] |
Schedule of accounts receivable |
|  |  |  | July 31, |
--- | --- | --- | --- | --- | ---
|  |  |  | 2012 |  | 2011
Advance charges receivable |  |  |  | $ | 85,237 |  |  | $ | 71,961 |
Trade accounts receivable |  |  |  |  | 54,229 |  |  |  | 53,569 |
Other receivables |  |  |  |  | 2,420 |  |  |  | 451 |
|  |  |  |  | 141,886 |  |  |  | 125,981 |
Less allowance for doubtful accounts |  |  |  |  | (2,920 | ) |  |  | (3,122 | )
|  |  |  | $ | 138,966 |  |  | $ | 122,859 |
Schedule of movements in the allowance for doubtful accounts |
Description and Fiscal Year |  |  |  | Balance at Beginning of Year |  | Charged to Costs And Expenses |  | Deductions to Bad Debt |  | Balance at End of Year
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
July 31, 2012 |  |  |  | $ | 3,122 |  |  | $ | 1,626 |  |  | $ | (1,828 | ) |  | $ | 2,920 |
July 31, 2011 |  |  |  |  | 2,841 |  |  |  | 478 |  |  |  | (197 | ) |  |  | 3,122 |
July 31, 2010 |  |  |  |  | 2,405 |  |  |  | 1,591 |  |  |  | (1,155 | ) |  |  | 2,841 |

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- Definition Tabular disclosure of movements in the allowance for doubtful accounts. + References No definition available. + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 + Details
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