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Accounts Receivable, Net (Details 1) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Jul. 31, 2012 | Jul. 31, 2011 | Jul. 31, 2010
Allowance for Doubtful Accounts Receivable [Roll Forward] |  |  |
Balance at Beginning of Year | $ 3,122 | $ 2,841 | $ 2,405
Charged to Costs And Expenses | 1,626 | 478 | 1,591
Deductions to Bad Debt | (1,828) | (197) | (1,155)
Balance at End of Year | $ 2,920 | $ 3,122 | $ 2,841

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- Definition Allowance for Doubtful Accounts Receivable, Deductions To Bad Debts. + References No definition available. + Details
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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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- 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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- Details
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