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Summary of Significant Accounting and Reporting Policies (Adoption of New Accounting Pronouncements) (Details) - USD ($) | Jul. 31, 2021 | Jul. 31, 2020
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New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Allowance for doubtful acconts | $ 1,648,000 | $ 1,769,000
Cumulative Effect, Period of Adoption, Adjustment |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Allowance for doubtful acconts |  | $ 215,000

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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Details
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