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Summary of Significant Accounting Policies Revenue Recognition (Details) - USD ($) $ in Thousands | Jul. 31, 2022 | Jul. 31, 2021
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Accounting Policies [Abstract] |  |
Contract with Customer, Refund Liability | $ 4,415 | $ 5,510

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- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 55 -Paragraph 27 -URI https://asc.fasb.org/extlink&oid=126920602&loc=SL49130611-203046-203046 + Details
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