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Income Taxes (Summary of Unrecognized Tax Benefits) (Details) - USD ($) | 12 Months Ended
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Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2021
Activity Related to Unrecognized Tax Benefits [Roll Forward] |  |  |
Balance at beginning of period | $ 9,675,000 | $ 9,009,000 | $ 8,270,000
Increase related to current period | 681,000 | 598,000 | 528,000
Increase related to prior periods | 51,000 | 153,000 | 338,000
Expiration of statute of limitations | (1,406,000) | (83,000) | (48,000)
Decrease related to prior periods | (45,000) | (2,000) | (79,000)
Balance at end of period | $ 8,956,000 | $ 9,675,000 | $ 9,009,000

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10B -Publisher FASB -URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B + Details
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A + Details
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