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Income Taxes (Details 4) - USD ($) $ in Thousands | Jul. 31, 2020 | Jul. 31, 2019
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Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Net deferred tax liabilities | $ 71,473 | $ 48,272
UNITED STATES |  |
Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Deferred Income Taxes and Other Liabilities, Noncurrent | 66,082 | 44,499
International [Member] |  |
Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Deferred Income Taxes and Other Liabilities, Noncurrent | $ 5,391 | $ 3,773

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