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Income Taxes (Details 4) - USD ($) $ in Thousands | Jul. 31, 2019 | Jul. 31, 2018
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Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Net deferred tax liabilities | $ 48,272 | $ 19,263
UNITED STATES |  |
Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Non-current liabilities | 44,499 | 16,018
International [Member] |  |
Schedule Of Deferred Tax Assets (Liabilities) [Line Items] |  |
Non-current liabilities | $ (3,773) | $ (3,245)

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