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Schedule of Other Income (Expense), Net (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Apr. 30, 2021 | Apr. 30, 2020 | Apr. 30, 2021 | Apr. 30, 2020
Other Income and Expenses [Abstract] |  |  |  |
Foreign currency transaction (losses) gains | $ (1,069) | $ (774) | $ 396 | $ 175
Equity in the net loss of investee | (528) |  | (528) |
Write-off of tax assets related to prior periods |  | (129) |  | (742)
Gain (loss) on investments | 5,435 | (1,226) | 5,822 | (817)
Other | (23) | (15) | (82) | 24
Total other income (expense), net | $ 3,815 | $ (2,144) | $ 5,608 | $ (1,360)

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