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Other Income (Expense), Net (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2020 | Jan. 31, 2019
Other Income and Expenses [Abstract] |  |  |  |
Foreign currency transaction gains (losses) | $ 278 | $ 370 | $ 949 | $ (835)
Gain on investments | 383 | 128 | 409 | 81
Other | (111) | (2) | (573) | (99)
Total other income (expense), net | $ 550 | $ 496 | $ 785 | $ (853)

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