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OTHER INCOME AND OTHER EXPENSES (Schedule of Interest Income and Expense of Continuing Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Jan. 31, 2021 | Jan. 31, 2020
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 123 | $ 2,397 | $ 2,011 | $ 12,648
Foreign currency gains (losses), net | 489 | (139) | 544 | (25)
Other, net | 1,755 |  |  |
Other, net |  | (379) | (2,204) | (1,118)
Other income (expense), net | $ 2,367 | $ 1,879 | $ 4,759 | $ 13,741

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