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Accumulated Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Jul. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of Accumulated Other Comprehensive Income (Loss) | Components of accumulated other comprehensive income (loss), on an after-tax basis where applicable, were as follows:
| As of
| July 31, 2021 |  | October 31, 2020
| (in thousands)
Cumulative currency translation adjustments | $ | (48,606) |  |  | $ | (57,463) |
Unrealized gain (loss) on derivative instruments, net of taxes | 180 |  |  | 3,389 |
Unrealized gain (loss) on available-for-sale securities, net of taxes | 15 |  |  | — |
Total accumulated other comprehensive income (loss) | $ | (48,411) |  |  | $ | (54,074) |
Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income | The effect of amounts reclassified out of each component of accumulated other comprehensive income (loss) into net income was as follows:
| Three Months Ended July 31, |  | Nine Months Ended July 31,
| 2021 |  | 2020 |  | 2021 |  | 2020
| (in thousands)
Reclassifications from accumulated other comprehensive income (loss) into unaudited condensed consolidated statements of operations: |  |  |  |  |  |  |
Gain (loss) on cash flow hedges, net of taxes |  |  |  |  |  |  |
Revenues | $ | 1,563 |  |  | $ | 466 |  |  | $ | 2,597 |  |  | $ | 648 |
Operating expenses | 3,267 |  |  | (1,175) |  |  | 9,583 |  |  | (2,211) |
Total reclassifications into net income | $ | 4,830 |  |  | $ | (709) |  |  | $ | 12,180 |  |  | $ | (1,563) |

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