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Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Apr. 30, 2018
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:
| April 30, 2018 |  | October 31, 2017
| (in thousands)
Cumulative currency translation adjustments | $ | (60,449 | ) |  | $ | (70,407 | )
Unrealized gain (loss) on derivative instruments, net of taxes | (1,940 | ) |  | 4,428 |
Total accumulated other comprehensive income (loss) | $ | (62,389 | ) |  | $ | (65,979 | )
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 April 30, |  | Six Months Ended April 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (in thousands)
Reclassifications from accumulated other comprehensive income (loss) into unaudited condensed consolidated statement of operations: |  |  |  |  |  |  |
Gain (loss) on cash flow hedges, net of taxes |  |  |  |  |  |  |
Revenues | $ | (169 | ) |  | $ | (428 | ) |  | $ | 1,498 |  |  | $ | (2,181 | )
Operating expenses | 5,711 |  |  | (1,310 | ) |  | 9,350 |  |  | (3,412 | )
Gain (loss) on available-for-sale securities |  |  |  |  |  |  |
Other income (expense) | — |  |  | — |  |  | — |  |  | 1 |
Total reclassifications into net income | $ | 5,542 |  |  | $ | (1,738 | ) |  | $ | 10,848 |  |  | $ | (5,592 | )

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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