Discontinued Operations - Schedule of Components of Financial Results (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of income taxes	$ (17,813)	$ 544	$ (13,155)	$ (296)
Discontinued operations \| Software Integrity business
Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	127,917	132,898	392,579	392,860
Cost of revenue	40,279	47,050	136,010	145,188
Operating expenses	91,854	90,450	262,745	258,008
Interest and other income (expense), net	605	324	1,601	722
Income (loss) from discontinued operations before income taxes	(3,611)	(4,278)	(4,575)	(9,614)
Income tax provisions (benefits)	14,202	(4,822)	8,580	(9,318)
Income (loss) from discontinued operations, net of income taxes	$ (17,813)	$ 544	$ (13,155)	$ (296)

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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