Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Reconciliation of change in gross unrecognized tax benefits
Balance, beginning of year	$ 12,222	$ 16,993	$ 30,272
Increase in benefit as a result of tax positions taken in prior years	2,148	2,140	1,575
Increase in benefit as a result of tax positions taken in current year	1,126	949	431
Decrease in benefit as a result of settlements	(2,670)	(4,707)	(9,174)
Decrease in benefit as a result of lapse of statute of limitations	(4,929)	(3,153)	(6,111)
Balance, end of year	$ 7,897	$ 12,222	$ 16,993

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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