Allocated Share-based Compensation Expense, Potential Accrual

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Deferred Compensation Arrangement with Individual, Contributions by Plan Participants, Percentage of Salary, Maximum

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Deferred Compensation Arrangement with Individual, Employer Contribution, Percentage

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Holding Period

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- Definition

Share Based Compensation Arrangement by Share based Payment Award, Maximum Target Goal Percentage

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Share Based Compensation Arrangement by Share based Payment Award, Minimum Target Goal Percentage

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Performance Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Target Number of Shares

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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- Definition

The per share price that the individual must pay to acquire shares under the deferred compensation arrangement.

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- Definition

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Number of additional shares authorized for issuance under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

Gross number of share options (or share units) granted during the period.

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Number of options vested.

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- Definition

Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Stock Compensation Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Oct. 31, 2019	Feb. 11, 2016	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016	Feb. 17, 2011	Feb. 17, 2005
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, maximum shares that may be issued (in shares)		4,200,000					3,500,000	2,250,000
Stock compensation plan, additional shares that may be issued (in shares)		700,000
Compensation cost			$ 2,500	$ 5,200
Share purchase plan, company's matched contributions			25.00%
Potential accrued compensation cost	$ 4,900		$ 4,900
Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share purchase plan, compensation expense related to the matching contribution			$ 351	$ 289	$ 392
Management \| Retainer and Meeting Fees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share purchase plan, percentage compensation received in the form of restricted stock			100.00%
Other Participants \| Base Salary Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share purchase plan, percentage compensation received in the form of restricted stock			15.00%
Other Participants \| Deferred Bonus
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share purchase plan, percentage compensation received in the form of restricted stock			75.00%
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, maximum shares that may be issued (in shares)		2,112,500					1,562,500	562,500
Unrecognized share-based compensation costs	$ 12,500		$ 12,500
Unvested shares	284,270		284,270	279,431	301,229	293,810
Unrecognized share-based compensation costs weighted average period of recognition			1 year 6 months
Restricted stock awards vested (in shares)			77,031	84,696	69,294
Restricted stock awards vested, weighted average fair value (in usd per share)			$ 88.37	$ 68.82	$ 55.50
Restricted stock awards forfeited (in shares)			6,464	2,352	6,874
Potential accrued compensation cost	$ 8,400		$ 8,400	$ 7,500	$ 7,400
Restricted Stock \| Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, vesting period			3 years
Share purchase plan, shares of restricted stock issued			7,350	10,697	9,605
Share purchase plan, value per share of restricted issued (in usd per share)			$ 128.20	$ 123.45	$ 112.84
Restricted stock awards vested (in shares)			17,142	17,040	17,034
Restricted stock awards vested, weighted average fair value (in usd per share)			$ 89.08	$ 80.38	$ 80.62
Restricted stock awards forfeited (in shares)			321	259	1,461
Restricted Stock \| Employer Matched Contribution \| Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share purchase plan, shares of restricted stock issued			1,741	2,565	2,290
Restricted Stock \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, vesting period			3 years	3 years	3 years
Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation plan, vesting period			4 years	4 years	4 years
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost			$ 3,774	$ 8,579	$ 9,539
Performance share agreements, performance period			2 years	2 years	2 years
Performance share agreements, additional holding period			1 year	1 year	1 year
Performance share agreements, percentage of grants made, minimum			50.00%	50.00%	50.00%
Performance share agreements, percentage of grants made, maximum			200.00%	200.00%	200.00%
Stock compensation plan, target shares for grant (in shares)				74,650
Performance Based Awards \| 2017 Performance Share Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost			$ 1,270	$ 0	$ 0
Compensation not yet recognized,	$ 700		$ 700
Number of shares issued or estimated			13,127
Performance Based Awards \| 2016 Performance Share Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost			$ 2,504	$ 5,238	0
Number of shares issued or estimated				84,511
Performance Based Awards \| 2015 Performance Share Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost			$ 0	$ 3,341	6,752
Number of shares issued or estimated			145,197
Performance Based Awards \| 2014 Performance Share Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost			$ 0	$ 0	$ 2,787
Number of shares issued or estimated			102,193
Shares vested (shares)	84,511
Vested shares issued (shares)	84,511