Allocated Share-based Compensation Expense, Potential Accrual

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Additional Service Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award, Weighted Average Vesting Period

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- Definition

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

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- Definition

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

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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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 shares authorized for issuance under share-based payment arrangement.

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Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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Number of shares issued under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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STOCK COMPENSATION PLANS - Additional Information (Details) - USD ($)			3 Months Ended		6 Months Ended
	Nov. 01, 2019	Feb. 14, 2019	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019	Nov. 01, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 2,400,000	$ 3,000,000.0	$ 5,200,000	$ 5,900,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 2,200,000	2,200,000	$ 4,700,000	4,400,000
Aggregate number of shares outstanding (in shares)			265,353		265,353
Unrecognized share-based compensation costs			$ 18,000,000.0		$ 18,000,000.0
Weighted average vesting period					2 years
Restricted Stock \| Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock granted (in shares)		12,100
Grant date fair value of restricted shares (in usd per share)		$ 136.76
Restricted Stock \| Outside Directors \| Scenario One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		1 year
Restricted Stock \| Outside Directors \| Scenario Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		2 years
Restricted Stock \| Outside Directors \| Scenario Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		3 years
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			157,000	650,000	$ 347,000	1,263,000
Additional service period					1 year
Management Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 48,000	105,000	$ 104,000	196,000
Management Share Purchase Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)					4,209
Average price per share purchased by participants (in usd per share)			$ 142.45		$ 142.45
Management Share Purchase Plan \| Matching Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)					1,007
Performance Share Plan 2018 \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 0	0	$ 0	0
Target number of common stock to be granted (in shares)							56,575
Aggregate number of shares outstanding (in shares)			0		0
Potential accrued compensation cost			$ 3,000,000.0		$ 3,000,000.0
Performance Share Plan 2018 \| Performance Based Awards \| Officers And Key Management Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock granted (in shares)	56,575
Grant date fair value of restricted shares (in usd per share)	$ 159.76
Performance Share Plan 2017 \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 157,000	0	$ 347,000	0
Aggregate number of shares outstanding (in shares)			13,093		13,093
Compensation not yet recognized			$ 324,000		$ 324,000
Potential accrued compensation cost			7,500,000		7,500,000
Performance Share Plan 2016 \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 0	$ 650,000	$ 0	$ 1,263,000
Additional service period					1 year
Aggregate number of shares outstanding (in shares)			84,511		84,511
Minimum \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential performance shares received					50.00%
Maximum \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of potential performance shares received					200.00%