Allocated Share-based Compensation Expense, Potential Accrual

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

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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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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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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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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		9 Months Ended
	Feb. 14, 2019	Nov. 01, 2018	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 3,800,000	$ 3,100,000	$ 9,700,000	$ 13,700,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 1,900,000	1,800,000	$ 6,300,000	5,700,000
Aggregate number of shares outstanding (in shares)			284,270		284,270
Unrecognized share-based compensation costs			$ 14,100,000		$ 14,100,000
Weighted average vesting period					1 year 9 months
Restricted Stock \| Outside Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of restricted stock granted (in shares)	13,684
Grant date fair value of restricted shares (in usd per share)	$ 120.61
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			1,808,000	1,222,000	$ 3,071,000	7,741,000
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			$ 63,000	46,000	$ 259,000	211,000
Management Share Purchase Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)					5,800
Average price per share purchased by participants (in usd per share)			$ 122.02		$ 122.02
Management Share Purchase Plan \| Matching Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)					1,378
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)		74,650
Aggregate number of shares outstanding (in shares)			0		0
Potential accrued compensation cost			$ 3,700,000		$ 3,700,000
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)		74,650
Grant date fair value of restricted shares (in usd per share)		$ 102.18
Performance Share Plan 2017 \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 1,212,000	0	$ 1,212,000	0
Aggregate number of shares outstanding (in shares)			14,022		14,022
Compensation not yet recognized			$ 600,000		$ 600,000
Potential accrued compensation cost			7,800,000		7,800,000
Performance Share Plan 2016 \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense			$ 596,000	$ 379,000	$ 1,859,000	$ 5,224,000
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%