Share-based compensation arrangement by share-based payment award annual shares issuable.

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Share-Based Compensation Arrangement By Share Based Payment Award Annual Shares Issuable, Grant Date Value

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Authorized Plan Extension Period

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- Definition

Share based compensation arrangement by share based payment award number of shares available for grant other than options and SARs.

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- Definition

Share based compensation arrangement by share based payment award percent of actual amount of units earned.

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- Definition

Share based compensation arrangement by share based payment award target RSU granted range.

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

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Aggregate number of common shares reserved for future issuance.

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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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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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The highest quantity of shares an employee can purchase under the plan per period.

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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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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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Per share or per unit amount of equity securities issued.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended				12 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2014	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022	Oct. 01, 2023
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock outstanding (in shares)					192,011	292,497
Compensation expense					$ 4.2	$ 4.0	$ 3.7
Amounts not yet recognized related to non-vested stock totaled					$ 2.1	1.4
Weighted average remaining contractual life					1 year 2 months 23 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued annually, grant date value								$ 0.1
Compensation expense					$ 0.6	$ 0.6	$ 0.4
Weighted average remaining contractual life					5 months
2014 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized plan extension period		5 years
Number of additional shares authorized (in shares)		600,000
Number of shares authorized (in shares)		1,350,000
2014 Equity Incentive Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
2014 Equity Incentive Plan \| Restricted Stock Units (RSUs) \| Time Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
2014 Equity Incentive Plan \| Restricted Stock Units (RSUs) \| Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				3 years
2014 Equity Incentive Plan \| Restricted Stock Units (RSUs) \| Minimum \| Time Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual amount of RSUs earned based on cumulative earnings				50.00%
2014 Equity Incentive Plan \| Restricted Stock Units (RSUs) \| Maximum \| Performance Based Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target RSUs granted range				50.00%
2014 Director Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized plan extension period			10 years
Number of additional shares authorized (in shares)			200,000
Number of shares authorized (in shares)			350,000
Common stock, capital shares reserved for future issuance (in shares)					185,980
2014 Director Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock outstanding (in shares)					4,620	8,400
Maximum number of shares granted to any individual (in shares)				12,000
Number of shares issued to any individual (in shares)				4,000
Restricted stock issuable to eligible Board of Directors members annually (in shares)				2,400
2014 Director Plan \| Restricted Stock \| Share-Based Payment Arrangement, Nonemployee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued under the plan (in shares)	4,620	16,800
Shares issued, price per share (in dollars per share)	$ 153.81	$ 43.22
2014 Director Plan \| Restricted Stock \| Vesting of First Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				50.00%
2014 Director Plan \| Restricted Stock \| Vesting of Second Anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage				50.00%