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Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Percentage Of Shares Issued Based On Performance Target Award

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

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

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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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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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Number of options outstanding, including both vested and non-vested options.

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Number of non-vested options forfeited.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-Based Compensation (Narrative) (Details) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended
	Feb. 28, 2019 shares	Feb. 28, 2018 executive shares	Jun. 30, 2024 USD ($) shares	Jun. 30, 2024 USD ($) shares	Feb. 28, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of executives awarded stock options \| executive		4
Remaining term of options (in years)			17,500	17,500
Options not exercised (in shares)				3 years 7 months 6 days
Incentive Award Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)					4,900,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting term (in years)				10 years
Employee Stock Option \| Incentive Award Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		80,000
Requisite service period		4 years
Nonvested options forfeited (in shares)	(10,000)
Performance-based Phantom Stock Units \| Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted "target" award (in shares)				196,712
Performance period (in years)				3 years
Maximum payout level based on "target" award (in percent)				150.00%
Restricted Phantom Stock Units \| Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted "target" award (in shares)				5,873
Performance-based And Restricted Phantom Stock Units \| Long-Term Incentive Plan 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $			$ 0.9	$ 1.7
Common stock \| Incentive Award Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)			4,830,000	4,830,000