Accelerated Compensation Expense

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- Definition

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

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants in Period, Potential Earning, Percentage Of Target Options Originally Granted

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Performance Target

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants in Period, Potential Earning, Percentage Of Target Options Originally Granted

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- Definition

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

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- Definition

Aggregate number of common shares reserved for future issuance.

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- Definition

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

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- Definition

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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- Definition

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

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 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

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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No definition available.

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- Definition

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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- Definition

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

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

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Weighted average remaining contractual term of outstanding stock options, 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) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Apr. 26, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated compensation expense	$ 14,900	$ 15,900	$ 5,700
Share-based compensation expense	$ 56,703	$ 59,865	$ 33,490
Stock options granted (in shares)	203,933	560,000	840,000
Compensation cost not yet recognized	$ 21,200
Average remaining contractual lives (in years)	3 years
Non-Management Trustee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	65,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period (in years)	10 years
Share-based compensation expense	$ 19,900	$ 25,100	$ 7,600
Stock options outstanding, aggregate intrinsic value	$ 209,800
Average remaining contractual lives (in years)	5 years
Compensation recognition period (in years)	3 years
Aggregate intrinsic value for stock options exercisable	$ 128,900
Performance Target, Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	77,683
Award performance period	3 years	3 years	3 years
Percentage of target options originally granted (percentage)	200.00%
Performance Target, Stock Options \| Dependent upon Meeting Certain Performance Targets with Respect to 2021, 2022, and 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)		245,000
Performance target (percentage)	125.00%	100.00%
Performance Target, Stock Options \| Dependent upon Meeting Certain Performance Targets with Respect to 2020, 2021, and 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)			770,000
Performance target (percentage)	125.00%
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 39,900	$ 37,600	$ 25,100
Compensation recognition period (in years)	2 years
Unrecognized compensation cost	$ 74,300
Performance Target, Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award performance period	3 years
Stock options granted (in shares)		37,000
Performance target (percentage)		125.00%
Grants in period (in shares)	21,985
Percentage of target options originally granted (percentage)	200.00%
Deferred Stock Units (DSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	2,425
Unrestricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	432
Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Minimum \| Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	5 years
Maximum \| Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	8 years
2021 Equity and Performance-Based Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved in connection with share-based incentive plan (in shares)				3,000,000
Number of shares available for grant (in shares)	1,724,352