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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 |  |  |

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