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Equity-Based Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity-Based Incentive Plans |
Schedule of Restricted Stock Units Award Activity | A summary of the company’s RSU activity and outstanding RSUs as of December 31, 2023, are presented below (dollars in thousands except grant date fair value):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Weighted | ​ | Aggregate | ​ | ​ | ​
​ | Number | ​ | Average Grant | ​ | Intrinsic | ​ | Unrecognized
​ | of RSUs | ​ | Date Fair Value | ​ | Value | ​ | Compensation
Outstanding RSUs as of January 1, 2021 | 1,698,579 | ​ | $ | 31.44 | ​ | $ | 62,627 | ​ | $ | 35,821
Granted | 627,973 | ​ | ​ | 59.38 | ​ | ​ | ​ | ​ | ​ | ​
Vested | (895,706) | ​ | ​ | 32.30 | ​ | ​ | ​ | ​ | ​ | ​
Forfeited | (82,588) | ​ | ​ | 32.47 | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2021 | 1,348,258 | ​ | $ | 43.82 | ​ | $ | 83,686 | ​ | $ | 39,657
Granted | 481,926 | ​ | ​ | 98.29 | ​ | ​ | ​ | ​ | ​ | ​
Vested | (786,622) | ​ | ​ | 37.38 | ​ | ​ | ​ | ​ | ​ | ​
Forfeited | (70,011) | ​ | ​ | 46.82 | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2022 | 973,551 | ​ | $ | 71.80 | ​ | $ | 94,765 | ​ | $ | 44,394
Granted | 433,810 | ​ | ​ | 108.95 | ​ | ​ | ​ | ​ | ​ | ​
Vested | (517,041) | ​ | ​ | 64.03 | ​ | ​ | ​ | ​ | ​ | ​
Forfeited | (40,829) | ​ | ​ | 78.70 | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2023 (nonvested) | 849,491 | ​ | $ | 99.13 | ​ | $ | 101,480 | ​ | $ | 43,073
Schedule of Performance Period Transition Awards | The Compensation Committee granted the following three-year performance period awards and transition awards, which have been earned and have or will be issued as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Maximum | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Shares That | ​ | Award | ​ | ​ | ​ | ​
​ | ​ | Could Be Issued | ​ | Earned | ​ | Award Issued/Issuable
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 2020 LTIP Award: | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three-year performance period award | 405,922 | ​ | 356,845 | ​ | 356,845 | ​ | March 2023
​ | Two-year performance period transition award | 9,764 | ​ | 8,300 | ​ | 8,300 | ​ | March 2022
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 2021 LTIP Award: | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three-year performance period award | 360,189 | ​ | 324,173 | ​ | 324,173 | ​ | March 2024
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 2022 LTIP Award: | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three-year performance period award | 249,759 | ​ | * | ​ | * | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 2023 LTIP Award: | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three-year performance period award | 193,946 | ​ | * | ​ | * | ​ | ​
​ | Two-year performance period transition award | 5,517 | ​ | * | ​ | * | ​ | ​
​ | One-year performance period transition award | 3,678 | ​ | 2,759 | ​ | 2,759 | ​ | March 2024
* | Not yet earned as performance period not complete.

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