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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Stock-Based Compensation | Stock-Based Compensation The following table summarizes our stock-based compensation expense for the three months ended March 31, 2024 and 2023.
|  |  |  | Three Months Ended
|  |  |  | March 31,
(in millions) |  |  |  |  |  | 2024 |  | 2023
Stock-based compensation expenses (restricted share units (“RSUs”) and performance-based RSUs (“PRSUs”)), before income taxes |  |  |  |  |  | $ | 7.2 |  |  | $ | 7.8 |
Tax benefit |  |  |  |  |  | (0.2) |  |  | (0.4) |
Stock-based compensation expense, net of tax |  |  |  |  |  | $ | 7.0 |  |  | $ | 7.4 |
As of March 31, 2024, total unrecognized compensation cost related to non-vested RSUs and PRSUs was $48.2 million, which is expected to be recognized over a weighted average period of 2.1 years. RSUs and PRSUs The following table summarizes activity for the three months ended March 31, 2024, of RSUs and PRSUs issued to our employees.
|  | Activity |  | Weighted Average Per Share Grant Date Fair Market Value
Non-vested as of December 31, 2023 |  | 2,781,836 |  |  | $ | 21.10 |
Granted: |  |  |  |
RSUs |  | 1,547,171 |  |  | 12.43 |
PRSUs |  | 787,035 |  |  | 12.43 |
Vested: |  |  |  |
RSUs |  | (861,830) |  |  | 21.62 |
PRSUs |  | (410,304) |  |  | 22.07 |
Forfeitures: |  |  |  |
RSUs |  | (13,404) |  |  | 20.17 |
PRSUs |  | (176,427) |  |  | 19.21 |
Non-vested as of March 31, 2024 |  | 3,654,077 |  |  | 15.43 |

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