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Equity Compensation Plans and Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Nonvested Stock Options Activity | The following table summarizes the restricted stock unit award activity for the years ended December 31, 2023, 2022 and 2021 (shares in thousands):
| 2023 |  | 2022 |  | 2021
|  |  | Weighted- |  |  |  | Weighted- |  |  |  | Weighted-
|  |  | Average |  |  |  | Average |  |  |  | Average
| Underlying |  | Fair Value |  | Underlying |  | Fair Value |  | Underlying |  | Fair Value
| Shares |  | of Grant |  | Shares |  | of Grant |  | Shares |  | of Grant
Outstanding at beginning of year | 435 |  |  | $ | 67.38 |  |  | 383 |  |  | $ | 71.93 |  |  | 373 |  |  | $ | 77.40 |
Performance-based grants (1) | 107 |  |  | 91.76 |  |  | 120 |  |  | 69.78 |  |  | 105 |  |  | 58.68 |
Time-based grants | 93 |  |  | 91.76 |  |  | 60 |  |  | 69.72 |  |  | 48 |  |  | 58.68 |
Performance-based vested | (211) |  |  | 65.54 |  |  | — |  |  | — |  |  | (91) |  |  | 72.70 |
Time-based vested | (45) |  |  | 69.97 |  |  | (19) |  |  | 70.33 |  |  | (19) |  |  | 67.86 |
Performance-based canceled | (10) |  |  | 72.37 |  |  | (109) |  |  | 86.86 |  |  | (18) |  |  | 72.56 |
Time-based canceled | — |  |  | — |  |  | — |  |  | — |  |  | (15) |  |  | 72.49 |
Outstanding at end of year | 369 |  |  | $ | 80.68 |  |  | 435 |  |  | $ | 67.38 |  |  | 383 |  |  | $ | 71.93 |
(1)Represents the maximum possible award. The Company’s level of achievement of the respective performance goals will result in actual vesting of between zero shares and the maximum share award.
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The Company’s net income includes the following compensation costs related to share-based compensation arrangements (in thousands):
| Year Ended December 31,
| 2023 |  | 2022 |  | 2021
Gross compensation costs: |  |  |  |  |
Restricted stock unit awards | $ | 13,674 |  |  | $ | 10,853 |  |  | $ | 5,150 |
Income tax benefits: |  |  |  |  |
Restricted stock unit awards | (605) |  |  | (1,428) |  |  | (205) |
Net compensation expense | $ | 13,069 |  |  | $ | 9,425 |  |  | $ | 4,945 |

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