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Long-Term Incentive Compensation (Tables) | 6 Months Ended
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Jun. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | The following table presents a summary of activity for stock options, service-based restricted stock awards and performance-based stock unit awards for the six months ended June 30, 2021 (in thousands):
| Stock Options |  | Service-based Restricted Stock |  | Performance-based Stock Units
Outstanding – December 31, 2020 | 530 |  |  | 1,087 |  |  | 287 |
Granted | — |  |  | 596 |  |  | 245 |
Vested | — |  |  | (597) |  |  | (70) |
Forfeited | (134) |  |  | (46) |  |  | (42) |
Outstanding – June 30, 2021 | 396 |  |  | 1,040 |  |  | 420 |
Weighted average grant date fair value (2021 awards) | $ | — |  |  | $ | 6.78 |  |  | $ | 6.84 |

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