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Stock-based Compensation Plans Grants (Tables) | 6 Months Ended
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Jun. 30, 2020
Compensation Related Costs [Abstract] |
Summary of RSUs and PSUs Granted | A summary of the RSUs and PSUs granted during 2020 is presented below (units in thousands):
Grant Year |  | Award Type |  | Number of Units Awarded |  | Vesting Terms
2020 |  | RSU |  | 44 |  | Vest equally over three service periods ending in 2021, 2022, and 2023
2020 |  | RSU |  | 37 |  | Vest equally over three service periods ending in 2020, 2021, and 2022
2020 |  | PSU |  | 37 |  | Three year performance and service period ending in 2022
2020 |  | RSU |  | 12 |  | One year service period ending in 2021

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