Share-based Awards and Cash-based Awards - Schedule of Outstanding Restricted Shares Issued to Non-employee Directors (Details) - Restricted Stock Units [Member] - shares |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|---|---|
| Awards expected to vest by period (in shares) | 698,465 | 763,688 | 1,614,722 | 3,355,917 |
| Vesting in 2022 [Member] | ||||
| Awards expected to vest by period (in shares) | 232,822 | |||
| Vesting in 2023 [Member] | ||||
| Awards expected to vest by period (in shares) | 232,822 | |||
| Vesting in 2024 [Member] | ||||
| Awards expected to vest by period (in shares) | 232,821 |
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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