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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Activity for Restricted Stock Awards | The following table provides a summary of activity with regard to restricted stock awards in the nine months ended September 30, 2021:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested at beginning of year |  |  | 6,228,048 |  |  | $ | 12.43 |
Granted |  |  | 3,131,949 |  |  |  | 11.20 |
Vested |  |  | (2,093,422 | ) |  |  | 13.17 |
Canceled |  |  | (264,520 | ) |  |  | 11.76 |
Unvested at end of period |  |  | 7,002,055 |  |  |  | 11.68 |
Summary of Activity for Performance-Based Restricted Stock Units | The following table provides a summary of activity with regard to Performance-Based Restricted Stock Units ("PSUs") in the nine months ended September 30, 2021:
|  | Number of Shares |  |  | Performance Period |  | Expected Vesting Date
Outstanding at beginning of year |  |  | 477,872 |  |  |  |  |
Granted |  |  | 356,740 |  |  | January 1, 2021 - December 31, 2023 |  | March 31, 2024
Outstanding at end of period |  |  | 834,612 |  |  |  |  |

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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