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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2020
Stock-Based Compensation [Abstract] |
Disclosure of restricted stock award activity | The following tables summarize our restricted stock award activity for the three and nine months ended September 30, 2020 and 2019.
| Three Months Ended September 30, 2020
| Number of Shares of Restricted Stock Awards (in thousands) |  | Weighted Average Grant Date Fair Value
Unvested at beginning of period | 59.3 |  |  | $ | 20.87 |
Granted | — |  |  | — |
Vested | (21.1) |  |  | 20.64 |
Forfeited | — |  |  | — |
Outstanding (unvested) at end of period | 38.2 |  |  | $ | 20.99 |
| Three Months Ended September 30, 2019
| Number of Shares of Restricted Stock Awards (in thousands) |  | Weighted Average Grant Date Fair Value
Unvested at beginning of period | 58.5 |  |  | $ | 19.83 |
Granted | 5.0 |  |  | 20.38 |
Vested | (15.2) |  |  | 18.60 |
Forfeited | — |  |  | — |
Outstanding (unvested) at end of period | 48.3 |  |  | $ | 20.28 |
| Nine Months Ended September 30, 2020
| Number of Shares of Restricted Stock Awards (in thousands) |  | Weighted Average Grant Date Fair Value
Unvested at beginning of period | 52.1 |  |  | $ | 20.55 |
Granted | 60.2 |  |  | 20.84 |
Vested | (73.6) |  |  | 20.59 |
Forfeited | (0.5) |  |  | 19.32 |
Outstanding (unvested) at end of period | 38.2 |  |  | $ | 20.99 |
| Nine Months Ended September 30, 2019
| Number of Shares of Restricted Stock Awards (in thousands) |  | Weighted Average Grant Date Fair Value
Unvested at beginning of period | 26.5 |  |  | $ | 21.31 |
Granted | 92.5 |  |  | 19.47 |
Vested | (70.2) |  |  | 19.63 |
Forfeited | (0.5) |  |  | 17.11 |
Outstanding (unvested) at end of period | 48.3 |  |  | $ | 20.28 |

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- Definition Stock-Based Compensation [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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