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Share-Based Payments (Tables) | 12 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement [Abstract] |
Summary of Grants, Exchanges and Forfeitures of Restricted Stock and RSUs | The following table summarizes the grants, vesting and forfeitures of restricted common stock and RSUs during 2019, 2018 and 2017:
| Type |  | Restricted Stock |  | RSUs |  | Grant Date Fair Value ($ in thousands)
Outstanding at December 31, 2016 |  | 150,110 |  |  | 1,703,775 |  |  |
| Grant |  | 27,700 |  |  | 912,916 |  |  | 17,496 |
| Vested |  | (72,249 | ) |  | (938,541 | ) |  | N/A |
| Forfeiture |  | — |  |  | (45,404 | ) |  | N/A |
Outstanding at December 31, 2017 |  | 105,561 |  |  | 1,632,746 |  |  |
| Grant |  | 28,070 |  |  | 1,006,800 |  |  | 19,148 |
| Vested |  | (67,934 | ) |  | (739,388 | ) |  | N/A |
| Forfeiture |  | — |  |  | (47,201 | ) |  | N/A |
Outstanding at December 31, 2018 |  | 65,697 |  |  | 1,852,957 |  |  |
| Grant |  | 27,245 |  |  | 1,069,202 |  |  | 20,483 |
| Vested |  | (67,586 | ) |  | (877,261 | ) |  | N/A |
| Forfeiture |  | — |  |  | (37,543 | ) |  | N/A |
Outstanding at December 31,2019 |  | 25,356 |  |  | 2,007,355 |  |  |
Below is a summary of restricted stock and RSU vesting dates as of December 31, 2019:
Vesting Year | Restricted Stock |  | RSU |  | Total Awards
2020 | 25,356 |  |  | 964,829 |  |  | 990,185 |
2021 | — |  |  | 686,126 |  |  | 686,126 |
2022 | — |  |  | 356,400 |  |  | 356,400 |
Total | 25,356 |  |  | 2,007,355 |  |  | 2,032,711 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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