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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of grants of share-based awards | The following grants of share-based awards were made in 2020 under the 2005 Incentive Plan:
Date of Grant |  |  | Shares/ Units |  |  | Grant Date Fair Value Per Share/Unit |  | Vesting Period
January 2, 2020 (1) |  |  | 369,938 |  |  |  |  | $ | 9.63 |  |  |  | 33% per year over three years
January 2, 2020 (2) |  |  | 369,938 |  |  |  |  | $ | 13.15 |  |  |  | 100% on January 2, 2023
January 2, 2020 (3) |  |  | 5,679 |  |  |  |  | $ | 9.63 |  |  |  | 100% on January 1, 2022
April 1, 2020 (3) |  |  | 43,351 |  |  |  |  | $ | 1.64 |  |  |  | 100% on January 1, 2022
July 1, 2020 (3) |  |  | 19,407 |  |  |  |  | $ | 3.47 |  |  |  | 100% on January 1, 2022
October 1, 2020 (3) |  |  | 24,831 |  |  |  |  | $ | 2.41 |  |  |  | 100% on January 1, 2022
December 10, 2020 (4) |  |  | 204,546 |  |  |  |  | $ | 4.40 |  |  |  | 100% on December 10, 2021
(1)Reflects grants of restricted stock to our executive officers and select management employees. (2)Reflects grants of PSUs to our executive officers and select management employees. These awards when vested can only be settled in shares of our common stock. (3)Reflects grants of restricted stock to certain independent members of our Board who have elected to take their quarterly fees in stock in lieu of cash. (4)Reflects annual equity grants to each independent member of our Board.
Summary of information about restricted stock | The following table summarizes information about our restricted stock:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| Shares |  | Grant Date Fair Value (1) |  | Shares |  | Grant Date Fair Value (1) |  | Shares |  | Grant Date Fair Value (1)
Awards outstanding at beginning of year | 1,173,045 |  |  | $ | 6.81 |  |  | 1,320,989 |  |  | $ | 7.40 |  |  | 1,579,218 |  |  | $ | 7.63 |
Granted | 667,752 |  |  | 7.06 |  |  | 846,835 |  |  | 6.02 |  |  | 614,286 |  |  | 7.46 |
Vested (2) | (631,498) |  |  | 7.52 |  |  | (993,361) |  |  | 6.92 |  |  | (823,310) |  |  | 7.88 |
Forfeited | (32,348) |  |  | 5.41 |  |  | (1,418) |  |  | 8.82 |  |  | (49,205) |  |  | 7.62 |
Awards outstanding at end of year | 1,176,951 |  |  | $ | 6.61 |  |  | 1,173,045 |  |  | $ | 6.81 |  |  | 1,320,989 |  |  | $ | 7.40 |
(1)Represents the weighted average grant date fair value, which is based on the quoted closing market price of our common stock on the trading day prior to the date of grant. (2)Total fair value of restricted stock that vested during the years ended December 31, 2020, 2019 and 2018 was $5.4 million, $6.5 million and $6.4 million, respectively.
Summary of information about equity PSU awards | The following table summarizes information about our equity PSU awards:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| Units |  | Grant Date Fair Value (1) |  | Units |  | Grant Date Fair Value (1) |  | Units |  | Grant Date Fair Value (1)
Equity PSU awards outstanding at beginning of year | 1,565,044 |  |  | $ | 10.17 |  |  | 1,006,360 |  |  | $ | 11.76 |  |  | 613,665 |  |  | $ | 12.64 |
Granted | 369,938 |  |  | 13.15 |  |  | 688,540 |  |  | 7.60 |  |  | 449,271 |  |  | 10.44 |
Vested | (589,335) |  |  | 12.64 |  |  | — |  |  | — |  |  | — |  |  | — |
Forfeited | (48,521) |  |  | 7.60 |  |  | (129,856) |  |  | 8.91 |  |  | (56,576) |  |  | 10.83 |
Equity PSU awards outstanding at end of year | 1,297,126 |  |  | $ | 9.99 |  |  | 1,565,044 |  |  | $ | 10.17 |  |  | 1,006,360 |  |  | $ | 11.76 |
(1)Represents the weighted average grant date fair value, which is determined using a Monte Carlo simulation model.

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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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- Definition Tabular disclosure of the number and weighted-average grant date fair value for outstanding performance shares. + 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) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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