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Common Stock (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of reconciliation of changes in common shares issued | A reconciliation of the changes in common shares issued is as follows:
| Year ended December 31,
| 2018 |  | 2017
Shares issued at the beginning of the year | 60,622,986 |  |  | 59,684,669 |
Issued as restricted stock award grants | 1,539,889 |  |  | 275,029 |
Issued upon exercise of stock options | — |  |  | 663,288 |
Shares issued at the end of the year | 62,162,875 |  |  | 60,622,986 |
Schedule of restricted stock activity | Restricted stock share activity for the year ended December 31, 2018 is as follows:
Restricted Stock Shares |  | Shares |  | Weighted- Average Fair Value at Date of Grant
Non-vested at January 1, 2018 |  | 246,258 |  |  | $ | 12.24 |
Granted to employees |  | 1,287,484 |  |  | 3.67 |
RSAs converted from 2016 restricted stock units |  | 252,405 |  |  | 12.02 |
Vested |  | (578,114 | ) |  | 10.82 |
Forfeited |  | (157,661 | ) |  | 5.52 |
Non-vested at December 31, 2018 |  | 1,050,372 |  |  | $ | 3.47 |
Schedule of restricted stock unit activity | Restricted stock unit share activity for the year ended December 31, 2018 is as follows:
Restricted Stock Unit Shares |  | Shares |  | Weighted- Average Fair Value at Date of Grant
RSU share equivalents at January 1, 2018 |  | 725,331 |  |  | $ | 16.41 |
2016 RSUs converted to RSAs in 2018 |  | (252,405 | ) |  | 12.02 |
2017 share equivalents forfeited |  | (121,514 | ) |  | 19.33 |
2017 share equivalents not earned |  | (351,412 | ) |  | 18.56 |
2017 share equivalents |  | — |  |  | — |
2018 share equivalents granted |  | 407,698 |  |  | 3.95 |
2018 share equivalents forfeited |  | (105,932 | ) |  | 3.95 |
RSU share equivalents at December 31, 2018 |  | 301,766 |  |  | $ | 3.95 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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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