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Share-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Summary of share-based compensation expense | Share-based compensation expense was as follows:
| For the three months ended June 30, |  | For the six months ended June 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
Continuing operations |  |  |  |  |  |  |
Stock options, net of estimated forfeitures | $ | 1,340 |  |  | $ | 1,982 |  |  | $ | 2,163 |  |  | $ | (5,265 | )
Restricted stock awards | 3,408 |  |  | 5,279 |  |  | 5,572 |  |  | 8,449 |
Total continuing operations | $ | 4,748 |  |  | $ | 7,261 |  |  | $ | 7,735 |  |  | $ | 3,184 |
Discontinued operations |  |  |  |  |  |  |
Share-based compensation expense for discontinued operations | 106 |  |  | 427 |  |  | 269 |  |  | 747 |
Total continuing and discontinued operations | $ | 4,854 |  |  | $ | 7,688 |  |  | $ | 8,004 |  |  | $ | 3,931 |

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