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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2019
Share-based Payment Arrangement [Abstract] |
Schedule of Share-Based Compensation Expense | Total share-based compensation expense, net of forfeitures, for the three and six months ended June 30, 2019 and 2018 is detailed in the following table:
| Three Months Ended June 30, |  | Six Months Ended June 30,
Income Statement Classification | 2019 |  | 2018 |  | 2019 |  | 2018
Direct cost of revenues | $ | 2,559 |  |  | $ | 2,427 |  |  | $ | 7,802 |  |  | $ | 6,206 |
Selling, general and administrative expenses | 2,698 |  |  | 3,158 |  |  | 5,130 |  |  | 5,347 |
Total share-based compensation expense | $ | 5,257 |  |  | $ | 5,585 |  |  | $ | 12,932 |  |  | $ | 11,553 |

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