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Equity Awards (Tables) | 6 Months Ended
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Jun. 30, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of stock-based compensation expense | The following table sets forth the amount of stock-based compensation expense recorded in each of the expense line items for the three and six months ended June 30, 2019 and 2020 (in thousands):
| For the three months ended June 30, |  | For the six months ended June 30,
| 2019 |  | 2020 |  | 2019 |  | 2020
Instructional and support costs | $ | 1,017 |  |  | $ | 1,356 |  |  | $ | 1,875 |  |  | $ | 2,386 |
General and administration | 2,138 |  |  | 2,503 |  |  | 3,811 |  |  | 4,498 |
Merger and integration costs | 411 |  |  | — |  |  | 890 |  |  | — |
Stock-based compensation expense included in operating expense | 3,566 |  |  | 3,859 |  |  | 6,576 |  |  | 6,884 |
Tax benefit | 923 |  |  | 993 |  |  | 1,682 |  |  | 1,770 |
Stock-based compensation expense, net of tax | $ | 2,643 |  |  | $ | 2,866 |  |  | $ | 4,894 |  |  | $ | 5,114 |

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