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Equity Awards | 3 Months Ended
--- | ---
Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Equity Awards | Equity Awards The following table sets forth the amount of stock-based compensation expense recorded in each of the expense line items for the three months ended March 31, 2018 and 2019 (in thousands):
| For the three months ended March 31,
| 2018 |  | 2019
Instructional and support costs | $ | 620 |  |  | $ | 858 |
General and administration | 2,068 |  |  | 1,673 |
Merger and integration costs | — |  |  | 479 |
Stock-based compensation expense included in operating expense | 2,688 |  |  | 3,010 |
Tax benefit | 752 |  |  | 759 |
Stock-based compensation expense, net of tax | $ | 1,936 |  |  | $ | 2,251 |
During the three months ended March 31, 2018 and 2019, the Company recognized a tax windfall related to share-based payment arrangements of approximately $1.2 million and $1.4 million, respectively, which was recorded as an adjustment to the provision for income taxes.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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