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Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Activity Related to Restricted Stock Granted under Company's Incentive Plan | A summary of the activity related to restricted stock granted under the Company’s Incentive Plan since December 31, 2017 is as follows:
|  | Total Shares |  |  | Weighted Average Grant Date Fair Value per Share |
Outstanding as of December 31, 2017 |  |  | 776 |  |  | $ | 49.16 |
Granted |  |  | 163 |  |  | $ | 92.34 |
Vested |  |  | (384 | ) |  | $ | 65.57 |
Forfeited, canceled or expired |  |  | (94 | ) |  | $ | 71.68 |
Outstanding as of September 30, 2018 |  |  | 461 |  |  | $ | 63.27 |
Summary of Activity Related to Stock Options Granted under Company's Incentive Plan | During the nine months ended September 30, 2018, no options were granted. A summary of the activity since December 31, 2017 related to stock options granted under the Company’s Incentive Plan is as follows:
|  | Summary of Stock Options Outstanding |
|  | Total Shares |  |  | Weighted Average Exercise Price per Share |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value ($)(1) |
Outstanding as of December 31, 2017 |  |  | 694 |  |  | $ | 17.31 |  |  |  |  |  |  |  |  |
Granted |  |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (130 | ) |  | $ | 16.07 |  |  |  |  |  |  |  |  |
Forfeited, canceled or expired |  |  | — |  |  | $ | — |  |  |  |  |  |  |  |  |
Outstanding as of September 30, 2018 |  |  | 564 |  |  | $ | 17.60 |  |  |  | 2.03 |  |  | $ | 53,657 |
Exercisable as of September 30, 2018 |  |  | 564 |  |  | $ | 17.60 |  |  |  | 2.03 |  |  | $ | 53,657 |
(1) | Aggregate intrinsic value represents the value of the Company’s closing stock price on September 28, 2018 ($112.80) in excess of the exercise price multiplied by the number of shares underlying options outstanding or exercisable, as applicable.
Share-Based Compensation Expense | Share-based Compensation Expense The table below outlines share-based compensation expense for the nine months ended September 30, 2018 and 2017 related to restricted stock and stock options granted:
|  | 2018 |  |  | 2017 |
Technical and academic services |  | $ | 1,195 |  |  | $ | 1,160 |
Counseling support and services |  |  | 3,707 |  |  |  | 3,566 |
Marketing and communication |  |  | 40 |  |  |  | 19 |
General and administrative |  |  | 2,530 |  |  |  | 2,535 |
University related expenses |  |  | 9,594 |  |  |  | 2,282 |
Share-based compensation expense included in operating expenses |  |  | 17,066 |  |  |  | 9,562 |
Tax effect of share-based compensation |  |  | (4,267 | ) |  |  | (3,825 | )
Share-based compensation expense, net of tax |  | $ | 12,799 |  |  | $ | 5,737 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: 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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