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Restructuring Charges - Restructuring Charges by Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2016
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses | [1] | $ 1,898 | $ 507
University Group [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  | 1,865 | 84
Corporate and Other [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  | 33 | 388
Subtotal [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  | 1,898 | 472
All Other Campuses [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  |  | 35
CTU [Member] | University Group [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  | 782 | 18
AIU [Member] | University Group [Member] |  |  |
Restructuring And Related Cost [Line Items] |  |  |
Severance and related expenses |  | $ 1,083 | $ 66
[1] | Includes charges related to COBRA and outplacement services which are assumed to be completed by the third month following an employee’s departure.

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