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Restructuring Charges - Restructuring Charges by Segment (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Restructuring And Related Cost [Line Items]      
Severance and related expenses [1],[2] $ 507 $ 24,085 $ 3,979
University Group [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 84 1,078 647
Corporate and Other [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 388 4,631 1,087
Subtotal [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 472 5,709 1,734
Culinary Arts [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 5 8,229 455
Transitional Group [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 30 10,147 1,790
CTU [Member] | University Group [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses 18 405 544
AIU [Member] | University Group [Member]      
Restructuring And Related Cost [Line Items]      
Severance and related expenses $ 66 $ 673 $ 103
[1] Includes charges related to COBRA and outplacement services which are assumed to be completed by the third month following an employee’s departure.
[2] Severance charges will result in future cash expenditures through 2018.