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Restructuring Charges - Restructuring Charges by Segment (Detail) - Jun. 30, 2015 - USD ($)
$ in Thousands
Total
Total
Restructuring and Related Cost [Abstract]    
Severance and related expenses [1],[2] $ 12,636 $ 13,380
CTU [Member]    
Restructuring and Related Cost [Abstract]    
Severance and related expenses 275 288
AIU [Member]    
Restructuring and Related Cost [Abstract]    
Severance and related expenses 339 339
University Group [Member]    
Restructuring and Related Cost [Abstract]    
Severance and related expenses 614 627
Corporate and Other [Member]    
Restructuring and Related Cost [Abstract]    
Severance and related expenses 4,318 4,318
Transitional Group [Member]    
Restructuring and Related Cost [Abstract]    
Severance and related expenses $ 7,704 $ 8,435
[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 payments will result in future cash expenditures through 2018.