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Restructuring Charges - Additional Information (Detail)
$ in Millions
9 Months Ended
Sep. 30, 2016
USD ($)
Restructuring Cost And Reserve [Line Items]  
Accrual for severance and related charges $ 7.6
Long term amount 2.5
Accrued retention bonuses $ 1.5
Lease expiration teach out campuses 2023
Charges related to remaining obligations $ 34.6
Minimum [Member]  
Restructuring Cost And Reserve [Line Items]  
Gross remaining lease obligations 40.0
Maximum [Member]  
Restructuring Cost And Reserve [Line Items]  
Gross remaining lease obligations $ 50.0