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Asset Impairments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2014
Property and Equipment [Member]
Sep. 30, 2014
Royalty Rate [Member]
Sep. 30, 2014
Discount Rate [Member]
Sep. 30, 2014
Le Cordon Bleu Trade Name [Member]
Sep. 30, 2014
Sanford-Brown Trade Name [Member]
Impairment Charges [Line Items]            
Determining fair value of discount rates         32.00% 23.00%
Royalty rates         3.50% 0.50%
Fair value terminal growth rates         2.00% 3.00%
Impairment charge         $ 1.5 $ 1.5
Fair value of impairment charge         18.4 2.4
Basis point change in royalty rate 50          
Change in fair value     4.8 0.6    
Basis point change in discount rate 100          
Asset impairment charges   $ 11.3