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Goodwill And Other Intangible Assets (Narrative) (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Impairment Charges [Line Items]    
Goodwill impairment   $ (83,350,000)
Goodwill impairment for tax deductible purpose   8,900,000
Health Education [Member]
   
Impairment Charges [Line Items]    
Goodwill impairment (41,871,000) (41,871,000)
Fair values of indefinite-lived carrying value charges 1,000,000  
Art & Design [Member]
   
Impairment Charges [Line Items]    
Goodwill impairment $ (41,479,000) $ (41,479,000)