Goodwill And Other Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	9 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Sep. 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		1,000,000
Art & Design [Member]
Impairment Charges [Line Items]
Goodwill impairment		$ (41,479,000)	$ (41,479,000)