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Discontinued Operations - Combined Summary Results of Operations for Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Revenue $ 1,295 $ 42,868 [1] $ 55,127
(Loss) income before income tax (12,200) 19,162 [1] (9,292)
Income tax benefit (4,310) (2,672) [1] (3,395)
(Loss) income from discontinued operations, net of tax $ (7,890) $ 21,834 [1] $ (5,897)
[1] During the year ended December 31, 2011, we completed the sale of our Istituto Marangoni schools in Milan, Paris and London. As a result of that transaction we recorded a pretax gain of approximately $27.1 million. The income tax benefit for fiscal 2011 included $0.3 million of income tax expense related to this sale. The tax gain related to this transaction was significantly less than the gain reflected within the income before income tax for fiscal 2011 due to the $20.2 million of goodwill which was allocated to the remainder of the International reporting unit for book purposes, but which was included in the net assets sold for purposes of calculating the taxable gain.