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Discontinued Operations - Summary Results of Operations for Discontinued Operations (Parenthetical) (Detail) (USD $) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract] |  |  |  |  |  |  |  |
Benefit from income taxes | $ 0 | [1],[2] | $ 30,450,000 | [1],[2] | $ 0 | [1],[2] | $ 20,477,000 | [1],[2]
Income tax expense recorded in discontinued operations |  |  | $ 39,900,000 |  |  |  |  |
[1] | Due to the valuation allowance against our net deferred taxes, there is no income tax benefit reported for the quarter and year to date ended September 30, 2014.
[2] | Third quarter of 2013 included $39.9 million of income tax expense recorded as a result of the decision to commit to a plan of sale for the International Schools segment.

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- Definition Income tax expense recorded due to a change in management's assertion regarding investment in foreign subsidiaries, including the tax effect of the difference in basis for financial reporting purposes versus tax reporting. + References No definition available. + Details
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- Definition Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e38679-109324 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 + Details
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