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Quarterly Financial Summary (Unaudited) - Schedule of Quarterly Financial Summary (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule Of Quarterly Financial Summary [Line Items]
Asset impairment charges		$ 9,700				$ 1,164	$ 60,515	$ 36,141
Unused space charges	$ 22,500
Valuation allowances against deferred tax assets		109,800					109,800
Discontinued Operations Remainder Related to Teach-Out Segments [Member]
Schedule Of Quarterly Financial Summary [Line Items]
Unused space charges	4,200
University Group [Member] | AIU [Member]
Schedule Of Quarterly Financial Summary [Line Items]
Legal settlements charge	32,000					$ 32,000
Culinary Arts [Member]
Schedule Of Quarterly Financial Summary [Line Items]
Asset impairment charges	400	$ 9,000	$ 33,400	$ 9,700			35,100	10,300
Transitional Group [Member]
Schedule Of Quarterly Financial Summary [Line Items]
Asset impairment charges	$ 500			$ 1,700	$ 6,000		$ 6,100	$ 14,500

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

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-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
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