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Segment Reporting - Summary Financial Information by Reporting Segment (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013 Career Colleges [Member]	Jun. 30, 2014 Culinary Arts [Member]	Jun. 30, 2013 Culinary Arts [Member]
Segment Reporting Information [Line Items]
Preliminary settlement legal matters	$ 2.2	$ 8.3
Goodwill and assets impairment charges		$ 1.7	$ 7.4	$ 2.3

X

- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration