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Credit Agreement - Schedule of U.S. Credit Agreement (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012
Line of Credit Facility [Line Items]
Letter of credit collaterized of restricted cash	$ 7.4

X

- Definition

Restricted Cash And Investments For Securitization For Letters Of Credit

+ References

No definition available.

+ Details

Name:	ceco_RestrictedCashAndInvestmentsForSecuritizationForLettersOfCredit
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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