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

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- 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

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