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Share-Based Compensation - Schedule of Information with Respect to all Outstanding Restricted Stock (Parenthetical) (Detail) | 9 Months Ended
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Sep. 30, 2016 shares
Restricted Stock Units [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Vested stock settled in cash | 9,200

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- Definition Share based compensation arrangement by share based payment awards equity instruments vested settled in cash. + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardsEquityInstrumentsVestedSettledInCash
Namespace Prefix: | ceco_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |