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Share-Based Compensation - Summary of Total Stock Based Compensation Expense (Parenthetical) (Detail) - Former Chief Executive Officer [Member] $ in Millions | 12 Months Ended
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Dec. 31, 2015 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
Forfeitures related stock-based compensation expense | $ 1.5
Separation agreement payment | $ 2.5

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- Definition Forfeitures related stock based compensation expense. + References No definition available. + Details
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Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Separation agreement payment. + References No definition available. + Details
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Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |