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Basis of Presentation - Additional Information (Detail) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 Cmp | Jun. 30, 2018 Segment
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |
Number of reporting segments | Segment |  | 3
All Other Campuses [Member] |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |
Number of campuses completed teach out activities | Cmp | 3 |

X
- Definition The number of campuses which completed their teach-out activities for the reporting period. + References No definition available. + Details
Name: | ceco_NumberOfCampusesWhichCompletedTeachOut
Namespace Prefix: | ceco_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Organization consolidation and presentation of financial statements. + References No definition available. + Details
Name: | ceco_OrganizationConsolidationAndPresentationOfFinancialStatementsLineItems
Namespace Prefix: | ceco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ceco_AllOtherCampusesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |