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Basis of Presentation - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 Segment Cmp
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	1

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: