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Segment Reporting - Additional Information (Detail)	Sep. 30, 2015
CTU [Member]
Segment Reporting Information [Line Items]
Students enrolled expressed as percentage of enrollment	56.00%
CTU [Member] | Fully Online [Member]
Segment Reporting Information [Line Items]
Percentage of enrollment	91.00%
AIU [Member]
Segment Reporting Information [Line Items]
Students enrolled expressed as percentage of enrollment	30.00%
AIU [Member] | Fully Online [Member]
Segment Reporting Information [Line Items]
Percentage of enrollment	92.00%

X

- Definition

Percentage of enrollment.

+ References

No definition available.

+ Details

Name:	ceco_PercentageOfEnrollment
Namespace Prefix:	ceco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of student enrollment for a specific group of the total entity.

+ References

No definition available.

+ Details

Name:	ceco_PercentageOfStudentEnrollment
Namespace Prefix:	ceco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- 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_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ceco_CTUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=ceco_FullyOnlineProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=ceco_AIUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: