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Segment Reporting - Summary Financial Information by Reporting Segment (Parenthetical) (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
CTU [Member]
Segment Reporting Information [Line Items]
Bad debt increase in percentage of revenue	0.30%	2.40%
AIU [Member]
Segment Reporting Information [Line Items]
Bad debt increase in percentage of revenue	1.40%	1.70%

X

- Definition

Bad debt increase as percentage of revenue.

+ References

No definition available.

+ Details

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Namespace Prefix:	ceco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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_SubsegmentsAxis=ceco_CTUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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