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Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Apr. 22, 2011 Student	Dec. 31, 2013	Jan. 13, 2012 Findings	May 23, 2012 Members	Apr. 10, 2008 Claim	Mar. 05, 2008 Claim	Jul. 14, 2008 Employees
Loss Contingencies [Line Items]
Accrual for legal fees and settlements	$ 2.3us-gaap_LossContingencyAccrualAtCarryingValue		$ 20.3us-gaap_LossContingencyAccrualAtCarryingValue
Payment for legal settlement	17.0us-gaap_PaymentsForLegalSettlements
Number of OIG Findings				3ceco_NumberOfOigFindings
Number of documentation of attendance of students enrolled in CTU's				1ceco_CampusNumberWithDocumentationFindingByOfficeOfInspectorGeneral
Number of calculation of returns of Title IV Program funds				1ceco_CampusNumberWithCalculationFindingByOfficeOfInspectorGeneral
Surrett [Member]
Loss Contingencies [Line Items]
Number of alleged claims for equitable relief							2ceco_NumberOfAllegedClaimsForEquitableRelief / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember
Number of claims added for money damages						2ceco_NumberOfClaimsAddedForMoneyDamages / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember
Number of students in class		2,600ceco_NumberOfStudentsInClass / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember
Opt-out period expiration date	2011-06-20
Number of individuals WCI file motion to compel arbitration					1,062ceco_NumberOfIndividualsFileMotionToCompelArbitration / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember
False Claims Act [Member]
Loss Contingencies [Line Items]
Number of former employees who filed complaint								4ceco_NumberOfFormerEmployeesWhoFiledComplaint / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_FalseClaimsActLawsuitMember
OIG Audit [Member]
Loss Contingencies [Line Items]
Potential liability related to audit	$ 0.8us-gaap_LossContingencyRangeOfPossibleLossMaximum / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_OfficeOfInspectorGeneralAuditMember

X

- Definition

The number of campuses that the Office of Inspector General has identified to have findings and have calculated those amounts in regards to a legal investigation.

+ References

No definition available.

+ Details

Name:	ceco_CampusNumberWithCalculationFindingByOfficeOfInspectorGeneral
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of campuses that the Office of Inspector General has identified to have findings in regards to a legal investigation.

+ References

No definition available.

+ Details

Name:	ceco_CampusNumberWithDocumentationFindingByOfficeOfInspectorGeneral
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of alleged claims in regards to a legal matter that are filed for equitable relief.

+ References

No definition available.

+ Details

Name:	ceco_NumberOfAllegedClaimsForEquitableRelief
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of alleged claims in regards to a legal matter that are filed for money damages.

+ References

No definition available.

+ Details

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Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of former employees who filed complaint.

+ References

No definition available.

+ Details

Name:	ceco_NumberOfFormerEmployeesWhoFiledComplaint
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of individuals who have filed motions to compel arbitrations regarding certain legal matters.

+ References

No definition available.

+ Details

Name:	ceco_NumberOfIndividualsFileMotionToCompelArbitration
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The total number of findings related to the Office of Inspector General legal matter.

+ References

No definition available.

+ Details

Name:	ceco_NumberOfOigFindings
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The approximate number of members participating in a specific class action complaint.

+ References

No definition available.

+ Details

Name:	ceco_NumberOfStudentsInClass
Namespace Prefix:	ceco_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The opt-out period expiration date that has been set for a particular legal matter.

+ References

No definition available.

+ Details

Name:	ceco_OptOutPeriodExpirationDate
Namespace Prefix:	ceco_
Data Type:	us-types:dateStringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

+ Details

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Balance Type:	credit
Period Type:	duration

X

- Details

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X

- Details

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Data Type:	na
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X

- Details

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