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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 | $ 2.3 us-gaap_LossContingencyAccrualAtCarryingValue |  | $ 20.3 us-gaap_LossContingencyAccrualAtCarryingValue |  |  |  |  |
Payment for legal settlement | 17.0 us-gaap_PaymentsForLegalSettlements |  |  |  |  |  |  |
Number of OIG Findings |  |  |  | 3 ceco_NumberOfOigFindings |  |  |  |
Number of documentation of attendance of students enrolled in CTU's |  |  |  | 1 ceco_CampusNumberWithDocumentationFindingByOfficeOfInspectorGeneral |  |  |  |
Number of calculation of returns of Title IV Program funds |  |  |  | 1 ceco_CampusNumberWithCalculationFindingByOfficeOfInspectorGeneral |  |  |  |
Surrett [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of alleged claims for equitable relief |  |  |  |  |  |  | 2 ceco_NumberOfAllegedClaimsForEquitableRelief / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember |
Number of claims added for money damages |  |  |  |  |  | 2 ceco_NumberOfClaimsAddedForMoneyDamages / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember |  |
Number of students in class |  | 2,600 ceco_NumberOfStudentsInClass / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember |  |  |  |  |  |
Opt-out period expiration date | 2011-06-20 |  |  |  |  |  |  |
Number of individuals WCI file motion to compel arbitration |  |  |  |  | 1,062 ceco_NumberOfIndividualsFileMotionToCompelArbitration / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_SurrettMember |  |  |
False Claims Act [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Number of former employees who filed complaint |  |  |  |  |  |  |  | 4 ceco_NumberOfFormerEmployeesWhoFiledComplaint / us-gaap_LossContingenciesByNatureOfContingencyAxis = ceco_FalseClaimsActLawsuitMember
OIG Audit [Member] |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |
Potential liability related to audit | $ 0.8 us-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
Name: | ceco_NumberOfClaimsAddedForMoneyDamages
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
Name: | us-gaap_LossContingenciesLineItems
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 + Details
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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
Name: | us-gaap_LossContingencyRangeOfPossibleLossMaximum
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
Name: | us-gaap_PaymentsForLegalSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |