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Credit Agreement - Schedule of U.S. Credit Agreement (Parenthetical) (Detail) (USD $)	Dec. 31, 2014	Oct. 31, 2014	Dec. 31, 2013
Line of Credit Facility [Line Items]
Letter of credit collateralized of restricted cash	$ 11,600,000ceco_RestrictedCashAndInvestmentsForSecuritizationForLettersOfCredit		$ 12,600,000ceco_RestrictedCashAndInvestmentsForSecuritizationForLettersOfCredit
Letters of credit sub limited	120,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity	120,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Letter of credit [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding	1,300,000us-gaap_LettersOfCreditOutstandingAmount / us-gaap_ShortTermDebtTypeAxis = us-gaap_LetterOfCreditMember
Letters of credit sub limited	$ 20,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_ShortTermDebtTypeAxis = us-gaap_LetterOfCreditMember

X

- Definition

Restricted Cash And Investments For Securitization For Letters Of Credit

+ References

No definition available.

+ Details

Name:	ceco_RestrictedCashAndInvestmentsForSecuritizationForLettersOfCredit
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

X

- Details

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

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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

X

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: