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Restructuring Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Restructuring and Related Activities [Abstract]
Accrual for severance and related charges	$ 1.7ceco_SeveranceAccrualShortTermPortionRestructuring	$ 1.7ceco_SeveranceAccrualShortTermPortionRestructuring
Long term amount	1.0ceco_SeveranceAccrualLongTermPortion	1.5ceco_SeveranceAccrualLongTermPortion
Accrued retention bonuses	0.7ceco_RetentionBonusesAccruedInAssociationWithRestructuring
Amount recorded ratably over the period retained	0.9ceco_RetentionBonusesAmountRecordedDuringPeriod
Gross remaining lease obligations	$ 12.0ceco_PresentValueOfRemainingLeaseObligation
Lease expiration teach out campuses	2021

X

- Definition

The longest lease term expiration for all campuses that are scheduled to be taught out as of the reporting date.

+ References

No definition available.

+ Details

Name:	ceco_LeaseExpirationTeachOutCampuses
Namespace Prefix:	ceco_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The present value of the estimated charge related to remaining lease obligations for lease exits offset with an estimated amount for sublease income.

+ References

No definition available.

+ Details

Name:	ceco_PresentValueOfRemainingLeaseObligation
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of retention bonus accrued for as of the balance sheet date as part of restructuring actions that is due to paid within one year of the balance sheet date.

+ References

No definition available.

+ Details

Name:	ceco_RetentionBonusesAccruedInAssociationWithRestructuring
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of retention bonus expensed during the current reporting period as part of restructuring actions.

+ References

No definition available.

+ Details

Name:	ceco_RetentionBonusesAmountRecordedDuringPeriod
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount of severance related costs expected to be paid in greater than one year from the reporting date related to restructuring actions.

+ References

No definition available.

+ Details

Name:	ceco_SeveranceAccrualLongTermPortion
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of severance related costs expected to be paid in the next fiscal year related to restructuring actions.

+ References

No definition available.

+ Details

Name:	ceco_SeveranceAccrualShortTermPortionRestructuring
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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