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Share-Based Compensation - Schedule of Deferred Stock Units to be Settled in Shares (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Beginning balance of Outstanding Shares | 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedNumber
Granted, Shares | 116,952 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsGrantsInPeriod
Vested, Shares | 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitVestedInPeriod
Forfeited, Shares | 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsForfeitedInPeriod
Ending balance of Outstanding Shares | 116,952 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedNumber
Beginning balance of Weighted Average Grant-Date Fair Value Per Unit | $ 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedWeightedAverageGrantDateFairValue
Granted, Weighted Average Grant-Date Fair Value Per Unit | $ 4.39 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsGrantsInPeriodWeightedAverageGrantDateFairValue
Vested, Weighted Average Grant-Date Fair Value Per Unit | $ 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsVestedWeightedAverageGrantDateFairValue
Forfeited, Weighted Average Grant-Date Fair Value Per Unit | $ 0 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedForfeitedWeightedAverageGrantDateFairValue
Ending balance of Weighted Average Grant-Date Fair Value Per Unit | $ 4.39 ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedWeightedAverageGrantDateFairValue

X
- Definition The number of equity-based deferred stock units, that were forfeited during the reporting period. + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsForfeitedInPeriod
Namespace Prefix: | ceco_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period for deferred stock units. + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsGrantsInPeriod
Namespace Prefix: | ceco_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Grants In Period Weighted Average Grant Date Fair Value + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | ceco_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Nonvested Forfeited Weighted Average Grant Date Fair Value + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedForfeitedWeightedAverageGrantDateFairValue
Namespace Prefix: | ceco_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment deferred stock units that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedNumber
Namespace Prefix: | ceco_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Nonvested Weighted Average Grant Date Fair Value + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | ceco_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share Based Compensation Arrangement By Share Based Payment Award Deferred Stock Units Vested Weighted Average Grant Date Fair Value + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitsVestedWeightedAverageGrantDateFairValue
Namespace Prefix: | ceco_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based deferred stock units that vested during the reporting period. + References No definition available. + Details
Name: | ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardDeferredStockUnitVestedInPeriod
Namespace Prefix: | ceco_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration