Share-Based Compensation - Schedule of Restricted Stock Units to be Settled in Cash (Detail) (Restricted Stock Units to be Settled in Cash [Member])	12 Months Ended
Dec. 31, 2013
Restricted Stock Units to be Settled in Cash [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding as of December 31, 2012, Stock Units to be Settled in Cash
Stock Units to be Settled in Cash, Granted	2,938,283
Stock Units to be Settled in Cash, Vested
Stock Units to be Settled in Cash, Forfeited	(649,368)
Outstanding as of September 30, 2013, Stock Units to be Settled in Cash	2,288,915

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan) to be settled in cash.

No definition available.

Name:	ceco_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodSettledInCash
Namespace Prefix:	ceco_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration