Share-Based Compensation - Schedule of Restricted Stock Units to be Settled in Cash (Detail) (Restricted Stock Units to be Settled in Cash [Member]) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Restricted Stock Units to be Settled in Cash [Member]
Schedule Of Summary Of Restricted Stock Unit Activity [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
Stock Units to be Settled in Cash, Vested
Stock Units to be Settled in Cash, Forfeited	(448)
Outstanding as of September 30, 2013, Stock Units to be Settled in Cash	2,490

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