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Weighted Average Common Shares - Additional Information (Detail) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Anti-dilutive awards excluded from computations of diluted earnings per share	0	0

X

- Definition

Shares that have anti dilutive effect on diluted net income per share.

+ References

No definition available.

+ Details

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

X

- Details

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