Weighted Average Common Shares - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Anti-dilutive awards excluded from computations of diluted earnings per share	0	0

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

No definition available.

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