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Restructuring Charges - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Restructuring And Related Activities [Abstract]
Accrual for severance and related charges	$ 4.6	$ 7.8
Long term amount	2.0	2.7
Accrued retention bonuses	0.9
Gross remaining lease obligations	$ 78.0

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- Definition

Expected Remaining Lease Obligations

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No definition available.

+ Details

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- Definition

Retention Bonuses Accrued In Association With Restructuring

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No definition available.

+ Details

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Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
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- Definition

Severance accrual long term portion.

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No definition available.

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Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The amount of severance related costs expected to be paid in the next fiscal year related to restructuring actions.

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No definition available.

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Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Details

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