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v2.4.0.6

Discontinued Operations - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2012
Changes In Business And Other Matters [Line Items] |
Lease expiration year | 2019

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- Details
Name: | ceco_ChangesInBusinessAndOtherMattersLineItems
Namespace Prefix: | ceco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Lease obligation expiration year + References No definition available. + Details
Name: | ceco_LeaseExpirationYear
Namespace Prefix: | ceco_
Data Type: | us-types:dateStringItemType
Balance Type: | na
Period Type: | duration