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Leases - Schedule of Future Minimum Sublease Rental Income under Operating Leases for Continuing and Discontinued Operations (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012
--- | ---
Continuing Operations [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
2013 | $ 52
2014 |
2015 |
2016 |
2017 |
2018 and thereafter |
Total | 52
Discontinued Operations [Member] |
Property Subject to or Available for Operating Lease [Line Items] |
2013 | 2,478
2014 | 2,509
2015 | 2,555
2016 | 2,569
2017 | 2,590
2018 and thereafter |
Total | $ 12,701

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee for all operating leases. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeases
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee after the fifth fiscal year. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesThereafter
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee in the next five fiscal years. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinFiveYears
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee in the next four fiscal years. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinFourYears
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee in the next fiscal year. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinOneYear
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee in the next three fiscal years. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinThreeYears
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals to be received by the seller-lessee in the next two fiscal years. + References No definition available. + Details
Name: | ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinTwoYears
Namespace Prefix: | ceco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration