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, 2013
Property Subject to or Available for Operating Lease [Line Items]
Operating Subleases, 2014	$ 4,945
Operating Subleases, 2015	6,114
Operating Subleases, 2016	4,866
Operating Subleases, 2017	4,696
Operating Subleases, 2018	1,356
Operating Subleases, 2019 and thereafter	1,513
Operating Subleases, Total	23,490
Continuing Operations [Member]
Property Subject to or Available for Operating Lease [Line Items]
Operating Subleases, 2014	2,324
Operating Subleases, 2015	2,939
Operating Subleases, 2016	1,649
Operating Subleases, 2017	1,577
Operating Subleases, 2018	1,356
Operating Subleases, 2019 and thereafter	1,513
Operating Subleases, Total	11,358
Discontinued Operations [Member]
Property Subject to or Available for Operating Lease [Line Items]
Operating Subleases, 2014	2,621
Operating Subleases, 2015	3,175
Operating Subleases, 2016	3,217
Operating Subleases, 2017	3,119
Operating Subleases, 2018
Operating Subleases, 2019 and thereafter
Operating Subleases, Total	$ 12,132

Amount of minimum sublease rentals to be received by the seller-lessee for all operating leases.

No definition available.

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Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee after the fifth fiscal year.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesThereafter
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee in the next five fiscal years.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinFiveYears
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee in the next four fiscal years.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinFourYears
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee in the next fiscal year.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinOneYear
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee in the next three fiscal years.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinThreeYears
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of minimum sublease rentals to be received by the seller-lessee in the next two fiscal years.

No definition available.

Name:	ceco_FutureMinimumSubleaseRentalsUnderOperatingLeasesWithinTwoYears
Namespace Prefix:	ceco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration