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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Sep. 30, 2014
Impairment Charges [Line Items] |  |  |  |  |  |  |
Amortization expense from continuing operations |  |  | $ 800,000 us-gaap_AmortizationOfIntangibleAssets | $ 1,200,000 us-gaap_AmortizationOfIntangibleAssets | $ 1,300,000 us-gaap_AmortizationOfIntangibleAssets |  |
Trade name impairment charge | 11,600,000 us-gaap_GoodwillAndIntangibleAssetImpairment | 10,000,000 us-gaap_GoodwillAndIntangibleAssetImpairment | 36,209,000 us-gaap_GoodwillAndIntangibleAssetImpairment | 22,691,000 us-gaap_GoodwillAndIntangibleAssetImpairment | 127,007,000 us-gaap_GoodwillAndIntangibleAssetImpairment |  |
Fair value of trade name impairment charge |  |  | 9,819,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 12,817,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  | 9,819,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |
Percentage change in discount rate |  |  | 1.00%ceco_PercentageChangeInDiscountRate |  |  |  |
Discount Rate [Member] |  |  |  |  |  |  |
Impairment Charges [Line Items] |  |  |  |  |  |  |
Change in fair value |  |  | 100,000 ceco_FairValueChangeInAmount / us-gaap_StatementBusinessSegmentsAxis = ceco_DiscountRateMember |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Impairment Charges [Line Items] |  |  |  |  |  |  |
Estimated useful lives of intangible assets, in years |  |  |  | 1 year |  |  |
Sanford-Brown Trade Name [Member] |  |  |  |  |  |  |
Impairment Charges [Line Items] |  |  |  |  |  |  |
Determining fair value of discount rates |  |  | 25.00%us-gaap_FairValueInputsDiscountRate / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember |  |  |  |
Royalty rates |  |  | 0.50%ceco_RoyaltyRateForTradeNameFairValueTesting / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember |  |  |  |
Fair value terminal growth rates |  |  | 2.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember |  |  |  |
Trade name impairment charge |  |  |  |  |  | 700,000 us-gaap_GoodwillAndIntangibleAssetImpairment / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember | 1,500,000 us-gaap_GoodwillAndIntangibleAssetImpairment / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember
Fair value of trade name impairment charge |  |  | $ 1,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember |  |  | $ 1,700,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = ceco_SanfordBrownTradeNameMember |

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- Definition The change in fair value amounts related to sensitivity analysis of fair value calculations. + References No definition available. + Details
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- Definition The percentage change in discount rates related to sensitivity analysis of fair value calculations. + References No definition available. + Details
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- Definition Royalty rate used to determine fair value of trade names. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Percentage of assumed long-term growth in revenues, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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