XML 40 R28.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Recent Accounting Pronouncements - Additional Information (Detail) - ASU 2016-09 [Member] - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Recognition of an excess tax benefit and deficiency |  | $ 1,100,000
Decrease in effective tax rate due to recognition of an excess tax benefit and deficiency | 0.60% |
Increase in effective tax rate due to recognition of an excess tax benefit and deficiency |  | 4.60%
Maximum [Member] |  |
New Accounting Pronouncements Or Change In Accounting Principle [Line Items] |  |
Recognition of an excess tax benefit and deficiency | $ 100,000 |

X
- Definition Percentage of decrease in effective income tax rate impact due to adoption of new accounting standard update. + References No definition available. + Details
Name: | ceco_PercentageOfDecreaseInEffectiveIncomeTaxRateImpactDueToAdoptionOfNewAccountingStandardUpdate
Namespace Prefix: | ceco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of increase in effective income tax rate impact due to adoption of new accounting standard update. + References No definition available. + Details
Name: | ceco_PercentageOfIncreaseInEffectiveIncomeTaxRateImpactDueToAdoptionOfNewAccountingStandardUpdate
Namespace Prefix: | ceco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201609Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |