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Commitments and Contingencies - Additional Information (Detail) | 9 Months Ended
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Aug. 31, 2025
Duke University [Member] |
Commitment And Contingencies [Line Items] |
Duke license agreement, termination date | May 17, 2025
Minimum [Member] |
Commitment And Contingencies [Line Items] |
Employee agreements period | 1 year
Maximum [Member] |
Commitment And Contingencies [Line Items] |
Employee agreements period | 2 years

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- Definition Commitment And Contingencies [Line Items] + References No definition available. + Details
Name: | ccel_CommitmentAndContingenciesLineItems
Namespace Prefix: | ccel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Employment agreements period. + References No definition available. + Details
Name: | ccel_EmploymentAgreementsPeriod
Namespace Prefix: | ccel_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Termination date. + References No definition available. + Details
Name: | ccel_TerminationDate
Namespace Prefix: | ccel_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_TypeOfArrangementAxis=ccel_DukeUniversityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |