<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.21.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>206</ContextCount>
  <ElementCount>389</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>87</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Cover Page</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DocumentCoverPage</Role>
      <ShortName>Cover Page</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>100010 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>100020 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>100030 - Statement - Consolidated Statements of Income</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/StatementConsolidatedStatementsOfIncome</Role>
      <ShortName>Consolidated Statements of Income</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>100040 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>100050 - Statement - Consolidated Statements of Stockholders' Deficit</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/StatementConsolidatedStatementsOfStockholdersDeficit</Role>
      <ShortName>Consolidated Statements of Stockholders' Deficit</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>100060 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPolicies</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>100070 - Disclosure - Segment Reporting</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureSegmentReporting</Role>
      <ShortName>Segment Reporting</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>100080 - Disclosure - Inventory</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureInventory</Role>
      <ShortName>Inventory</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>100090 - Disclosure - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIntangibleAssets</Role>
      <ShortName>Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>100100 - Disclosure - Note Payable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayable</Role>
      <ShortName>Note Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>100110 - Disclosure - Income per Common Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIncomePerCommonShare</Role>
      <ShortName>Income per Common Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>100120 - Disclosure - Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquity</Role>
      <ShortName>Stockholders' Equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>100130 - Disclosure - License Agreements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLicenseAgreements</Role>
      <ShortName>License Agreements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>100140 - Disclosure - Legal Proceedings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLegalProceedings</Role>
      <ShortName>Legal Proceedings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>100150 - Disclosure - Share Repurchase Plan</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureShareRepurchasePlan</Role>
      <ShortName>Share Repurchase Plan</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>100160 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>100170 - Disclosure - COVID 19</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureCOVID19</Role>
      <ShortName>COVID 19</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>100180 - Disclosure - Patent Option and Technology License Agreement</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosurePatentOptionAndTechnologyLicenseAgreement</Role>
      <ShortName>Patent Option and Technology License Agreement</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>100190 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>20</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>100200 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesTables</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPolicies</ParentRole>
      <Position>21</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>100210 - Disclosure - Segment Reporting (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureSegmentReportingTables</Role>
      <ShortName>Segment Reporting (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureSegmentReporting</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>100220 - Disclosure - Inventory (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureInventoryTables</Role>
      <ShortName>Inventory (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureInventory</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>100230 - Disclosure - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIntangibleAssetsTables</Role>
      <ShortName>Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIntangibleAssets</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>100240 - Disclosure - Note Payable (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayableTables</Role>
      <ShortName>Note Payable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayable</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>100250 - Disclosure - Income per Common Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIncomePerCommonShareTables</Role>
      <ShortName>Income per Common Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIncomePerCommonShare</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>100260 - Disclosure - Stockholders' Equity (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquityTables</Role>
      <ShortName>Stockholders' Equity (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquity</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>100270 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeases</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>100280 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesAdditionalInformationDetail</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>29</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>100290 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information 1 (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesAdditionalInformation1Detail</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information 1 (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>30</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>100300 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies - Schedule of Assets and Liabilities From Contracts With Customers (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesScheduleOfAssetsAndLiabilitiesFromContractsWithCustomersDetail</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies - Schedule of Assets and Liabilities From Contracts With Customers (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>31</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>100310 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies - Schedule of Change in Assets and Liabilities From Contracts With Customers (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesScheduleOfChangeInAssetsAndLiabilitiesFromContractsWithCustomersDetail</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies - Schedule of Change in Assets and Liabilities From Contracts With Customers (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>32</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>100320 - Disclosure - Description of Business, Basis of Presentation and Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureDescriptionOfBusinessBasisOfPresentationAndSignificantAccountingPoliciesFinancialAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetail</Role>
      <ShortName>Description of Business, Basis of Presentation and Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>33</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>100330 - Disclosure - Segment Reporting - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureSegmentReportingAdditionalInformationDetail</Role>
      <ShortName>Segment Reporting - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>34</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>100340 - Disclosure - Segment Reporting - Summary of Net Revenue, Cost of Sales, Depreciation and Amortization, Operating Profit, Interest Expense, Income Tax Expense and Assets by Segment (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureSegmentReportingSummaryOfNetRevenueCostOfSalesDepreciationAndAmortizationOperatingProfitInterestExpenseIncomeTaxExpenseAndAssetsBySegmentDetail</Role>
      <ShortName>Segment Reporting - Summary of Net Revenue, Cost of Sales, Depreciation and Amortization, Operating Profit, Interest Expense, Income Tax Expense and Assets by Segment (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>35</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>100350 - Disclosure - Inventory - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureInventoryAdditionalInformationDetail</Role>
      <ShortName>Inventory - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>36</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>100360 - Disclosure - Inventory - Components of Inventory (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureInventoryComponentsOfInventoryDetail</Role>
      <ShortName>Inventory - Components of Inventory (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>37</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>100370 - Disclosure - Intangible Assets - Schedule of Intangible Assets (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIntangibleAssetsScheduleOfIntangibleAssetsDetail</Role>
      <ShortName>Intangible Assets - Schedule of Intangible Assets (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>38</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>100380 - Disclosure - Intangible Assets - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIntangibleAssetsAdditionalInformationDetail</Role>
      <ShortName>Intangible Assets - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>39</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>100390 - Disclosure - Note Payable - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayableAdditionalInformationDetail</Role>
      <ShortName>Note Payable - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>100400 - Disclosure - Note Payable - Schedule of Note Payable Obligation (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayableScheduleOfNotePayableObligationDetail</Role>
      <ShortName>Note Payable - Schedule of Note Payable Obligation (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>100420 - Disclosure - Note Payable - Summary of Interest Expense on Note Payable (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureNotePayableSummaryOfInterestExpenseOnNotePayableDetail</Role>
      <ShortName>Note Payable - Summary of Interest Expense on Note Payable (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>100430 - Disclosure - Income per Common Share - Calculation of Basic and Diluted Net Income per Common Share (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIncomePerCommonShareCalculationOfBasicAndDilutedNetIncomePerCommonShareDetail</Role>
      <ShortName>Income per Common Share - Calculation of Basic and Diluted Net Income per Common Share (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>100440 - Disclosure - Income per Common Share - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureIncomePerCommonShareAdditionalInformationDetail</Role>
      <ShortName>Income per Common Share - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>100450 - Disclosure - Stockholders' Equity - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquityAdditionalInformationDetail</Role>
      <ShortName>Stockholders' Equity - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>100460 - Disclosure - Stockholders' Equity - Fair Value of Options Granted (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquityFairValueOfOptionsGrantedDetail</Role>
      <ShortName>Stockholders' Equity - Fair Value of Options Granted (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>46</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>100470 - Disclosure - Stockholders' Equity - Stock Option Activity (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquityStockOptionActivityDetail</Role>
      <ShortName>Stockholders' Equity - Stock Option Activity (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>100480 - Disclosure - Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquitySignificantOptionGroupsOutstandingAndExercisableOptionAndItsPriceAndContractualLifeDetail</Role>
      <ShortName>Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>48</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>100490 - Disclosure - Stockholders' Equity - Summary of Non-Vested Options (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureStockholdersEquitySummaryOfNonVestedOptionsDetail</Role>
      <ShortName>Stockholders' Equity - Summary of Non-Vested Options (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>100500 - Disclosure - License Agreements - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLicenseAgreementsAdditionalInformationDetail</Role>
      <ShortName>License Agreements - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>50</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>100510 - Disclosure - Share Repurchase Plan - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureShareRepurchasePlanAdditionalInformationDetail</Role>
      <ShortName>Share Repurchase Plan - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>100520 - Disclosure - Leases - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesAdditionalInformationDetail</Role>
      <ShortName>Leases - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>100530 - Disclosure - Leases - Summary of Lease Assets and Liabilities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesSummaryOfLeaseAssetsAndLiabilitiesDetail</Role>
      <ShortName>Leases - Summary of Lease Assets and Liabilities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>100540 - Disclosure - Leases - Summary of Maturity of the Company's Lease Liabilities (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesSummaryOfMaturityOfCompanySLeaseLiabilitiesDetail</Role>
      <ShortName>Leases - Summary of Maturity of the Company's Lease Liabilities (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>54</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>100550 - Disclosure - Leases - Summary of Remaining Lease Term and Discount Rates (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesSummaryOfRemainingLeaseTermAndDiscountRatesDetail</Role>
      <ShortName>Leases - Summary of Remaining Lease Term and Discount Rates (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>55</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>100560 - Disclosure - Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosureLeasesSummaryOfSupplementalCashFlowInformationRelatedToLeasesDetail</Role>
      <ShortName>Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="ccel-20210228.xml">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>100570 - Disclosure - Patent Option and Technology License Agreement - Additional Information (Detail)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cryo-cell.com/20210228/taxonomy/role/DisclosurePatentOptionAndTechnologyLicenseAgreementAdditionalInformationDetail</Role>
      <ShortName>Patent Option and Technology License Agreement - Additional Information (Detail)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>57</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>ccel-20210228.xml</File>
    <File>ccel-20210228.xsd</File>
    <File>ccel-20210228_cal.xml</File>
    <File>ccel-20210228_def.xml</File>
    <File>ccel-20210228_lab.xml</File>
    <File>ccel-20210228_pre.xml</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy>http://fasb.org/srt/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://fasb.org/us-gaap/2020-01-31</BaseTaxonomy>
    <BaseTaxonomy>http://xbrl.sec.gov/dei/2020-01-31</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
