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Consolidated Statements of Cash Flows (Unaudited) (USD $) | 3 Months Ended
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Feb. 28, 2015 | Feb. 28, 2014
Statement of Cash Flows [Abstract] |  |
Net income | $ 286,170 us-gaap_NetIncomeLoss | $ 397,112 us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization expense | 58,994 ccel_DepreciationAndAmortizationExpense | 95,813 ccel_DepreciationAndAmortizationExpense
Compensatory element of stock options | 190,513 us-gaap_ShareBasedCompensation | 152,236 us-gaap_ShareBasedCompensation
Provision for doubtful accounts | 140,505 us-gaap_ProvisionForDoubtfulAccounts | 161,891 us-gaap_ProvisionForDoubtfulAccounts
Equity in losses of affiliate | 8,248 us-gaap_IncomeLossFromEquityMethodInvestments | 113,575 us-gaap_IncomeLossFromEquityMethodInvestments
Changes in assets and liabilities: |  |
Accounts receivable | (268,511)us-gaap_IncreaseDecreaseInAccountsReceivable | (529,649)us-gaap_IncreaseDecreaseInAccountsReceivable
Notes receivable |  | 550,782 us-gaap_IncreaseDecreaseInNotesReceivables
Prepaid expenses and other current assets | 46,080 us-gaap_IncreaseDecreaseInPrepaidExpense | 77,758 us-gaap_IncreaseDecreaseInPrepaidExpense
Other current assets | (6,500)us-gaap_IncreaseDecreaseInOtherCurrentAssets |
Deposits and other assets, net | 9,575 ccel_IncreaseDecreaseInDepositsAndOtherAssets | 42,628 ccel_IncreaseDecreaseInDepositsAndOtherAssets
Accounts payable | 342,799 us-gaap_IncreaseDecreaseInAccountsPayable | 231,176 us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses | (564,624)us-gaap_IncreaseDecreaseInAccruedLiabilities | (713,994)us-gaap_IncreaseDecreaseInAccruedLiabilities
Deferred revenue | 85,715 us-gaap_IncreaseDecreaseInDeferredRevenue | (686,024)us-gaap_IncreaseDecreaseInDeferredRevenue
Net cash provided by (used in) operating activities | 328,964 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (106,696)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities: |  |
Release of restricted cash held in escrow | (56)us-gaap_IncreaseDecreaseInRestrictedCash | 24,166 us-gaap_IncreaseDecreaseInRestrictedCash
Purchases of property and equipment | (23,303)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (11,025)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Sales (purchases) of marketable securities and other investments, net | 4,413 us-gaap_PaymentsForProceedsFromInvestments | (61,685)us-gaap_PaymentsForProceedsFromInvestments
Investment in affiliate |  | (75,000)us-gaap_PaymentsToAcquireEquityMethodInvestments
Net cash used in investing activities | (18,946)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (123,544)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities: |  |
Treasury stock purchases | (39,042)us-gaap_PaymentsForRepurchaseOfCommonStock | (451,913)us-gaap_PaymentsForRepurchaseOfCommonStock
Net cash used in financing activities | (39,042)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (451,913)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Increase (decrease) in cash and cash equivalents | 270,976 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (682,153)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents - beginning of period | 3,279,267 us-gaap_CashAndCashEquivalentsAtCarryingValue | 3,925,156 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents - end of period | $ 3,550,243 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 3,243,003 us-gaap_CashAndCashEquivalentsAtCarryingValue

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