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LICENSE AGREEMENTS (Details Textual) (USD $) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2003 | Dec. 31, 2014 | Dec. 31, 2013
Schedule of License Agreements [Line Items] |  |  |
Payment Of License Fee | $ 10,000 clrb_PaymentOfLicenseFee |  |
Payment Of Sublicense Fee Description | if the sublicense fee payable to the Company is between 4% and 5% of net sales, then the royalties payable to U. Mich. Shall be equal to 50% of the sublicense fee. |  |
Percentage Of Revenue Received In Kind | 10.00%clrb_PercentageOfRevenueReceivedInKind |  |
Maximum [Member] |  |  |
Schedule of License Agreements [Line Items] |  |  |
Future Milestone Payments | 200,000 clrb_FutureMilestonePayments / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Minimum [Member] |  |  |
Schedule of License Agreements [Line Items] |  |  |
Future Milestone Payments | 100,000 clrb_FutureMilestonePayments / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
University Of Michigan Agreement [Member] |  |  |
Schedule of License Agreements [Line Items] |  |  |
Agreement Expiration Period | 2016 |  |
Milestone Payment Method Description | if sales in the first 12 months are less than the amount of the milestone, then we are required to pay 50% of all sales until the milestone is satisfied. |  |
Future Milestone Payments | 400,000 clrb_FutureMilestonePayments / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember |  |
Percentage Of Royalty Revenue | 3.00%clrb_PercentageOfRoyaltyRevenue / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember |  |
Percentage Of Reduction In Royalties Owed | 50.00%clrb_PercentageOfReductionInRoyaltiesOwed / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember |  |
Reimbursement Of Patent Maintenance Fees |  | 500 clrb_ReimbursementOfPatentMaintenanceFees / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember | 4,200 clrb_ReimbursementOfPatentMaintenanceFees / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember
University Of Michigan Agreement [Member] | New Drug Application [Member] |  |  |
Schedule of License Agreements [Line Items] |  |  |
Payment Of Milestone Expenses | $ 50,000 clrb_PaymentOfMilestoneExpenses / us-gaap_ProductOrServiceAxis = clrb_NewDrugApplicationMember / clrb_TypesOfAgreementAxis = clrb_UniversityOfMichiganAgreementMember |  |
Milestone Payment Method Description | such milestone fees may be deferred and paid within 12 months of the first commercial sale of such products |  |

X
- Definition Period which indicates the agreement expiration. + References No definition available. + Details
Name: | clrb_AgreementExpirationPeriod
Namespace Prefix: | clrb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Future milestone payments to be made or received which are dependent on specific drug development milestones. + References No definition available. + Details
Name: | clrb_FutureMilestonePayments
Namespace Prefix: | clrb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A description of the payment method of milestone expenses. + References No definition available. + Details
Name: | clrb_MilestonePaymentMethodDescription
Namespace Prefix: | clrb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expenses paid annual license fees paid during the period. + References No definition available. + Details
Name: | clrb_PaymentOfLicenseFee
Namespace Prefix: | clrb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Payment made for the milestone expenses during the period. + References No definition available. + Details
Name: | clrb_PaymentOfMilestoneExpenses
Namespace Prefix: | clrb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Description relating to the sublicense fee payable on the percentage of net sales. + References No definition available. + Details
Name: | clrb_PaymentOfSublicenseFeeDescription
Namespace Prefix: | clrb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage in the reduction of the royalties owed to any third parties related to the sale of products. + References No definition available. + Details
Name: | clrb_PercentageOfReductionInRoyaltiesOwed
Namespace Prefix: | clrb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of revenue to be paid under the agreement on non-sales based revenue received. + References No definition available. + Details
Name: | clrb_PercentageOfRevenueReceivedInKind
Namespace Prefix: | clrb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of royalty revenue is derived from a stated amount of sales proceeds or revenue generated by the third party using the entity's property. + References No definition available. + Details
Name: | clrb_PercentageOfRoyaltyRevenue
Namespace Prefix: | clrb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payments made for maintenance of patents. + References No definition available. + Details
Name: | clrb_ReimbursementOfPatentMaintenanceFees
Namespace Prefix: | clrb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | clrb_ScheduleOfLicenseAgreementsLineItems
Namespace Prefix: | clrb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | clrb_TypesOfAgreementAxis=clrb_UniversityOfMichiganAgreementMember
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: |

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