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v2.4.1.9

STOCKHOLDERS' EQUITY (Details 1) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Number Of Shares Reserved For Future Issuance | 7,323,562 clrb_NumberOfSharesReservedForFutureIssuance | 2,473,781 clrb_NumberOfSharesReservedForFutureIssuance
Warrant [Member] |  |
Number Of Shares Reserved For Future Issuance | 6,604,096 clrb_NumberOfSharesReservedForFutureIssuance / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember | 1,839,123 clrb_NumberOfSharesReservedForFutureIssuance / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Employee Stock Option [Member] |  |
Number Of Shares Reserved For Future Issuance | 719,466 clrb_NumberOfSharesReservedForFutureIssuance / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_EmployeeStockOptionMember | 634,658 clrb_NumberOfSharesReservedForFutureIssuance / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_EmployeeStockOptionMember

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- Definition Total number of shares reserved for future issuance. + References No definition available. + Details
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Namespace Prefix: | clrb_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |