Annual report pursuant to Section 13 and 15(d)

RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS (Details Textual)

v2.4.1.9
RESTATEMENT OF PREVIOUSLY ISSUED CONSOLIDATED FINANCIAL STATEMENTS (Details Textual) (USD $)
1 Months Ended 12 Months Ended
Aug. 20, 2014
Dec. 31, 2014
Dec. 31, 2013
Feb. 20, 2014
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 10.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   6,604,096us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights   275,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
August 2014 Debenture [Member]        
Debt Conversion, Converted Instrument, Shares Issued 1,109,690us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
     
Interest Payable $ 172,435us-gaap_InterestPayableCurrentAndNoncurrent
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
     
Share Price $ 3.76us-gaap_SharePrice
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
     
Debt Instrument, Face Amount 4,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
     
August 2014 Underwritten Offering [Member]        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 3.75us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_DebtInstrumentAxis
= clrb_August2014UnderwrittenOfferingMember
     
Share Price $ 3.75us-gaap_SharePrice
/ us-gaap_DebtInstrumentAxis
= clrb_August2014UnderwrittenOfferingMember
     
Warrants Settleable In Cash, Cash Settlement Feature $ 4,943,023clrb_WarrantsSettleableInCashCashSettlementFeature
/ us-gaap_DebtInstrumentAxis
= clrb_August2014UnderwrittenOfferingMember
     
Common Stock [Member]        
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right 3,833,333us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.68us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 3,833,333us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Share Price $ 3.75us-gaap_SharePrice
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Stock Issued During Period, Shares, New Issues 3,583,333us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
3,583,333us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
550,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
 
Common Stock [Member] | August 2014 Debenture [Member]        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.68us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 1,109,690us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Debt Conversion, Converted Instrument, Shares Issued 1,109,690us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_DebtInstrumentAxis
= clrb_August2014DebentureMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember