Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Details)

v2.4.1.9
STOCK-BASED COMPENSATION (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation $ 146,559us-gaap_ShareBasedCompensation $ 297,674us-gaap_ShareBasedCompensation $ 682,775us-gaap_ShareBasedCompensation $ 1,101,465us-gaap_ShareBasedCompensation
Employee and Director Stock Option [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation 162,141us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
291,398us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
681,660us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
1,080,292us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
Employee and Director Stock Option [Member] | Research and Development Expense [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation 31,441us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
84,949us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
142,142us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
297,561us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
Employee and Director Stock Option [Member] | General and Administrative Expense [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation 130,700us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
206,449us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
491,665us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
782,731us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
Employee and Director Stock Option [Member] | Restructuring Costs [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation 0us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= clrb_RestructuringCostsMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
0us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= clrb_RestructuringCostsMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
47,853us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= clrb_RestructuringCostsMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
0us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= clrb_RestructuringCostsMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_EmployeeAndDirectorStockOptionMember
Non Employee Consultant Stock Option [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation (15,582)us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
6,276us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
1,115us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
21,173us-gaap_ShareBasedCompensation
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
Non Employee Consultant Stock Option [Member] | Research and Development Expense [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation (15,582)us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
5,812us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
1,115us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
10,134us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_ResearchAndDevelopmentExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
Non Employee Consultant Stock Option [Member] | General and Administrative Expense [Member]        
Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Line Items]        
Total stock-based compensation $ 0us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
$ 464us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
$ 0us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember
$ 11,039us-gaap_ShareBasedCompensation
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_GeneralAndAdministrativeExpenseMember
/ us-gaap_OptionIndexedToIssuersEquityTypeAxis
= clrb_NonEmployeeConsultantStockOptionMember