Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.22.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 18, 2022
Jun. 30, 2021
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 333-119366    
Entity Registrant Name CELLECTAR BIOSCIENCES, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 04-3321804    
Entity Address, Address Line One 100 Campus Drive    
Entity Address, City or Town Florham Park    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07932    
City Area Code 608    
Local Phone Number 441-8120    
Title of 12(b) Security Common stock, par value $0.00001    
Trading Symbol CLRB    
Security Exchange Name NASDAQ    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Public Float     $ 65,452,004
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   61,101,263  
Entity Central Index Key 0001279704    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name Baker Tilly US, LLP    
Auditor Firm ID 23    
Auditor Location Philadelphia, Pennsylvania