Cellectar Biosciences, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY - Additional Information (Details)

STOCKHOLDERS' EQUITY - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 05, 2020	May 20, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Class of Warrant or Right [Line Items]
Stock Issued During Period, Shares, New Issues		1,982,000
Share Price		$ 2.50
Issuance of common stock and warrants, net of issuance costs		$ 10,000,000	$ 18,258,581	$ 9,024,569
Proceeds from issuance of common stock, net of underwriting issuance costs		6,000,000			$ 18,258,581	$ 9,024,569
Proceeds from warrants		4,000,000
Net proceeds from stockholders' equity		9,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			19,278,976		19,278,976
Common Stock, Shares Authorized			80,000,000		80,000,000			80,000,000
Common Stock, Par or Stated Value Per Share			$ 0.00001		$ 0.00001			$ 0.00001
Proceeds from Warrant Exercises					$ 14
Stockholders' Equity Attributable to Parent			$ 19,985,260	15,985,453	$ 19,985,260	15,985,453	$ 5,245,947	$ 9,059,409.000	$ 9,846,974	$ 13,260,961
Proceeds from Issuance or Sale of Equity		9,000,000
Stock Issued During Period, Value, New Issues		$ 10,000,000	$ 18,258,581	$ 9,024,569
Series F warrants [Member]
Class of Warrant or Right [Line Items]
Warrants expiration period		5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 2.40
Exercise price of warrants (in dollars per share)		2.40
Series G warrants [Member]
Class of Warrant or Right [Line Items]
Share Price		$ 2.50
June 2020 Pre Funded Warrants [Member]
Class of Warrant or Right [Line Items]
Stock Issued During Period, Shares, New Issues	14,601,628
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,789,700
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right	1
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.00001
Number of share of common stock per warrant	1
Exercise price of warrants (in dollars per share)	$ 0.00001
June 2020 Series H Warrants [Member]
Class of Warrant or Right [Line Items]
Issuance of common stock and warrants, net of issuance costs	$ 20,000,000
Proceeds from issuance of common stock, net of underwriting issuance costs	12,100,000
Proceeds from warrants	7,900,000
Net proceeds from stockholders' equity	$ 18,300,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	8,695,664
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.2075
Warrants and Rights Outstanding, Term	5 years
Stockholders' Equity Attributable to Parent	$ 20,000,000
Public Offering Price Of Share And Warrants	$ 1.15
Public Offering Price Of Warrants	$ 1.1499
Proceeds from Issuance or Sale of Equity	$ 18,300,000
Stock Issued During Period, Value, New Issues	$ 20,000,000
Exercise price of warrants (in dollars per share)	$ 1.2075
Series C Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Preferred Stock, Shares Outstanding			215		215			215
Private Placement [Member]
Class of Warrant or Right [Line Items]
Warrants expiration period		5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 2.40
Exercise price of warrants (in dollars per share)		$ 2.40
Private Placement [Member] \| Series F warrants [Member]
Class of Warrant or Right [Line Items]
Warrants issued		1,982,000
Private Placement [Member] \| Series G warrants [Member]
Class of Warrant or Right [Line Items]
Stock Issued During Period, Shares, New Issues		2,018,000
Warrants issued		2,018,000
Common Stock [Member]
Class of Warrant or Right [Line Items]
Stock Issued During Period, Shares, New Issues			14,601,628	4,000,000
Issuance of common stock and warrants, net of issuance costs			$ 146	$ 40
Stockholders' Equity Attributable to Parent			254	94	$ 254	$ 94	$ 94	$ 94	$ 51	$ 47
Stock Issued During Period, Value, New Issues			$ 146	$ 40