CASI Pharmaceuticals (CASI) 10-Q/A 10 Feb 21 2020 Q3 Quarterly report (amended) Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 06, 2020
Cover [Abstract]
Document Type	10-Q/A
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2020
Entity File Number	0-20713
Entity Registrant Name	CASI Pharmaceuticals, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	58-1959440
Entity Address, Address Line One	9620 Medical Center Drive, Suite 300
Entity Address, City or Town	Rockville
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20850
City Area Code	(240)
Local Phone Number	864-2600
Title of 12(b) Security	Common Stock
Trading Symbol	CASI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Interactive Data Current	Yes
Entity Central Index Key	0000895051
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		123,943,829