Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2020 | Apr. 28, 2021 | Jun. 30, 2020 | |
Cover [Abstract] | |||
Document Type | 10-K/A | ||
Amendment Flag | false | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Document Period End Date | Dec. 31, 2020 | ||
Document Fiscal Period Focus | FY | ||
Document Fiscal Year Focus | 2020 | ||
Current Fiscal Year End Date | --12-31 | ||
Entity File Number | 0-20713 | ||
Entity Registrant Name | CASI PHARMACEUTICALS, INC. | ||
Entity Central Index Key | 0000895051 | ||
Entity Tax Identification Number | 58-1959440 | ||
Entity Incorporation, State or Country Code | DE | ||
Entity Address, Address Line One | 9620 Medical Center Drive | ||
Entity Address, Address Line Two | 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, $0.01 par value | ||
Trading Symbol | CASI | ||
Security Exchange Name | NASDAQ | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Filer Category | Non-accelerated Filer | ||
Entity Small Business | true | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 183,834,503 | ||
Entity Common Stock, Shares Outstanding | 139,797,487 | ||
ICFR Auditor Attestation Flag | false |