Cover - USD ($)	12 Months Ended
	Dec. 31, 2022	Mar. 29, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	000-23661
Entity Registrant Name	ROCKWELL MEDICAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-3317208
Entity Address, Address Line One	30142 S. Wixom Road
Entity Address, City or Town	Wixom
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48393
City Area Code	248
Local Phone Number	960‑9009
Title of 12(b) Security	Common Stock, par value $.0001
Trading Symbol	RMTI
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 11,096,662
Entity Common Stock, Shares Outstanding		12,552,673
Documents Incorporated by Reference	Portions of the registrant’s definitive Proxy Statement pertaining to the 2023 Annual Meeting of Stockholders, which the Registrant intends to file pursuant to Regulation 14A with the Securities and Exchange Commission not later than 120 days after the Registrant’s fiscal year ended December 31, 2022, are herein incorporated by reference in Part III of this Annual Report on Form 10‑K.
Entity Central Index Key	0001041024
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Security Exchange Name	NASDAQ