Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	Apr. 30, 2018
Document and Entity Information
Entity Registrant Name	ROCKWELL MEDICAL, INC.
Entity Central Index Key	0001041024
Document Type	10-Q/A
Document Period End Date	Mar. 31, 2018
Amendment Flag	true
Amendment Description	This Amendment No. 1 to Form 10-Q (this "Amendment") amends the Quarterly Report on Form 10-Q for the three months ended March 31, 2018 originally filed with the Securities and Exchange Commission ("SEC") on May 10, 2018 (the "Original Filing") by Rockwell Medical, Inc. (the "Company", "we", "us", or "our"). Restatement As further discussed in Note 3 to our unaudited consolidated financial statements in Part I, Item 1. "Financial Statements" of this Amendment, subsequent to the issuance of the Original Filing, the Company's Audit Committee of the Board of Directors (the "Board"), based upon the recommendation of management, concluded that we should restate our previously issued unaudited consolidated financial statements for the three-month quarterly period ended March 31, 2018 to correct for the understatement of our excess and obsolete Triferic inventory reserves and the overstatement of our stock-based compensation expense and bonus accruals. Disclosure Controls and Procedures As a result of the resignation of our prior independent registered public accountant, Plante & Moran PLLC ("Plante") and its identification of a material weakness in our internal control over financial reporting for the three-month quarterly period ended March 31, 2018, we subsequently reassessed our evaluation of the effectiveness of the design and operation of our disclosure controls and procedures as of March 31, 2018. As a result, our management concluded that we did not maintain effective disclosure controls and procedures due to the material weaknesses in internal control over financial reporting which existed as of March 31, 2018. For a description of the material weaknesses in internal control over financial reporting and actions taken, and to be taken, to address the material weakness, see Part 1, Item 4. "Controls and Procedures" of this Amendment. Amendment This Amendment (i) restates our previously issued unaudited consolidated financial statements and related disclosures in Part I, Item 1. "Financial Statements" for the three months ended March 31, 2018, as well as related disclosures in Part I, Item 2. "Management's Discussion and Analysis of Financial Condition and Results of Operations," to reflect the over accrual of discretionary bonuses, overstatement of stock-based compensation expense and to reflect our reassessment of the adequacy of our excess and obsolete Triferic inventory reserves as of and for the three-month quarterly period ended March 31, 2018 and the status of obtaining separate reimbursement for Triferic and (ii) amends and restates in its entirety Part I, Item 4. "Controls and Procedures" of the Original Filing to reflect the Audit Committee's conclusion, based upon the recommendation of management, that our internal control over financial reporting and disclosure controls and procedures were not effective as of March 31, 2018, due to the identification of a material weaknesses in our internal control over financial reporting which resulted in the understatement of our Triferic inventory reserves. In addition, during the three months ended March 31, 2018, the Company reclassified $2.3 million of its inventory from a current asset to a non-current asset and reclassified $2.3 million of its deferred license revenue from long-term liabilities to current liabilities. Except as expressly set forth herein, this Amendment does not reflect events occurring after the date of the Original Filing or modify or update any of the other disclosures contained therein in any way other than as required to be reflected herein. Accordingly, this Amendment should be read in conjunction with the Original Filing and our other filings with the SEC. Items Amended in this Filing For the reasons discussed above, we are filing this Amendment in order to amend the following items in our Original Report and only to the extent necessary to reflect the adjustments discussed above and make corresponding revisions to our financial data cited elsewhere in this Amendment: Part I, Item 1. Financial Statements Part I, Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations Part I, Item 4. Controls and Procedures In accordance with applicable SEC rules, this Amendment includes new certifications required by Rule 12a-14 under the Securities Exchange Act of 1934, as amended, from our Interim Principal Executive Officer and Principal Accounting Officer dated as of the date of filing of this Amendment.
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		51,768,424
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1