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Cover Page - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
May 01, 2024
Jun. 30, 2023
Entity Listings [Line Items]      
Document Type 10-K/A    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Document Period End Date Dec. 31, 2023    
Entity Registrant Name ENERGY FUELS INC.    
Entity File Number 001-36204    
Entity Incorporation, State or Country Code Z4    
Entity Tax Identification Number 98-1067994    
Entity Address, Address Line One 225 Union Blvd., Suite 600    
Entity Address, State or Province CO    
Entity Address, City or Town Lakewood    
Entity Address, Postal Zip Code 80228    
City Area Code 303    
Local Phone Number 974-2140    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Title of 12(b) Security Common Shares, no par value    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 954,990
Entity Common Stock, Shares Outstanding (in shares)   163,570,079  
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001385849    
Amendment Flag true    
Amendment Description Energy Fuels Inc. (the “Company” or “Energy Fuels”) is filing this Amendment No. 1 (the “Amendment”) to our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which was filed on February 23, 2024 (the “Form 10-K”), to (i) provide financial statements for Consolidated Uranium Inc. (“Consolidated Uranium”), pursuant to Rule 3-09 of Regulation S-X, for the period ended December 5, 2023 and years ended December 31, 2022 and 2021, and (ii) file as exhibits the material agreements entered into since the filing of the Form 10-K and the reports that have been furnished by the Company on Form 8-K. Consolidated Uranium was significant under Rule 3-09 for the year ended December 31, 2022, but not for the year ended December 31, 2021 or the period ended December 5, 2023. As a result, under Rule 3-09, we have included in this Amendment unaudited consolidated financial statements for the period ended December 5, 2023, audited consolidated financial statements for the year ended December 31, 2022 and unaudited consolidated financial statements for the year ended December 31, 2021. In accordance with Rule 3-09(b), the financial statements of Consolidated Uranium are being filed as an amendment to the Form 10-K as Exhibit 99.2 included in Part IV, Item 15 of this filing. Except as otherwise expressly noted, this Amendment does not modify or update in any way (i) the consolidated financial position, the results of operations or cash flows of the Company, or (ii) the disclosures in or exhibits to the Form 10-K; nor does it reflect events occurring after the filing of the Form 10-K. Among other things, forward-looking statements made in the Form 10-K have not been revised to reflect events that occurred or facts that became known to us after the filing of the Form 10-K, and such forward-looking statements should be read in their historical context. Furthermore, this Amendment should be read in conjunction with the Form 10-K and any subsequent filings with the United States Securities and Exchange Commission.    
NEW YORK STOCK EXCHANGE, INC.      
Entity Listings [Line Items]      
Trading Symbol UUUU    
Security Exchange Name NYSEAMER    
TORONTO STOCK EXCHANGE      
Entity Listings [Line Items]      
Title of 12(b) Security Common Shares, no par value