XML 65 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Cover Page - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Mar. 18, 2021
Jun. 30, 2020
Entity Listings [Line Items]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Document Period End Date Dec. 31, 2020    
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 Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Title of 12(b) Security Common shares, no par value    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 280,940
Entity Common Stock, Shares Outstanding (in shares)   140,565,924  
Document Fiscal Year Focus 2020    
Document Fiscal Period Focus FY    
Entity Central Index Key 0001385849    
Amendment Flag false    
NEW YORK STOCK EXCHANGE, INC.      
Entity Listings [Line Items]      
Trading Symbol UUUU    
Security Exchange Name NYSEAMER    
TORONTO STOCK EXCHANGE      
Entity Listings [Line Items]      
Trading Symbol UUUU-WT    
Title of 12(b) Security Common shares, no par value