XML 89 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Mar. 16, 2020
Jun. 30, 2019
Document and Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Entity Registrant Name ENERGY FUELS INC    
Entity Central Index Key 0001385849    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding (in shares)   114,945,157  
Entity Shell Company false    
Entity Small Business false    
Entity Current Reporting Status Yes    
Entity Emerging Growth Company false    
Entity Voluntary Filers No    
Entity Well Known Seasoned Issuer No    
Entity Public Float     $ 280,935,422,000
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus Q4