Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

v3.19.3.a.u2
Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Feb. 26, 2020
Jun. 30, 2019
Document And Entity Information [Abstract]      
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Entity Registrant Name UR-ENERGY INC    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   160,478,059  
Entity Public Float     $ 145.5
Entity Central Index Key 0001375205    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Amendment Flag false