Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Feb. 29, 2024
Jun. 30, 2023
Cover [Abstract]      
Entity Registrant Name UR-ENERGY INC.    
Entity Central Index Key 0001375205    
Document Type 10-K/A    
Amendment Flag true    
Entity Voluntary Filers No    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company false    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2023    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2023    
Entity Common Stock Shares Outstanding   281,626,324  
Entity Public Float     $ 252.3
Entity File Number 001-33905    
Entity Incorporation State Country Code Z4    
Entity Address Address Line 1 10758 West Centennial Road    
Entity Address Address Line 2 Suite 200    
Entity Address City Or Town Littleton    
Entity Address State Or Province CO    
Entity Address Postal Zip Code 80127    
City Area Code 720    
Local Phone Number 981-4588    
Security 12b Title Common Shares, no par value    
Trading Symbol URG    
Security Exchange Name NYSE    
Document Annual Report true    
Document Transition Report false    
Entity Interactive Data Current Yes    
Icfr Auditor Attestation Flag false    
Document Fin Stmt Error Correction Flag false    
Amendment Description On March 6, 2024, Ur-Energy Inc. (the “Company”) filed with the Securities and Exchange Commission its Annual Report on Form 10-K for the year ended December 31, 2023 (the “Original Form 10-K”). This Amendment No. 1 to Form 10-K (“Amendment”) of the Company is being filed solely to amend Item 15 and Exhibit 96.2 to file an amended Technical Report Summary on the Shirley Basin ISR Uranium Project, Carbon County, Wyoming, USA. The Technical Report Summary that was filed with the Original Form 10-K included errors in Table 16 (“Life of Mine Operating Expenses”) with data missing or inaccurately stated. The text of the Technical Report Summary and conclusions in the report remain unchanged.  This Amendment should be read in conjunction with the Original Form 10-K and includes only the portions of the Company’s Annual Report on Form 10-K being supplemented or amended by this Form 10-K/A. Other than as described in this explanatory note, this Amendment does not change any of the financial or other information set forth in the Original Form 10-K or the exhibits thereto. This Amendment does not reflect events that may have occurred subsequent to the filing of the Original Form 10-K. In addition, as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), new certifications by the Company’s principal executive officer and principal financial officer are filed herewith as exhibits to this Amendment pursuant to Rule 13a-14(a) or 15d-14(a) of the Exchange Act. As no financial statements have been included in this Amendment and this Amendment does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. The Company is not including certifications pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as no financial statements are being filed with this Amendment.    
Auditor Location Vancouver, Canada    
Auditor Firm Id 271    
Auditor Name PricewaterhouseCoopers LLP