| Cover | Mar. 07, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 07, 2023 |
| Entity File Number | 001-33404 |
| Entity Registrant Name | WESTWATER RESOURCES, INC. |
| Entity Central Index Key | 0000839470 |
| Entity Tax Identification Number | 75-2212772 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 6950 S. Potomac Street |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | Centennial |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80112 |
| City Area Code | 303 |
| Local Phone Number | 531-0516 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | WWR |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
