Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 12, 2020
Document And Entity Information
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Entity Registrant Name	WESTWATER RESOURCES, INC.
Title of 12(b) Security	Common Stock
Trading Symbol	WWR
Security Exchange Name	NASDAQ
Entity's Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		19,021,859
Entity Central Index Key	0000839470
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false