v3.25.2

STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ in Millions			3 Months Ended		6 Months Ended
	May 27, 2025	May 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock-based compensation expense			$ 0.8	$ 0.3	$ 0.9	$ 0.5
Weighted average remaining term for stock options outstanding					9 years 2 months 12 days
Non-vested stock options			0		0
Restricted Stock Units (RSUs)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs related to non-vested stock options, period recognized					2 years 6 months
Unrecognized compensation costs related to non-vested stock units			$ 6.1		$ 6.1
2013 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized	20,000,000	3,000,000
Number of common stock shares reserved for future issuance			48,281		48,281
2013 Plan \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock option vesting period					10 years
Inducement Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of common stock shares reserved for future issuance			114,429		114,429

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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WESTWATER RESOURCES, INC. 10-Q