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DISCONTINUED OPERATIONS - Business segments included in discontinued operations (Details) - Uranium And Lithium Operations - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Mineral property expenses | $ (752) | $ (1,924)
General and administrative expenses | (405) | (1,273)
Accretion of asset retirement obligations | (32) | (170)
Depreciation and amortization | (30) | (36)
Impairment of uranium properties | (5,200) | (5,200)
Other income (expense) | 30 | 30
Net Loss from Discontinued Operations | $ (6,389) | $ (8,573)

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