DISCONTINUED OPERATIONS - Business segments included in discontinued operations (Details) - Uranium And Lithium Operations $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Mineral property expenses	$ (602)
General and administrative expenses	(417)
Accretion of asset retirement obligations	(106)
Depreciation and amortization	(11)
Other income (expense)	11
Net Loss from Discontinued Operations	$ (1,125)

Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations.

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Amount of general and administrative expense attributable to disposal group, including, but not limited to, discontinued operation.

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Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of other income (expense) attributable to disposal group, including, but not limited to, discontinued operation.

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