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DISCONTINUED OPERATIONS - Carrying amounts of major classes of assets (Details) $ in Thousands | Dec. 31, 2019 USD ($)
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Disposal Group, Including Discontinued Operation, Assets, Current [Abstract] |
Restricted Cash | $ 3,787
Net property, plant and equipment | 11,342
Disposal Group, Including Discontinued Operation, Assets, Noncurrent [Abstract] |
Assets Held for Sale, non-current | 15,143
Disposal Group, Including Discontinued Operation, Liabilities, Current [Abstract] |
Current Liabilities Held for Sale | 900
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent [Abstract] |
Liabilities Held for Sale, non-current | 5,414
Uranium And Lithium Operations | Discontinued Operations, Held-for-sale or Disposed of by Sale |
Disposal Group, Including Discontinued Operation, Assets, Noncurrent [Abstract] |
Net property, plant and equipment | 11,342
Operating lease right-of-use assets | 14
Restricted cash | 3,787
Assets Held for Sale, non-current | 15,143
Total Assets Held for Sale | 15,143
Disposal Group, Including Discontinued Operation, Liabilities, Current [Abstract] |
Asset retirement obligations - current | 894
Operating lease liability - current | 6
Current Liabilities Held for Sale | 900
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent [Abstract] |
Asset retirement obligations, net of current | 5,406
Operating lease liability, net of current | 8
Liabilities Held for Sale, non-current | 5,414
Total Liabilities Held for Sale | $ 6,314

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