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FEDERAL INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income taxes and operating loss carryforwards |  |  |  |
Increase in valuation allowance |  | $ 13,300 |  |
Income tax reconciliation description | The United States enacted comprehensive tax reform legislation known as the "Tax Cuts and Jobs Act' that, among other things, reduces the U.S. Federal corporate income tax rate from 35% to 21% and implements a territorial tax system, but imposes an alternative 'base erosion and anti-abuse tax' ('BEAT'), and incremental tax on global intangible low tax foreign income ('GILTI') effective January 1, 2018. |  |  |
Percentage on Federal corporate income tax rate | 21.00% | 21.00% | 21.00% | 35.00%
Percentage of valuation allowance recorded against the net deferred tax assets | 100.00% |  |  |
Capital loss carryforward | $ 22,176 | $ 393 |  |
Deferred tax assets, operating loss carryforwards | 16,009 | 13,795 |  |
Section 382 |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards | $ 80,000 |  |  |
Operating Loss Carryforwards, Limitations on Use | A formal Section 382 study would be required to determine the actual allowable usage of US net operating loss carryforwards. However, based on information currently available, the Company currently estimates that $80 million of the US net operating losses will not be able to be utilized and have reduced the Company's deferred tax asset accordingly. |  |  |
Neutron Energy Inc |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards | $ 1,600 |  |  |
United States |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards |  | $ 11,900 |  |
Capital loss carryforward | $ 104,400 |  |  |
United States | Minimum |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Operating loss carryforwards expiration year | 2021 |  |  |
Capital loss carryforwards expiration year | 2022 |  |  |
United States | Maximum |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Operating loss carryforwards expiration year | Indefinite availability |  |  |
Capital loss carryforwards expiration year | 2025 |  |  |
Australia |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards | $ 17,100 |  |  |
Turkey |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards | $ 3,800 |  |  |
Turkey | Minimum |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Operating loss carryforwards expiration year | 2021 |  |  |
Turkey | Maximum |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Operating loss carryforwards expiration year | 2024. |  |  |
Anatolia |  |  |  |
Income taxes and operating loss carryforwards |  |  |  |
Net operating loss carryforwards | $ 13,300 |  |  |

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