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FEDERAL INCOME TAXES - Schedule of Reconciliation of Expected Income Tax on Net Income at Statutory Rates (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2018 | Dec. 31, 2017
FEDERAL INCOME TAXES. |  |  |  |
Net loss | $ (11,121) | $ (16,144) |  |
Statutory tax rate | 21.00% | 21.00% | 21.00% | 35.00%
Tax recovery at statutory rate | $ (2,335) | $ (3,390) |  |
State tax rate | (672) | (1,173) |  |
Foreign tax rate | (1) | (2) |  |
Change in U.S. tax rates | (32) | (759) |  |
Other adjustments | 180 | 97 |  |
Operating loss carryforward adjustment | 685 | (1,409) |  |
Operating loss Section 382 adjustment | 110 | (7) |  |
Nondeductible expenses and other permanent items | 19 | (78) |  |
Sale of Uranium Entities |  | (799) |  |
Change in valuation allowance | $ 2,046 | 7,520 |  |
Income tax expense (recovery) |  |  |  |

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