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FAIR VALUE ACCOUNTING (Details) $ / shares in Units, $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) | Jun. 23, 2021 $ / shares
Liabilities: |  |  |
Long term debt | $ 63,500 | $ 48,900 |
Impairment of long-lived assets | 0 |  |
Disposal Group | Projects in Nevada |  |  |
Liabilities: |  |  |
Price per common share for each warrant | $ / shares |  |  | $ 0.60
Fair Value, Measurements, Recurring [Member] |  |  |
Assets: |  |  |
Investments | 2,262 | 1,644 |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Assets: |  |  |
Investments | 2,262 | 1,644 |
Marketable equity securities. | Fair Value, Measurements, Recurring [Member] |  |  |
Assets: |  |  |
Investments | 2,262 | 1,644 |
Marketable equity securities. | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Assets: |  |  |
Investments | $ 2,262 | $ 1,644 |
Warrant | Disposal Group | Projects in Nevada |  |  |
Liabilities: |  |  |
Price per common share for each warrant | $ / shares | $ 0.60 |  |
Warrants exercised | shares | 0 |  |
Warrant | Volatility | Valuation Technique, Option Pricing Model | Projects in Nevada |  |  |
Liabilities: |  |  |
Average volatility | 94.6 |  |

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