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FAIR VALUE ACCOUNTING (Details) $ / shares in Units, $ in Thousands | 9 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) shares | Jun. 23, 2021 $ / shares | Dec. 31, 2020 USD ($)
Liabilities: |  |  |  |
Long term debt |  | $ 48,700 |  | $ 48,200
Gold Bar mine |  |  |  |
Liabilities: |  |  |  |
Impairment of long-lived assets | $ 83,800 |  |  |
Fair Value, Measurements, Recurring [Member] |  |  |  |
Assets: |  |  |  |
Investments |  | 1,636 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Assets: |  |  |  |
Investments |  | 1,636 |  |
Marketable equity securities. | Fair Value, Measurements, Recurring [Member] |  |  |  |
Assets: |  |  |  |
Investments |  | 1,636 |  |
Marketable equity securities. | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Assets: |  |  |  |
Investments |  | $ 1,636 |  |
Warrant |  |  |  |
Liabilities: |  |  |  |
Price per common share for each warrant | $ / shares |  |  | $ 0.60 |
Warrants exercised | shares |  | 0 |  |
Warrant | Volatility | Valuation Technique, Option Pricing Model |  |  |  |
Liabilities: |  |  |  |
Average volatility |  | 94.6 |  |

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