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PREFERRED STOCK (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 12, 2016 | Mar. 31, 2020 | Jun. 30, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |
Preferred stock, par value |  |  | $ 0.01 |
Temporary Equity, Shares Outstanding |  |  |  | 50,000
Payments for Repurchase of Redeemable Preferred Stock |  |  |  | $ 2,000
Preferred Stock, Redemption Price Per Share |  |  |  | $ 3.68
Preferred Stock, Redemption Amount |  |  |  | $ 3,200
Preferred Stock, Liquidation Preference, Value |  |  |  | $ 3,600
Number of stock shares issued |  |  | 1,300,000 | 2,000,000.0
Number of shares issued, value |  | $ (1) |  |
Common Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock Redeemed or Called During Period, Shares |  |  |  | 328,000
Number of stock shares issued |  | (327) |  |
Number of shares issued, value |  |  |  |
Series P Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred shares authorized |  |  | 50,000 |
Series A Convertible Preferred Stock [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred stock, par value | $ 0.01 |  |  |
Liquidation preference per share | $ 40 |  |  |
Liquidation preference | $ 2,000 |  |  |
Preferred stock, dividend rate | 12.25% |  |  |
Number of shares converted | 1.33 |  |  |
Preferred stock issued upon conversion | 66,667 |  |  |
Series A Convertible Preferred Stock [Member] | Mt. Emmons Mining Company [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Number of stock shares issued | 50,000 |  |  |
Number of shares issued, value | $ 2,000 |  |  |
Maximum [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Preferred shares authorized |  |  | 100,000 |

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