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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Fair Value on Recurring and Non-recurring Basis (Details) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) | Jul. 23, 2021 USD ($) | Dec. 31, 2020 USD ($)
Current Assets: |  |  |  |
Equity securities |  |  |  | $ 1,520,000
Total current assets recorded at fair value |  |  |  | 1,520,000
Non-current Assets |  |  |  |
Restricted cash |  |  |  | 10,000
Land grant | $ 1,378,000 | $ 1,378,000 |  |
Total non-current assets recorded at fair value | 1,378,000 | 1,378,000 |  | 10,000
Non-current Liabilities |  |  |  |
Land grant obligation | (1,378,000) | (1,378,000) |  |
Total non-current liabilities recorded at fair value | $ (1,378,000) | (1,378,000) |  |
Percentage of equity securities sold | 100.00% |  |  |
Proceeds from the sale of equity securities, net | $ 3,600,000 | $ 3,577,000 |  |
Discount for lack of marketability |  |  |  |
Non-current Liabilities |  |  |  |
Fair value of available-for-sale securities | 375,000 | 375,000 |  |
Risk-free rate |  |  |  |
Non-current Liabilities |  |  |  |
Fair value of available-for-sale securities | 0.09 | 0.09 |  |
Volatility factor |  |  |  |
Non-current Liabilities |  |  |  |
Fair value of available-for-sale securities | 89.1 | 89.1 |  |
Level 1 |  |  |  |
Non-current Assets |  |  |  |
Restricted cash |  |  |  | 10,000
Total non-current assets recorded at fair value |  |  |  | 10,000
Level 2 |  |  |  |
Current Assets: |  |  |  |
Equity securities |  |  |  |
Total current assets recorded at fair value |  |  |  |
Non-current Assets |  |  |  |
Restricted cash |  |  |  |
Land grant |  |  |  |
Total non-current assets recorded at fair value |  |  |  |
Non-current Liabilities |  |  |  |
Land grant obligation |  |  |  |
Total non-current liabilities recorded at fair value |  |  |  |
Level 3 |  |  |  |
Current Assets: |  |  |  |
Equity securities |  |  |  | 1,520,000
Total current assets recorded at fair value |  |  |  | 1,520,000
Non-current Assets |  |  |  |
Restricted cash |  |  |  |
Land grant | 1,378,000 | 1,378,000 |  |
Total non-current assets recorded at fair value | 1,378,000 | 1,378,000 |  |
Non-current Liabilities |  |  |  |
Land grant obligation | (1,378,000) | (1,378,000) |  |
Total non-current liabilities recorded at fair value | (1,378,000) | (1,378,000) |  |
Alabama Graphite |  |  |  |
Non-current Assets |  |  |  |
Land grant | $ 1,400,000 | $ 1,400,000 |  |
Alabama Graphite | Non-recurring |  |  |  |
Non-current Assets |  |  |  |
Land grant |  |  | $ 1,400,000 |

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