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NOTES RECEIVABLE (Details) |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 30, 2019 tranche | Mar. 25, 2019 USD ($) shares | Jan. 31, 2019 USD ($) installment shares | Jan. 31, 2018 USD ($) installment shares | Jan. 31, 2017 USD ($) shares | Mar. 31, 2018 installment | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jan. 05, 2020 USD ($) | Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Number of installments | installment |  |  | 2 |  |  | 2 |  |  |  |
Number of tranches | tranche | 3 |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  |  |  |  |  |  | $ 63,614,000 | $ 6,652,000 |  |
Loss on sale of marketable securities |  |  |  |  |  |  |  | 720,000 |  |
Laramide Resources Ltd. |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Number of issuance of common shares | shares |  |  | 2,483,034 | 1,982,483 | 2,218,133 |  |  |  |  |
Laramide Resources Ltd. |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Market rate used to determine fair value |  |  |  |  | 9.50% |  |  |  |  |
Laramide Resources Ltd. | First Note Installment |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Debt principal amount due |  |  |  | $ 1,500,000 |  |  |  |  |  |
Principal payment in cash |  |  |  | $ 750,000 |  |  |  |  |  |
Number of issuance of common shares | shares |  |  |  | 1,982,483 |  |  |  |  |  |
Laramide Resources Ltd. | Second Note Installment |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Debt principal amount due |  |  | $ 1,500,000 |  |  |  |  |  |  |
Principal payment in cash |  |  | $ 750,000 |  |  |  |  |  |  |
Number of issuance of common shares | shares |  |  | 2,483,034 |  |  |  |  |  |  |
Interest payments received |  |  |  |  |  |  |  | $ 96,022 |  |
Laramide Resources Ltd. | Share-based Compensation Award, Tranche Two | Warrants |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Number of issuance of common shares | shares |  | 2,218,133 |  |  |  |  |  |  |  |
Laramide Resources Ltd. | Share Based Compensation Award Tranche Third |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  | $ 500,000 |  |  |  |  |  |  |  |
Loss on sale of marketable securities |  | $ 700,000 |  |  |  |  |  |  |  |
Laramide Resources Ltd. | Share Based Compensation Award Tranche Third | Common Stock |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Number of issuance of common shares | shares |  | 2,483,034 |  |  |  |  |  |  |  |
enCore |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock received and royalty interest retained |  |  |  |  |  |  | $ 1,800,000 |  |  |
Promissory note receivable | Laramide Resources Ltd. |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration for the sale of Hydro Resources, Inc. |  |  |  |  | $ 5,000,000 |  |  |  |  |
Promissory note receivable | Laramide Resources Ltd. |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Debt term |  |  |  |  | 3 years |  |  |  |  |
Debt interest rate |  |  |  |  |  |  |  |  |  | 5.00%
Debt principal amount due |  |  |  |  |  |  |  |  | $ 2,000,000 |
Interest rate terms |  |  |  |  | Interest is payable on a quarterly basis during the final year. Laramide had the right to satisfy up to half of the principal payments by delivering shares of its common stock to the Company, which shares were valued by reference to the volume weighted average price ("VWAP") for Laramide's common stock for the 20 trading days before their respective anniversaries of the initial issuance date in January. The fair value of this note receivable was determined using the present value of the future cash receipts discounted at a market rate of 9.5%. |  |  |  |  |
Promissory note receivable | Laramide Resources Ltd. |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Number of installments | installment |  |  | 2 | 2 |  |  |  |  |  |
Installment payments received |  |  | $ 1,500,000 | $ 1,500,000 |  |  |  |  |  |

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