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LEASES - Narrative (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019
Lessee, Lease, Description [Line Items] |  |  |
Right-of-use lease asset | $ 353,000 | $ 470,000 | $ 595,870
Lease liability | 363,000 |  | 599,596
Current portion of lease liabilities | $ 149,000 | 147,000 |
Lease term using a discount rate | 9.50% |  |
Lease expense: |  |  |
Operating lease cost | $ 161,000 |  |
Supplemental cash flow information related to leases: |  |  |
Cash flows from operating leases | 153,000 |  |
Operating leases | 353,000 |  |
Supplemental balance sheet information related to leases: |  |  |
Operating lease right-of-use assets | 353,000 |  |
Current portion of lease liabilities | 149,000 | 147,000 |
Operating lease liabilities - Long term portion | 214,000 | $ 332,000 |
Total operating lease liabilities | $ 363,000 |  | $ 599,596
Weighted Average Remaining Lease Term (in years) | 3 years |  |
Discount Rate | 9.50% |  |
Remaining undiscounted cash payments through 2023 | $ 406,000 |  |
Corporate office |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Variable lease terms | Because these amounts are variable from year to year and not specifically set in the lease terms, they are not included in the measurement of the right-of-use asset and related lease liability, but rather expensed in the period incurred. |  |
Lessee, Operating Lease, Existence of Option to Extend [true false] | true |  |
Option to extend, renewal term | 3 years |  |
Continuing operations |  |  |
Lease expense: |  |  |
Operating lease cost | $ 155,000 |  |
Discontinued operations. |  |  |
Lease expense: |  |  |
Operating lease cost | $ 6,000 |  |
Minimum | Corporate offices, storage space and equipment |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Remaining lease term | 1 year |  |
Maximum | Corporate offices, storage space and equipment |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Remaining lease term | 5 years |  |
Maximum | Land used in exploration and mining activities, office equipment, machinery, office space, storage and other |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Term of contract | 1 year |  |

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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
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