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LEASES - Narrative (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Lessee, Lease, Description [Line Items] |  |  |
Right-of-use lease asset | $ 258 |  | $ 353
Lease liability | 268 |  | 363
Current portion of lease liabilities | $ 151 |  | 149
Lease term using a discount rate | 9.50% |  |
Lease expense: |  |  |
Operating lease cost | $ 115 | $ 112 |
Supplemental cash flow information related to leases: |  |  |
Cash flows from operating leases | 115 | 115 |
Operating leases | 258 | $ 383 |
Supplemental balance sheet information related to leases: |  |  |
Operating lease right-of-use assets | 258 |  | 353
Current portion of lease liabilities | 151 |  | 149
Operating lease liabilities - Long term portion | 117 |  | 214
Total operating lease liabilities | $ 268 |  | $ 363
Weighted Average Remaining Lease Term (in years) | 1 year 9 months 18 days | 3 years |
Discount Rate | 9.50% | 9.50% |
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 |  |
Minimum | Corporate offices, storage space and equipment |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Remaining lease term | 1 year 1 month 6 days |  |
Maximum | Corporate offices, storage space and equipment |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Remaining lease term | 1 year 9 months 18 days |  |
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 Discount rate used by lessee to determine present value of operating lease payments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
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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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