XML 88 R73.htm IDEA: XBRL DOCUMENT
v3.20.2

Fair Value Measurements - Schedule of Liabilities Measured on Recurring Basis (Details) - USD ($) | Sep. 30, 2020 | Sep. 08, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Assets: |  |  |
Notes receivable at fair value | $ 6,400,000 | $ 6,100,000 |
Fair Value, Measurements, Recurring |  |  |
Assets: |  |  |
Notes receivable at fair value | 6,397,497 |  |
Total Assets | 16,119,519 |  | $ 9,080,000
Liabilities: |  |  |
Total Liabilities |  |  | 675,342
Fair Value, Measurements, Recurring | Convertible Preferred Stock |  |  |
Assets: |  |  |
Equity securities | 2,616,000 |  | 9,080,000
Fair Value, Measurements, Recurring | Common Stock |  |  |
Assets: |  |  |
Equity securities | 7,106,022 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) |  |  |
Assets: |  |  |
Notes receivable at fair value | 0 |  |
Total Assets | 7,106,022 |  | 0
Liabilities: |  |  |
Total Liabilities |  |  | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Convertible Preferred Stock |  |  |
Assets: |  |  |
Equity securities | 0 |  | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) | Common Stock |  |  |
Assets: |  |  |
Equity securities | 7,106,022 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |  |
Assets: |  |  |
Notes receivable at fair value | 0 |  |
Total Assets | 0 |  | 0
Liabilities: |  |  |
Total Liabilities |  |  | 675,342
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Convertible Preferred Stock |  |  |
Assets: |  |  |
Equity securities | 0 |  | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Common Stock |  |  |
Assets: |  |  |
Equity securities | 0 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Assets: |  |  |
Notes receivable at fair value | 6,397,497 |  |
Total Assets | 9,013,497 |  | 9,080,000
Liabilities: |  |  |
Total Liabilities |  |  | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Convertible Preferred Stock |  |  |
Assets: |  |  |
Equity securities | 2,616,000 |  | 9,080,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Common Stock |  |  |
Assets: |  |  |
Equity securities | $ 0 |  |
Member of Pelen, LLC | Fair Value, Measurements, Recurring |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 222,602
Member of Pelen, LLC | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 0
Member of Pelen, LLC | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 222,602
Member of Pelen, LLC | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 0
Mercury Clean Up LLC | Fair Value, Measurements, Recurring |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 452,740
Mercury Clean Up LLC | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 0
Mercury Clean Up LLC | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | 452,740
Mercury Clean Up LLC | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Liabilities: |  |  |
Accrued make-whole |  |  | $ 0

X
- Definition Accrued Make Whole Membership Interest Liability, Fair Value Disclosure + References No definition available. + Details
Name: | lode_AccruedMakeWholeMembershipInterestLiabilityFairValueDisclosure
Namespace Prefix: | lode_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
Name: | us-gaap_EquitySecuritiesFvNi
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConvertiblePreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=lode_MemberOfPelenLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=us-gaap_CorporateJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |