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Subsequent Events (Details) - ATM Agreement - Leviston - USD ($) | Jul. 30, 2018 | Apr. 30, 2017
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Subsequent Event [Line Items] |  |
Aggregate offering price, up to |  | $ 7,250,000.00
Subsequent Event |  |
Subsequent Event [Line Items] |  |
Aggregate offering price, up to | $ 2,250,000 |

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- Definition Common Stock, Aggregate Offering Price + References No definition available. + Details
Name: | lode_CommonStockAggregateOfferingPrice
Namespace Prefix: | lode_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=lode_AtthemarketOfferingProgramATMAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |