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Related Party Transactions (Details) (USD $)
0 Months Ended 12 Months Ended 0 Months Ended
Oct. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Oct. 20, 2010
Related Party Transaction [Line Items]          
Amount of required capital expenditures $ 400,000us-gaap_LongTermPurchaseCommitmentAmount        
Amortization of non-employee stock-based compensation   1,875,792us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims 3,271,511us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims 7,914,918us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims  
Debt convertible, threshold trading days   5us-gaap_DebtInstrumentConvertibleThresholdTradingDays      
Purchase of properties, plant and equipment   1,014,957us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets   444,700us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets  
Related Party Leases          
Related Party Transaction [Line Items]          
Operating agreement term         39 years
Amount of related party transaction         862,500us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Percentage reduction in net smelter royalty rate         8.00%lode_NetSmelterReturnRoyaltyPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Capitalized share-based payments   170,104us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionCapitalizedCost
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
2,047,575us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionCapitalizedCost
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
2,466,750us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionCapitalizedCost
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
 
Amortization period   1 year      
Amortization of non-employee stock-based compensation   1,876,417us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
2,328,367us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
2,027,325us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
 
Related Party Leases | Capital Addition Purchase Commitments          
Related Party Transaction [Line Items]          
Operating agreement term         5 years
Amount of required capital expenditures         750,000us-gaap_LongTermPurchaseCommitmentAmount
/ us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis
= us-gaap_CapitalAdditionsMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
Related Party Leases | 7.5% Series A-1 Convertible Preferred Stock          
Related Party Transaction [Line Items]          
Maximum potential shares         30,188lode_LongTermPurchaseCommitmentMaximumPotentialConsideration
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
/ us-gaap_StatementClassOfStockAxis
= lode_SeriesAOnePreferredStockMember
Related Party Leases | Common Stock          
Related Party Transaction [Line Items]          
Maximum potential shares         46,400,000lode_LongTermPurchaseCommitmentMaximumPotentialConsideration
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_AffiliatedEntityMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
Principal Owner          
Related Party Transaction [Line Items]          
Liability related for tax indemnification agreement   3,167,756us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_PrincipalOwnerMember
4,094,349us-gaap_GuaranteeObligationsCurrentCarryingValue
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_PrincipalOwnerMember
   
Kappes, Cassiday & Associates          
Related Party Transaction [Line Items]          
Amount of related party transaction   14,667us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lode_KappesCassidayAndAssociatesMember
49,504us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lode_KappesCassidayAndAssociatesMember
332,532us-gaap_RelatedPartyTransactionAmountsOfTransaction
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lode_KappesCassidayAndAssociatesMember
 
Purchase of properties, plant and equipment       300,000us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= lode_KappesCassidayAndAssociatesMember
 
Other Income          
Related Party Transaction [Line Items]          
Decrease in Loss Contingency due to Lapse of Indemnity   1,000,000lode_DecreaseinLossContingencyduetoLapseofIndemnity
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherIncomeMember
     
Services Related to Consulting | Robert Reseigh          
Related Party Transaction [Line Items]          
Purchases from related party   $ 15,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
/ us-gaap_RelatedPartyTransactionAxis
= lode_ServicesRelatedtoConsultingMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= us-gaap_DirectorMember