XML 63 R47.htm IDEA: XBRL DOCUMENT
v3.19.2

Leases - Narrative (Details) | 3 Months Ended
--- | ---
Mar. 31, 2019 USD ($) $ / mo
Leases [Abstract] |
Monthly rent expense (in usd per month) | 750
Automatic annual increase in monthly rent expense (in usd per month) | 25
Incremental borrowing rate | 11.00%
Operating lease expense | $ | $ 2,250
Remaining lease term | 9 years 6 months

X
- Definition Lease, Remaining Lease Term + References No definition available. + Details
Name: | lode_LeaseRemainingLeaseTerm
Namespace Prefix: | lode_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, Operating Lease, Monthly Rent Expense + References No definition available. + Details
Name: | lode_LesseeOperatingLeaseMonthlyRentExpense
Namespace Prefix: | lode_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lessee, Operating Lease, Monthly Rent Expense, Automatic Annual Increase + References No definition available. + Details
Name: | lode_LesseeOperatingLeaseMonthlyRentExpenseAutomaticAnnualIncrease
Namespace Prefix: | lode_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: 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=77888399&loc=SL77918982-209971 + Details
Name: | us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant