Debt Disclosure [Abstract] Long-Term Debt Long-term Debt [Text Block] Equity [Abstract] Reconciliation of Transactions Under the ATM and Purchase Agreements Schedule of Stock by Class [Table Text Block] Asset Retirement Obligation Disclosure [Abstract] Long-Term Reclamation Liability and Retirement Obligation Asset Asset Retirement Obligation Disclosure [Text Block] Earnings Per Share [Abstract] Reconciliation of Numerator and Denominator Used in Basic and Diluted Computation of Net Loss Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Percentage of royalty obligations Percentage Net Smelter Return Royalty Percentage Net Smelter Return Royalty. Percentage of royalty obligations, majority are less than Net Smelter Return Royalty, Percentage Net Smelter Return Royalty, Percentage Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Statement of Financial Position [Abstract] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Property, Plant and Equipment [Abstract] Properties, Plant and Equipment and Assets Held for Sale Property, Plant and Equipment Disclosure [Text Block] Statement of Cash Flows [Abstract] OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Net Income (Loss) Attributable to Parent Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation, amortization, and depletion Depreciation, Depletion and Amortization Accretion of reclamation liability Accretion Expense Gain on sale of properties, plant, and equipment Gain (Loss) on Disposition of Property Plant Equipment Amortization of debt discounts and issuance costs Amortization of Debt Discount (Premium) Net loss on early retirement of long-term debt Gain (Loss) on Extinguishment of Debt Loss on make-whole liability Gain (Loss) On Purchase Of Membership Interests Make-Whole Liability Gain (Loss) On Purchase Of Membership Interests Make-Whole Liability Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses and other liabilities Increase (Decrease) in Accrued Liabilities NET CASH USED IN OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from principle payment on note receivable Proceeds from Collection of Notes Receivable Proceeds from sale of properties, plant, and equipment Proceeds from Sale of Property, Plant, and Equipment NET CASH PROVIDED BY INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Principal payments on long-term debt Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities Proceeds from long-term debt obligations (net of issuance costs) Proceeds from Issuance of Debt Proceeds from the issuance of common stock Proceeds from Issuance of Common Stock Common stock issuance costs Payments of Stock Issuance Costs NET CASH PROVIDED BY FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS, END OF PERIOD SUPPLEMENTAL CASH FLOW INFORMATION: Supplemental Cash Flow Information [Abstract] Cash paid for interest Income Taxes Paid Supplemental disclosure of non-cash investing and financing activities: Other Noncash Investing and Financing Items [Abstract] Issuance of common stock to pay for common stock issuance costs Stock Issued For Payment Of Debt Issuance Costs Stock Issued For Payment Of Debt Issuance Costs Issuance of common stock (in advance of close) to purchase membership interests Stock Issued For Purchase Membership Interests Stock Issued For Purchase Membership Interests Payment for purchase of property, plant, and equipment with prepaid deposits Fair Value of Assets Acquired Issuance of debt to purchase property, plant, and equipment Construction in Progress Expenditures Incurred but Not yet Paid Settlement of long-term debt obligations with prepaid deposits Notes Reduction Issuance of common stock for settlement of long-term debt obligations Stock Issued Issuance of common stock to purchase properties, plant, and equipment Noncash Investing And Financing Settlement Of Debt Through Transfer Of Fixed Assets Noncash Investing And Financing Settlement Of Debt Through Transfer Of Fixed Assets Debt issuance costs in accounts payable Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction ASSETS Assets [Abstract] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Assets held for sale, Net (Note 2) Assets Held-for-sale, Not Part of Disposal Group, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current MINERAL RIGHTS AND PROPERTIES, Net Mineral Properties, Net PROPERTIES, PLANT AND EQUIPMENT, Net (Note 2) Property, Plant and Equipment, Net RECLAMATION BOND DEPOSIT Deposits Assets, Noncurrent RETIREMENT OBLIGATION ASSET (Note 3) Asset Retirement Obligation, Legally Restricted Assets, Fair Value OTHER ASSETS Other Assets, Noncurrent TOTAL ASSETS Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses (Note 4) Accrued Liabilities, Current Long-term debt– current portion (Note 5) Long-term Debt and Capital Lease Obligations, Current Total current liabilities Liabilities, Current LONG-TERM LIABILITIES: Liabilities, Noncurrent [Abstract] Long-term debt (Note 5) Long-term Debt and Capital Lease Obligations Long-term reclamation liability (Note 3) Mine Reclamation and Closing Liability, Noncurrent Other liabilities Other Liabilities, Noncurrent Total long-term liabilities Liabilities, Noncurrent Total liabilities Liabilities COMMITMENTS AND CONTINGENCIES (Note 8) Commitments and Contingencies STOCKHOLDERS’ EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Preferred Stock; 50,000,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued Common stock, $.000666 par value, 790,000,000 shares authorized, 53,391,428 and 47,236,103 shares issued and outstanding at March 31, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity Attributable to Parent TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Stock options Employee Stock Option [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Senior Secured Debenture due 2021 Senior Secured Debenture due 2021 [Member] Senior Secured Debenture due 2021 [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Secured Debt Secured Debt [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Land Improvements Land Improvements [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Lucerne Property Lucerne Property [Member] Lucerne Property [Member] American Flat Property American Flat Property [Member] American Flat Property [Member] Ownership [Axis] Ownership [Axis] Ownership [Axis] Ownership [Domain] Ownership [Domain] [Domain] for Ownership [Axis] Comstock Mining LLC Comstock Mining LLC [Member] Comstock Mining LLC [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Tonogold Resources, Inc. Tonogold Resources, Inc. [Member] Tonogold Resources, Inc. [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Payments made to the company Payments to Acquire Equity Method Investments Proceeds used to reduce indebtedness Repayments of Long-term Debt Percentage interest in subsidiary Equity Method Investment, Ownership Percentage Required capital expenditures Payments to Acquire Property, Plant, and Equipment, To Earn Ownership Interest Payments to Acquire Property, Plant, and Equipment, To Earn Ownership Interest Required capital expenditure, maximum period Payments to Acquire Property, Plant, and Equipment, To Earn Ownership Interest, Maximum Period Payments to Acquire Property, Plant, and Equipment, To Earn Ownership Interest, Maximum Period Usage fee Rental Income, Nonoperating Royalty Revenue, Per Ton Processed Royalty Revenue, Per Ton Processed Royalty Revenue, Per Ton Processed Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Note Payable - GF Comstock 2 LP Note Payable - GF Comstock 2 LP [Member] Note Payable - GF Comstock 2 LP [Member] Line of Credit Line of Credit [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Interest rate Debt Instrument, Interest Rate, Stated Percentage Principal amount Debt Instrument, Face Amount Discount on issuance of debt Debt Instrument, Unamortized Discount Debt issuance costs Debt Issuance Costs, Gross Early repayment, make whole payment Debt Instrument, Early Repayment, Penalty Debt Instrument, Early Repayment, Penalty Initial periodic payment period Debt Instrument, Initial Periodic Payment Period Debt Instrument, Initial Periodic Payment Period Equity interest in subsidiaries pledged as collateral (as a percent) Debt Instrument, Collateral, Equity Interest In Subsidiary, Percent Debt Instrument, Collateral, Equity Interest In Subsidiary, Percent Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Long-term line of credit borrowing outstanding Long-term Line of Credit Unused borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Depreciation expense Depreciation Total Assets Held For Sale Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic and diluted weighted average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Net loss per common share: Earnings Per Share, Basic, Other Disclosures [Abstract] Net loss per common share – basic (in dollars per share) Earnings Per Share, Basic Net loss per common share – diluted (in dollars per share) Earnings Per Share, Diluted Mine Reclamation and Closing Liability [Roll Forward] Mine Reclamation and Closing Liability [Roll Forward] Mine Reclamation and Closing Liability [Roll Forward] Long-term reclamation liability — beginning of period Additional obligations incurred Asset Retirement Obligation, Liabilities Incurred Accretion of reclamation liability Asset Retirement Obligation Accretion Expense Accrued Asset Retirement Obligation, Accretion Expense Accrued. Long-term reclamation liability — end of period Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Restricted Stock [Member] Pelen LLC Pelen LLC [Member] Pelen LLC [Member] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] ATM Agreement At-the-market Offering Program (ATM Agreement) [Member] At-the-market Offering Program (ATM Agreement) [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] International Assets Advisory LLC International Assets Advisory LLC [Member] International Assets Advisory LLC [Member] Leviston Leviston [Member] Leviston [Member] Member Of Pelen, LLC [Member] Member Of Pelen, LLC [Member] Member Of Pelen, LLC [Member] Class of Stock [Line Items] Class of Stock [Line Items] Aggregate offering price, up to Common Stock, Aggregate Offering Price Common Stock, Aggregate Offering Price Commission paid (as a percent) Common Stock, Commission Paid, Percentage Common Stock, Commission Paid, Percentage Common stock, shares issued (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Membership interest subsequent to sale of shares Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest Share-based compensation, grant date fair value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Grants In Period Grant Date Fair Value. Required proceeds to be received by member to acquire membership interest Required Proceeds From Sale Of Stock To Acquire Membership Interest Required Proceeds From Sale Of Stock To Acquire Membership Interest Make-whole liability Accrued Make-Whole Membership Interest Expense, Current Accrued Make-Whole Membership Interest Expense, Current Number of shares issued (in shares) Stock Issued During Period, Shares, New Issues Value of shares issued Stock Issued During Period, Value, New Issues Net Loss Per Common Share Earnings Per Share [Text Block] Schedule of Long-Term Debt Schedule of Long-term Debt Instruments [Table Text Block] Segment Reporting [Abstract] Number of operating segments Number of Operating Segments Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Mining Mining [Member] Mining [Member] Real Estate Real Estate Segment [Member] Real Estate Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Revenue Revenues Costs and Expenses Costs and Expenses Operating Income (Loss) Operating Income (Loss) Other income (expense), net Nonoperating Income (Expense) NET LOSS Depreciation, Amortization, and Depletion Capital Expenditures Payments to Acquire Productive Assets Assets Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Financial Information Relating to Reportable Operating Segments and Reconciliation to Condensed Consolidated Totals Schedule of Segment Reporting Information, by Segment [Table Text Block] Document and Entity Information [Abstract] -- None. No documentation exists for this element. -- Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Organization, Consolidation and Presentation of Financial Statements [Abstract] Use of Estimates Use of Estimates, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Number of shares sold (in shares) Gross proceeds Proceeds Issuance of Common Stock, Gross Proceeds Issuance of Common Stock, Gross Fees Stock Issued During Period, Fees, New Issues Stock Issued During Period, Fees, New Issues Net proceeds Average price per share (in dollars per share) Shares Issued, Price Per Share Segment Reporting Segment Reporting Disclosure [Text Block] Reconciliation of the Aggregate Reclamation Liability Schedule of Other Noncurrent Liabilities [Table Text Block] Schedule of Other Noncurrent Liabilities [Table Text Block] Reconciliation of the Aggregate Retirement Obligation Asset Schedule of Asset Retirement Obligations [Table Text Block] Subsequent Events Subsequent Events [Text Block] Interim Financial Statements Quarterly Financial Information [Text Block] Payables and Accruals [Abstract] Accrued Expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Schedule of Long Lived Assets Held-for-sale [Table] Schedule of Long Lived Assets Held-for-sale [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposal Group, Held-for-sale, Not Discontinued Operations Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale by Asset Type [Axis] Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale, Name [Domain] Industrial Park (Land and water rights) Industrial Park [Member] Industrial Park [Member] Daney Ranch (Land and buildings) Daney Ranch [Member] Daney Ranch [Member] Gold Hill Hotel (Land and buildings) Gold Hill Hotel [Member] Gold Hill Hotel [Member] Long Lived Assets Held-for-sale [Line Items] Long Lived Assets Held-for-sale [Line Items] Line of Credit Facility [Table] Line of Credit Facility [Table] Purchase Agreement Purchase Agreement [Member] Purchase Agreement [Member] Leviston Resources LLC Leviston Resources LLC [Member] Leviston Resources LLC [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Annual gold-equivalent production (in ounces) Annual Targeted Production Rate of Gold-Equivalent-Ounces Annual Targeted Production Rate of Gold-Equivalent-Ounces Accumulated deficit Net loss Net cash used in operating activities Current assets Current liabilities Current assets in excess of current liabilities Current Assets in Excess of Current Liabilities Current Assets in Excess of Current Liabilities Remaining amount available for issuance under agreement Common Stock, Value, Remaining Amount Available for Issuance Common Stock, Value, Remaining Amount Available for Issuance Reverse stock split conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Schedule of Assets Held for Sale Disclosure of Long Lived Assets Held-for-sale [Table Text Block] Accrued interest expense Interest Payable, Current Accrued make-whole for acquisition of membership interests (Note 6) Accrued personal property tax Accrual for Taxes Other than Income Taxes Accrued Northern Comstock Joint Venture Due to Affiliate, Current Accrued Board of Directors fees Accrued Directors Fees Accrued Directors Fees Accrued payroll costs Accrued Salaries Accrued vendor liabilities Accrued Vendor Liabilities Accrued Vendor Liabilities Other accrued expenses Other Accrued Liabilities Total accrued expenses Accrued Liabilities and Other Liabilities Note Payable (GF Comstock 2) Caterpillar Equipment Consolidated Note Payable (Caterpillar Equipment Consolidated) [Member] Note Payable (Caterpillar Equipment Consolidated) [Member] Total debt Long-term Debt, Gross Less: long-term debt discounts and issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Total debt, net of discounts and issuance costs Long-term Debt Less: current maturities Long-term Debt, Current Maturities Long-term debt, net of discounts and issuance costs Long-term Debt, Excluding Current Maturities Interest rate Monthly installments Debt Instrument, Periodic Payment, Principal Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Retirement obligation asset — beginning of period Asset Retirement Obligation Additional obligations incurred Costs Incurred, Asset Retirement Obligation Incurred Amortization of retirement obligation asset Asset Retirement Obligation, Accretion Expense Retirement obligation asset — end of period Schedule of Accrued Expenses Schedule of Accrued Liabilities [Table Text Block] Income Statement [Abstract] REVENUES Revenues [Abstract] Revenue - mining Gold Products and Services Revenue Revenue - real estate Revenue from Hotels Total revenues COSTS AND EXPENSES Costs and Expenses [Abstract] Costs applicable to mining revenue Cost of Gold Products and Services Real estate operating costs Direct Costs of Hotels Exploration and mine development Exploration Expense, Mining Mine claims and costs Costs of Mineral Rights Costs of Mineral Rights Environmental and reclamation Environmental Remediation Expense General and administrative General and Administrative Expense Total costs and expenses LOSS FROM OPERATIONS OTHER INCOME (EXPENSE) Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Other income (expense) Other Nonoperating Income (Expense) Total other expense, net LOSS BEFORE INCOME TAXES Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest INCOME TAXES Income Tax Expense (Benefit) Weighted average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding — diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted