Loan Date Debt Instrument, Issuance Date Maturity Date Debt Instrument, Maturity Date Estimated useful lives Property and equipment, net Property, plant and equipment, gross Weighted Average Remaining Contractual Life (in years), Forfeited Weighted Average Remaining Contractual Life (in years), Exercised Weighted Average Remaining Contractual Life (in years), Granted Weighted Average Exercise Price Per Share, Outstanding at June 30,2020 Weighted Average Exercise Price Per Share, Forfeited Weighted Average Exercise Price Per Share, Exercised Weighted Average Exercise Price Per Share, Granted Weighted Average Exercise Price Per Share,Outstanding at December 31, 2020 Schedule of Weighted Average Assumptions Relating to the Valuation of Stock Options Schedule of Stock Options Activity Schedule of Unvested Restricted Common Stock Unit Awards Activity Members' Capital, Senior Priority Units, Beginning Balance (in units) Members' Capital, Senior Priority Units, Ending Balance (in units) Members' Capital, Preferred Units, Beginning Balance (in units) Members' Capital, Preferred Units, Ending Balance (in units) Members' Capital, Common Units, Beginning Balance (in units) Members' Capital, Common Units, Ending Balance (in units) Members' Capital, Beginning Balance Members' Capital, Ending Balance Beginning Balance (in shares) Additional Paid - In Capital [Member] Total Members' Capital [Member] Member Units [Member] Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for GGHI Common Stock (in shares/units) Contribution of GGH Common Units for GGHI Common Stock (in shares/units) Contribution of GGH Common Units for GGHI Common Stock Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for GGHI Common Stock Number Of Common Units Contributed In Exchange For Common Stock Number of common units contributed in exchange for common stock. Value Of Common Units Contributed In Exchange For Common Stock Value of common units contributed in exchange for common stock. Value Of Units And Notes Payable Contributed In Exchange For Common Stock Value of units and notes payable contributed in exchange for common stock. Number Of Units And Notes Payable Contributed In Exchange For Common Stock Number of units and notes payable contributed in exchange for common stock. Ending Balance (in shares) Ending Balance Limited Liability Company L L C Senior Priority Unit Outstanding Number of senior priority units of ownership outstanding of a limited liability company (LLC). Beginning Balance Preferred Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Accumulated Deficit [Member] Senior Priority Units [Member] Preferred Units [Member] Common Units [Member] Entity Tax Identification Number Entity Incorporation, State or Country Code Investors obligation to purchase own issued and outstanding shares Investors Obligation To Purchase Own Issued And Outstanding Shares Investors Obligation To Purchase Own Issued And Outstanding Shares Maximum class A common stock and class B common stock shares in excess of the exchange cap Maximum Class A Common Stock And Class B Common Stock Shares In Excess Of The Exchange Cap Maximum class A common stock and class B common stock shares in excess of the exchange cap Debt instrument overallotment percentage Proceeds from common stock purchase agreement Proceeds From Common Stock Purchase Agreement Proceeds From Common Stock Purchase Agreement Debt Instrument Overallotment Percentage Debt Instrument Overallotment Percentage. Notes Payable Notes payable to related party Total Purchase agreement, Description Debt Instrument, Payment Terms Debt Instrument Measurement input Debt Instrument, Measurement Input Stock issued during period shares, Stock split Senior notes, term Debt Instrument, Term Senior notes offering value Senior Notes Senior Notes, Total Discount rate Discount Rate Discount Rate Common Stock Purchase Agreement and Registration Rights Agreement [Member] Common Stock Purchase Agreement and Registration Rights Agreement [Member] Common Stock Purchase Agreement and Registration Rights Agreement Exposure under guarantee Guarantor Obligations, Maximum Exposure, Undiscounted Limited guaranty payment Guarantor Obligations, Current Carrying Value Document Information [Line Items] Document Information [Table] (Loss) gain on sale of digital assets Current Fiscal Year End Date Total Other Risks and Considerations Unusual or Infrequent Items, or Both, Disclosure [Text Block] Initial Financing Entity Incorporation, State or Country Code Entity File Number Entity File Number Document Transition Report Document Transition Report Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Entity Ex Transition Period Entity Emerging Growth Company Entity Small Business Entity Filer Category Entity Central Index Key Entity Registrant Name Document Quarterly Report Amendment Flag Document Type Document Quarterly Report Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Total Interest Expense, Total Income Tax Expense (Benefit), Total Entity Ex Transition Period Income Tax Expense (Benefit) Provision for income taxes Provision for income taxes Cryptocurrency mining. Cryptocurrency Mining [Member] Cryptocurrency Mining [Member] Power and capacity. Power And Capacity [Member] Power and Capacity [Member] Equity [Abstract] Equity [Abstract] Interest Expense Interest expense Balance Sheet Location [Domain] Balance Sheet Location [Domain] Related Party [Domain] Property, Plant and Equipment, Gross Miner equipment note A. Miner Equipment Note A [Member] Miner Equipment Note A [Member] Subsequent Event Type [Axis] Share-based Payment Arrangement, Option [Member] Common Stock Options [Member] Cash and Cash Equivalents, at Carrying Value, Total Payments to Acquire Investments, Total Other Nonrecurring (Income) Expense, Total Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total Increase (Decrease) in Accounts Payable, Total Selling, General and Administrative Expense, Total Marketing and Advertising Expense, Total Proceeds from issuance of preferred stock, net of stock issuance costs (in shares) Contribution of Preferred Units, Senior Priority Units, and notes payable to related party for GGHI Common Stock (in shares) Stock issued to purchase miners (in shares) Proceeds from stock options exercised (in shares) Proceeds from issuance of preferred stock, net of stock issuance costs New York State Department of Environmental Conservation [Member] New York state department of environmental conservation. Total operating costs and expenses Operating Costs and Expenses Conversion of Stock, Shares Converted Net income attributable to the member units units before the reorganization Document Fiscal Period Focus Entity Common Stock, Shares Outstanding Entity Shell Company Entity Interactive Data Current Entity Current Reporting Status Trading Symbol Security Exchange Name Title of 12(b) Security Local Phone Number City Area Code Entity Address, Postal Zip Code Miner facility infrastructure [Member] Net cash flow used in investing activities Net cash flow provided by operating activities Loss on environmental trust liability (Loss) gain on sale of digital assets Deferred income taxes Depreciation and amortization Proceeds from finance lease obligations Proceeds From Finance Lease Obligations Proceeds From Finance Lease Obligations Net cash flow provided by financing activities Entity Address, State or Province Entity Address, State or Province Entity Address, City or Town Entity Address, City or Town Entity Address, Address Line One Entity Address, Address Line One Entity Tax Identification Number Proceeds from Lines of Credit, Total Earnings Per Share, Diluted, Total Deferred Income Tax Expense (Benefit), Total Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Common Stock, Shares, Outstanding, Ending Balance Common Stock, Shares, Outstanding, Beginning Balance Asset Retirement Obligations, Noncurrent, Total Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred Stock, Value, Issued, Total Cost of Revenue, Total Weighted Average Number of Shares Outstanding, Basic, Total Accounts Payable, Current, Total Notes Payable, Current, Total Effective Income Tax Rate Reconciliation, Percent, Total Gain (Loss) on Disposition of Assets, Total Accrued Liabilities, Current, Total Common Stock, Shares, Issued, Total Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Purchase Obligation, Total Proceeds from Sale, Maturity and Collection of Investments, Total Deferred Income Tax Liabilities, Net, Total Accounts Receivable, after Allowance for Credit Loss, Current, Total Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Increase (Decrease) in Prepaid Expense and Other Assets, Total Proceeds from Notes Payable, Total Cover [Abstract] Document Type Amendment Flag Entity Registrant Name Entity Central Index Key Entity Small Business Entity Emerging Growth Company Entity Filer Category Statement of Financial Position [Abstract] Less: Current portion Liabilities, Current Total current liabilities Accrued Income Taxes, Current Income taxes payable Increase (Decrease) in Accrued Liabilities, Total Earnings Per Share, Basic, Total Long-term Line of Credit, Total Share-based Payment Arrangement, Noncash Expense, Total Prepaid Expense, Current, Total Depreciation, Total Deposit Assets, Total Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Deferred Revenue, Current, Total APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Preferred Stock, Shares Issued, Total Asset Retirement Obligation, Total Finance Lease, Liability, Total Revenues, Total Finance Lease, Liability, Current Finance lease obligation, current portion Notes Payable, Related Parties, Current Notes payable—related party Commitments and Contingencies COMMITMENTS AND CONTINGENCIES (NOTE 11) Liabilities, Noncurrent [Abstract] LONG-TERM LIABILITIES: Notes Payable, Noncurrent Total Notes payable, net of current portion Asset Retirement Obligations, Noncurrent Asset retirement obligations Environmental trust liability. Environmental Trust Liability Environmental trust liability Deferred Income Tax Liabilities, Net Deferred tax liability Finance Lease, Liability, Noncurrent Finance lease obligation, net of current portion Common Stock [Member] Common Stock Preferred Stock [Member] Preferred Stock Additional Paid-in Capital [Member] Payments of Stock Issuance Costs Payment of stock issuance costs Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOW FROM OPERATING ACTIVITIES: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash flow from operating activities: Depreciation Depreciation expense Depreciation Asset Retirement Obligation, Accretion Expense Accretion Accretion of asset retirement obligations Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Accounts Payable Accounts payable Increase decrease in accrued emissions. Increase Decrease In Accrued Emissions Accrued emissions Increase (Decrease) in Accrued Liabilities Accrued expenses Increase Decrease In Emissions Credits Or Carbon Offsets Increase Decrease In Emissions Credits Or Carbon Offsets Emissions credits/carbon offsets Increase (Decrease) in Prepaid Expense and Other Assets Prepaids and other assets Liabilities Total liabilities Stockholders' Equity Attributable to Parent [Abstract] STOCKHOLDERS' EQUITY: Preferred Stock, Value, Issued Preferred stock Common Stock, Value, Issued Common stock Additional Paid in Capital Additional paid-in capital Members' Capital Members' capital Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Statement [Line Items] Statement [Line Items] Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net of accumulated depreciation Less: Accumulated depreciation Preferred Stock, Par or Stated Value Per Share Preferred stock, Par or stated value per share Preferred stock, par or stated value per share Preferred Stock, Shares Authorized Preferred stock, Shares authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, Shares issued Preferred Stock, Shares Outstanding Preferred stock, Shares outstanding Common Stock, Par or Stated Value Per Share Common stock, Par or stated value per share Common stock, par or stated value per share Common Stock, Shares Authorized Common stock, Shares authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, Shares issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, Shares outstanding Common stock oustanding Members capital outstanding units. Members Capital Outstanding Units Members capital, Outstanding units Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Income Statement [Abstract] Total other expense, net Net Income (Loss) Attributable to Parent Net income NET INCOME (LOSS) AND TOTAL COMPREHENSIVE INCOME (LOSS) Net income (loss) Gain (Loss) on Extinguishment of Debt, Total Depreciation, Depletion and Amortization, Nonproduction, Total Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total Assets [Abstract] ASSETS Assets, Current [Abstract] CURRENT ASSETS: Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS—end of year CASH AND CASH EQUIVALENTS—beginning of year Cash and cash equivalents Digital assets. Digital Assets Digital assets Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable Prepaid Expense, Current Prepaid expenses Emissions credits. Emissions Credits Emissions credits Miner equipment deposits Miner Equipment Deposits Miner equipment deposits Assets, Current Total current assets Carbon offset credits. Carbon Offset Credits Carbon offset credits Security Deposit Fuel deposits Assets, Noncurrent [Abstract] LONG-TERM ASSETS: Property, Plant and Equipment, Net Property and equipment, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Right-of-use assets, net Right of use asset at the lease commencement date Deposit Contracts, Assets Deposit Contracts, Assets Project deposit Other long term assets. Other Long Term Assets Other long-term assets Assets Total assets Liabilities and Equity [Abstract] STOCKHOLDERS' EQUITY: Liabilities, Current [Abstract] CURRENT LIABILITIES: Accounts Payable, Current Accounts payable Gas Purchase Payable, Current Natural gas payable Accrued Utilities, Current Accrued emissions expense Accrued Liabilities, Current Accrued expenses Accrued interest expense on related party, current portion. Accrued Interest Expense On Related Party, Current Portion Accrued interest expense —related party Deferred Revenue, Current Deferred revenue Notes Payable, Current Note payable, current portion Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest INCOME (LOSS) BEFORE INCOME TAXES Earnings Per Share [Abstract] Earnings per share: Earnings Per Share, Basic Basic Earnings Per Share, Diluted Diluted Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Common Unit, Outstanding Common units, Outstanding Common units, outstanding Limited Liability Company (LLC) Preferred Unit, Outstanding Partners' Capital Account, Exchanges and Conversions Partners capital account, Exchange and conversions Conversion of notes payable to senior priority units—tranche 1 Stock Issued During Period, Shares, Conversion of Convertible Securities Stock issued during period shares, Conversion of convertible securities Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Impairment of Long-Lived Assets Oil and Gas Properties Policy [Policy Text Block] Natural Gas Payable Asset Retirement Obligation [Policy Text Block] Asset Retirement Obligations Environmental trust liability. Environmental Trust Liability [Policy Text Block] Environmental Trust Liability Revenue from Contract with Customer [Policy Text Block] Revenue Recognition Income Tax, Policy [Policy Text Block] Income Taxes Advertising Cost [Policy Text Block] Advertising and Promotion Costs Recent accounting pronouncements not yet adopted. Recent Accounting Pronouncements Not Yet Adopted [Policy Text Block] Recent Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements, Adopted Basis of presentation and principles of consolidation [policy text block]. Basis Of Presentation And Principles Of Consolidation [Policy Text Block] Basis of Presentation and Principles of Consolidation Use of Estimates, Policy [Policy Text Block] Use of estimates Significant accounting policies [policy text block]. Significant Accounting Policies [Policy Text Block] Significant Accounting Policies Carbon offset credits [policy text block]. Carbon Offset Credits [Policy Text Block] Carbon Offset Credits Lessee, Leases [Policy Text Block] Leases Crytocurrency mining cost of revenue [policy text block]. Crytocurrency Mining Cost Of Revenue [Policy Text Block] Cryptocurrency Mining Cost of Revenue Power and capacity cost of revenue [policy text block]. Power And Capacity Cost Of Revenue [Policy Text Block] Power and Capacity Cost of Revenue Selling, General and Administrative Expenses, Policy [Policy Text Block] Selling, General, and Administrative Expenses Share-based Payment Arrangement [Policy Text Block] Stock-Based Compensation Earnings Per Share, Policy [Policy Text Block] Earnings Per Share Schedule of Asset Retirement Obligations [Table Text Block] Summary of Asset Retirement Obligations Property, Plant and Equipment [Table Text Block] Summary of Property and Equipment, Net Schedule of Debt [Table Text Block] Summary of Notes Payable Schedule of Maturities of Long-term Debt [Table Text Block] Summary of Future Maturities of Notes Payable Schedule of Related Party Transactions [Table Text Block] Summary of notes payable to related party Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of basic earnings and diluted per share of common stock Limited Liability Company (LLC) Preferred Unit, Issued Preferred unit, issued Limited Liability Company (LLC) Preferred Unit, Issuance Value Preferred unit, issuance value Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Greenidge blocker corp. Greenidge Blocker Corp [Member] Greenidge Blocker Corp [Member] Asset Retirement Obligation Ending Balance Beginning Balance Asset retirement obligation GGHI Class B Common Stock [Member] GGHI Class B Common Stock Accounts Receivable, Allowance for Credit Loss, Writeoff Accounts receivable write off as uncollectible Deposit Assets Cash deposit Percentage of annual emission expense and credit in the following year. Percentage Of Annual Emission Expense And Credit In The Following Year Percentage of annual emission expense and credit in the following year Emissions expense .. Award Type [Axis] Award Type [Domain] Restricted Stock Units (RSUs) [Member] Stock Issued During Period, Shares, New Issues Stock issued during period, Shares Stock Issued During Period, Value, New Issues APIC, Share-based Payment Arrangement, Increase for Cost Recognition Stock-based compensation expense Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised Stock Issued During Period, Value, Stock Options Exercised Proceeds from stock options exercised Stock Issued During Period, Shares, Purchase of Assets Stock Issued During Period, Value, Purchase of Assets Partners' Capital Account, Acquisitions Partners capital account, Acquisitions Partners capital account, acquisitions Notes Payable, Related Parties, Noncurrent Notes payable Income Statement [Abstract] Revenues [Abstract] REVENUE: Revenues Total revenue Operating Costs and Expenses [Abstract] OPERATING COSTS AND EXPENSES Cost of Revenue Cost of revenue Selling, General and Administrative Expense Selling, general, and administrative expenses Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Operating Income (Loss) Income (loss) from operations Nonoperating Income (Expense) [Abstract] OTHER INCOME (EXPENSE), NET: Impairment of Long-Lived Assets to be Disposed of Impairment Loss Impairment loss on digital assets Impairment loss on digital assets Interest expenses. Interest Expenses Interest expense Interest Expense, Related Party Interest expense—related party Gain (Loss) on Disposition of Assets Gain (Loss) on Extinguishment of Debt Gain (loss) on environmental trust liability Other Nonrecurring (Income) Expense Other (expense) income, net Nonoperating Income (Expense) Proceeds from Lines of Credit Net proceeds from new line of credit Notes payable interest rate at 8% with due june 2021. Notes Payable Interest Rate At 8 With Due June 2021 [Member] Note payable to a related party due June 2021 [Member] Notes payable interest rate at 8% with due may 2021. Notes Payable Interest Rate At 8 With Due May 2021 [Member] Note payable to a related party due May 2021 [Member] Financial institution. Financial Institution [Axis] Financial institution. Financial Institution [Domain] Empire pipeline incorporated. Empire Pipeline Incorporated [Member] Notes Payable Converted Into Senior Priority Units On Tranche 1. Notes Payable Converted Into Senior Priority Units On Tranche 1 [Member] Notes payable converted into Senior Priority Units—Tranche 1 [Member] Debt Instrument [Line Items] Notes Payable, Related Parties Notes payable to related party Increase (Decrease) in Notes Payable, Related Parties, Current Less: Current Portion Schedule of Stock by Class [Table] Class of Stock [Line Items] Capital Units, Authorized Capital units, authorized Shares Issued, Price Per Share Shares issued, Price per share Shares issued, Price per share Proceeds from Issuance of Private Placement Proceeds from issuance of private placement Proceeds from issuance of private placement Common Stock, Voting Rights Common Stock, voting rights Dividends, preferred stock, paid-in-kind percentage. Dividends, Preferred Stock, Paidinkind Percentage Dividends, preferred stock, paid-in-kind percentage Common shares initial conversion price. Common Shares Initial Conversion Price Common shares initial conversion price Preferred Stock, Liquidation Preference Per Share Preferred Stock, liquidation preference per share Share-based Compensation Arrangement by Share-based Payment Award, Shares Purchased for Award Shares based payment arrangement, Shares purchased for award Shares based payment arrangement, shares purchased for award Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares based payment arrangement, Equity instrument other than option, Grants in period Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Shares based payment arrangement, Equity instrument other than option, Vested in period Shares based payment arrangement, equity instrument other than option, vested in period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Unvested at June 30, 2021 Unvested at December 31, 2020 Shares based payment arrangement, Equity instrument other than option, Non vested units Shares based payment arrangement, equity instrument other than option, non vested units Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Shares based payment arrangement, Vesting rights percentage Shares based payment arrangement, vesting rights percentage Common units voting rights. Common Units Voting Rights Common units, Voting rights Common units, voting rights Share-based Payment Arrangement, Expense Shares based compensation, Expenses Stock-based compensation expense Common Unit, Issued Common units, Issued Common units, issued Preferred units voting rights. Preferred Units Voting Rights Preferred units, Voting rights Preferred units, voting rights Number of tranche. Number Of Tranche Number of tranche Number of tranche Limited liability company llc senior priority unit voting rights. Limited Liability Company LLC Senior Priority Unit Voting Rights Senior priority units, Voting rights Senior priority units, voting rights Common Class A [Member] Common Class A Common Class B [Member] Common Class B Series A Redeemable Convertible Preferred Stock [Member] Series A Redeemable Convertible Preferred Stock Sale of Stock [Axis] Sale of Stock [Domain] Private Placement [Member] Private Placement Limited Liability Company LLC Common Units [Member] Limited Liability Company LLC Common Units Limited Liability Company LLC Senior Priority Unit [Member] Limited Liability Company LLC Senior Priority Unit Plan Name [Axis] Plan Name [Domain] Equity Incentive Plan [Member] Equity Incentive Plan Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Basis of presentation and use of estimates. Basis Of Presentation And Use Of Estimates. [Policy Text Block] Basis of Presentation and Use of Estimates Consolidation, Policy [Policy Text Block] Principles of Consolidation Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Accounts Receivable [Policy Text Block] Accounts Receivable Intangible Assets, Finite-Lived, Policy [Policy Text Block] Digital Assets Fuel deposits. Fuel Deposits [Policy Text Block] Fuel Deposits Project deposit. Project Deposit [Policy Text Block] Project Deposit Environmental Cost, Expense Policy [Policy Text Block] Emissions Expense and Credits Miner equipment deposits. Miner Equipment Deposits [Policy Text Block] Miner Equipment Deposits Property, Plant and Equipment, Policy [Policy Text Block] Property and Equipment Emissions Expense Emissions expense Discount rate on asset retirement obligations. Discount Rate On Asset Retirement Obligations Discount rate on asset retirement obligations Discount rate on environmental trust liability during current period. Discount Rate On Environmental Trust Liability During Current Period Discount rate on environmental trust liability during current period Long-term Line of Credit Line of credit Long-term Line of Credit Revenue term period . Revenue Term Period Revenue term period Marketing and Advertising Expense Advertising and promotional costs Stock Issued During Period, Shares, Acquisitions Shares issued in exchange for acquisition of ownership interests Shares issued in exchange for acquisition of ownership interests Stock Issued During Period, Shares, Stock Splits Number of shares after split Stock issued during period shares, Stock split Voluntary carbon offset credits amount. Coal ash impoundment [Member] Construction in Progress [Member] Construction in progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Payments to Acquire Investments Deposits on miner equipment Proceeds from Sale of Investment Projects Project deposit Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] CASH FLOW FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities Proceeds from Issuance of Preferred Stock and Preference Stock Proceeds from issuance of  preferred stock, net of issuance costs Proceeds from Stock Options Exercised Proceeds from stock options exercised Repayments of Notes Payable Principal payments on notes payable Proceeds from Notes Payable Proceeds from on notes payable Repayments of Long-term Capital Lease Obligations Repayments of capital lease obligations Cash and Cash Equivalents, Period Increase (Decrease) CHANGE IN CASH AND CASH EQUIVALENTS Interest Paid, Excluding Capitalized Interest, Operating Activities SUPPLEMENTAL DISCLOSURES: CASH PAID FOR INTEREST Other Noncash Investing and Financing Items [Abstract] NON-CASH INVESTING AND FINANCING TRANSACTIONS: Miner deposits moved into property and equipment. Miner Deposits Moved Into Property And Equipment Miner deposits moved into property and equipment Project deposits moved into property and equipment .. Project Deposits Moved Into Property And Equipment Project deposits moved into property and equipment Property and equipment purchases financed with note payable. Property And Equipment Purchases Financed With Note Payable Property and equipment purchases financed with note payable Property and equipment purchases in accounts payable. Property And Equipment Purchases In Accounts Payable Property and equipment purchases in accounts payable Property and equipment purchased with digital assets. Property And Equipment Purchased With Digital Assets Property and equipment purchased with digital assets Initial recognition of asset retirement obligations. Initial Recognition Of Asset Retirement Obligations Initial recognition of asset retirement obligations Notes payable principal converted to members' equity. Notes Payable Principal Converted To Members Equity Notes payable principal converted to members' equity Notes payable accrued interest converted to members' equity. Notes Payable Accrued Interest Converted To Members Equity Notes payable accrued interest converted to members' equity Deemed distribution of greenidge coin, LLC preferred units. Deemed Distribution Of Greenidge Coin LLC Preferred Units Deemed distribution of Greenidge Coin, LLC preferred units Contribution of greenidge coin, LLC preferred units. Contribution Of Greenidge Coin LLC Preferred Units Contribution of Greenidge Coin, LLC preferred units Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Organization and Description of Business Accounting Policies [Abstract] Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Notes Payable Leases [Abstract] Leases [Abstract] Lessee, Finance Leases [Text Block] Finance Lease Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Stockholders' Equity Note [Abstract] Stockholders' Equity Note Disclosure [Text Block] Stockholders Equity Members' Equity Notes Disclosure [Text Block] Members' Equity Retirement Benefits [Abstract] Compensation and Employee Benefit Plans, Other than Share-based Compensation [Text Block] Employee Benefit Plan Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Text Block] Equity Based Compensation Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Earnings Per Share [Text Block] Earnings Per Share Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Risks and Uncertainties [Abstract] Concentration Risk Disclosure [Text Block] Concentrations Other risks and consideration. Other Risks And Consideration [Text Block] Other Risks and Considerations Balance Sheet Location [Axis] Balance Sheet Location [Axis] Notes payable. Notes Payable [Member] Notes Payable [Member] Leases Leases [Table] Leases [Table] Leases Leases [Line Items] Leases [Line Items] Finance Lease, Liability Finance lease obligation Finance Lease Maturity Date Finance Lease Maturity Date Lease end date Schedule of Related Party Transactions, by Related Party [Table] Promissory note agreement. Promissory Note Agreement [Member] Related Party [Axis] Atlas [Member]. Atlas [Member] Related Party Transaction [Line Items] Repayments of Lines of Credit Repayments of lines of credit Property, Plant and Equipment, Useful Life Notes Payable Notes Payable Debt Instrument, Interest Rate, Stated Percentage Interest Rate Debt instrument, interest rate, stated percentage Debt Instrument, Face Amount Debt instrument, face amount Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Miner equipment note B. Miner Equipment Note B [Member] Miner Equipment Note B [Member] Miner equipment note C Miner equipment note C [Member] Long-term Purchase Commitment, Amount Long term purchase commitment, Amount Contractual obligation per month amount. Contractual Obligation Per Month Amount Contractual obligation, Per month amount Contract Terms. Contract Terms Contract terms Notice period for contract termination. Notice Period For Contract Termination Notice period for contract termination Initial period after which notice period for contract termination occurs. Initial Period After Which Notice Period For Contract Termination Occurs Initial period after which notice period for contract termination occurs Long-term Purchase Commitment, Minimum Quantity Required Long-term purchase commitment, Minimum quantity required Other committed secured debt on asset. Other Committed Secured Debt On Asset Committed secured financing on equipment amount Concentration Risk, Percentage Concentration risk percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Revenue Benchmark [Member] Sales Revenue Net [Member] Cost of Goods and Service Benchmark [Member] Accounts Receivable [Member] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Customer Concentration Risk [Member] Supplier Concentration Risk [Member] Customer [Axis] Customer [Domain] One major customer. One Major Customer [Member] One Major Customer [Member] Operator customer. Operator Customer [Member] Operator Customer [Member] Subsequent Event [Table] Miner Equipment Note C [Member] Miner equipment note D Miner equipment note D [Member] Miner Equipment Note D [Member] Miner equipment note E And H Miner equipment note E And H [Member] Miner Equipment Note E And H [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Equipment finance agreement. Equipment Finance Agreement [Member] Equipment Finance Agreement [Member] Maturities of Long-term Debt [Abstract] Long-Term Debt, Maturity, Year One 2021 Long-Term Debt, Maturity, Year Two 2022 Long-term Debt Total Principal borrowings Resctricted Common Stock units [Member] Resticted Common Stock Unit Tranche [Axis]. Tranche [Axis] Tranche. Tranche [Domain] Tranche One [Member] Tranche One Tranche Two [Member] Tranche Two Equity [Axis]. Equity [Axis] Equity [Domain]. Equity [Domain] Common Unit, Authorized Common units, Authorized Limited Liability Company (LLC) Preferred Unit, Authorized Preferred units, Authorized Limited liability company Llc senior priority unit authorized. Limited Liability Company LLC Senior Priority Unit Authorized Senior priority units units, Authorized Preferred units liquidation preference per unit. Preferred Units Liquidation Preference Per Unit Preferred units, Liquidation preference per unit Investment Company, Internal Rate of Return since Inception Cumulatively accrued rate of return on the investment Limited liability company llc senior priority unit liquidation preference value. Limited Liability Company LLC Senior Priority Unit Liquidation Preference Value Senior priority units, Liquidation preference value Schedule of Defined Benefit Plans Disclosures [Table] Defined contribution plan tranches. Defined Contribution Plan Tranches [Axis] Defined contribution plan tranches. Defined Contribution Plan Tranches [Domain] First salary deferral contribution. First Salary Deferral Contribution [Member] Second salary deferral contribution. Second Salary Deferral Contribution [Member] Defined Benefit Plan Disclosure [Line Items] Defined Contribution Plan, Employer Matching Contribution, Percent of Match Employer matching contribution percent of match Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Employer matching contribution percent of employees gross pay Defined Contribution Plan, Cost Matching contributions recognized as expense Defined Contribution Plan, Employer Discretionary Contribution Amount Non elective contributions to the plan Share-based Payment Arrangement, Disclosure [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Unvested at June 30, 2021 Unvested at December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Weighted Average fair value of grants Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding at June 30, 2020 Outstanding at December 31, 2020 Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Stock issued to purchase miners Shares, Outstanding Limited Liability Company Common Unit [Member] Limited Liability Company Preferred Unit [Member] Limited Liability Company Senior Priority Unit [Member] AOCI Attributable to Parent [Member] Increase (Decrease) in Income Taxes Payable Income taxes payable Deferred Income Tax Expense (Benefit) Share-based Payment Arrangement, Noncash Expense Stock-based compensation expense Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Investing Activities [Abstract] CASH FLOW FROM INVESTING ACTIVITIES: Payments to acquire property and equipment. Payments To Acquire Property And Equipment Purchases of property and equipment Voluntary Carbon Offset Credits Amount Purchase of voluntary carbon offset credits Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Share based compensation arrangement,expiration period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting period Vesting period Stockholders' Equity Note, Stock Split Stockholders equity note stock split Stockholders equity note stock split Number of digital assets. Number Of Digital Assets Number of digital assets Income Statement Location [Axis] Income Statement Location [Domain] Cost of Sales [Member] Other income and expense. Other Income And Expense [Member] Credit Facility [Axis] Credit Facility [Domain] Letter of Credit [Member] Hash rate revenue. Hash Rate Revenue [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Greenidge Common Stock [Member] Greenidge Common Stock Geographical [Axis] Geographical [Domain] NEW YORK New York [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Digital Assets [Member] Digital Assets Impaired Long-Lived Assets Held and Used by Type [Axis] Impaired Long-Lived Assets Held and Used, Asset Name [Domain] Impairment Of Long Lived Assets [Member] Impairment Of Long Lived Assets Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Plant infrastructure. Plant Infrastructure [Member] Plant infrastructure [Member] Miners. Miners [Member] Miners [Member] Miner facility. Miner Facility [Member] Land [Member] Land [Member] Equipment [Member] Equipment [Member] Equipment [Member] Software Development [Member] Software [Member] Coal ash impoundment. Coal Ash Impoundment [Member] Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options vested and expected to vest as of June 30, 2021 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options vested and exercisable as of June 30, 2021 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options vested and expected to vest as of June 30, 2021 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options vested and exercisable as of June 30, 2021 Sharebased compensation arrangement by sharebased payment award options granted in period weighted average remaining contractual term. Sharebased Compensation Arrangement By Sharebased Payment Award Options Granted In Period Weighted Average Remaining Contractual Term Sharebased compensation arrangement by sharebased payment award options exercised in period weighted average remaining contractual term. Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercised In Period Weighted Average Remaining Contractual Term Sharebased compensation arrangement by sharebased payment award options forfeited in period weighted average remaining contractual term. Sharebased Compensation Arrangement By Sharebased Payment Award Options Forfeited In Period Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining Contractual Life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Options vested and expected to vest as of June 30, 2021 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Options vested and exercisable as of June 30, 2021 Disclosure Of Compensation Related Costs Sharebased Payments [Table] Disclosure Of Compensation Related Costs Sharebased Payments [Line Items] Common Stock, Capital Shares Reserved for Future Issuance Common stock reserved Common stock reserved for issuance Share based compensation arrangement by share based payment award equity instruments other than options grants in period fair value. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Fair Value Fair market value of the awards granted Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Unrecognized compensation cost Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Weighted average vesting period Share based compensation arrangement by share based payment award options grants in period fair value. Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Fair Value Fair market value of award, Options granted Title of Individual [Axis] Title of Individual [Domain] Two Thousand And Twenty One Equity Plan [Member] 2021 Equity Plan [Member] Selling, General and Administrative Expenses [Member] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected term (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected dividend yield Income Tax Disclosure [Table] Income Tax Disclosure [Line Items] Effective Income Tax Rate Reconciliation, Percent Effective income tax rate as a percentage Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive securities excluded from computation of earnings per share amount Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator Net income loss attributable to the member units before the reorganization. Net Income Loss Attributable To The Member Units Before The Reorganization Net Income (Loss) Available to Common Stockholders, Basic Net income attributable to Greenidge Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Denominator Weighted Average Number of Shares Outstanding, Basic Basic weighted average shares outstanding Incremental Common Shares Attributable to Dilutive Effect of Equity Forward Agreements Dilutive effect of equity awards Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Dilutive effect of convertible preferred stock Weighted Average Number of Shares Outstanding, Diluted Diluted weighted average shares outstanding Earnings Per Share, Basic and Diluted [Abstract] Earnings per share Purchase Obligation Purchase Obligation Subsequent Event Type [Domain] Subsequent Event [Member] Agreement. Agreement [Axis] Agreement. Agreement [Domain] Asset contribution and exchange agreement [Member]. Asset Contribution And Exchange Agreement [Member] Subsequent Event [Line Items] Stockholders' Equity Note, Stock Split, Conversion Ratio Stock split ratio Proceeds from Sale, Maturity and Collection of Investments Proceeds from potential investment Investment Interest Rate Investment, Interest rate Investment Maturity Date Investment maturity date Receivables payment terms. Receivables Payment Terms Receivables, Payment terms Greenidge generation holdings inc [Member]. Greenidge Generation Holdings Inc [Member] Receivable Type [Axis] Receivable [Domain] Notes Receivable [Member] Legal Entity [Axis] Entity [Domain]