Document And Entity Information
Equity Method Investments [Policy Text Block]
Marketable Securities, Policy [Policy Text Block]
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 1 - Restatement of Previously Issued Financial Statements
Provision for (benefit from) income taxes
Provision for income taxes
Provision for income taxes
Balance at end of period
Note 2 - Description of Business and Summary of Significant Accounting Policies
Note 3 - Acquisitions and Discontinued Operations
Note 4 - Fair Value Measurements
Note 5 - Derivative Instruments
Note 6 - Leases
us-gaap_PaymentsToAcquireRealEstateHeldForInvestment
Payment for Acquisition, Real Estate, Held-for-Investment
Note 7 - Property and Equipment
us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)
Note 8 - Goodwill and Other Intangibles
Amounts attributable to Genie Energy Ltd. common stockholders
Note 9 - Other Current Assets and Other Assets
Note 10 - Investments
Note 11 - Accrued Expenses and Other Current Liabilities
us-gaap_Investments
Investments
Note 12 - Debt
Note 13 - Income Taxes
Note 15 - Stock-Based Compensation
Note 16 - Variable Interest Entity
Note 18 - Commitments and Contingencies
Note 19 - Related Party Transactions
Trade accounts receivable
us-gaap_IncreaseDecreaseInAccountsReceivable
Note 20 - Business Segment and Geographic Information
Note 21 - Quarterly Financial Data (Unaudited)
Note 1 - Restatement of Previously Issued Financial Statements - Summary of Effect of Errors (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Disaggregated Revenue (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Cash, Cash Equivalents, and Restricted Cash (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Inventories (Details)
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Note 2 - Description of Business and Summary of Significant Accounting Policies - Useful Life of Property, Plant and Equipment (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Earnings Per Share (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Summary of Concentration Risks (Details)
Note 2 - Description of Business and Summary of Significant Accounting Policies - Schedule of Allowance for Doubtful Accounts (Details)
Note 3 - Acquisitions and Discontinued Operations - Schedule of Acquisitions (Details)
Note 3 - Acquisitions and Discontinued Operations - Schedule of Acquisitions (Details) (Parentheticals)
Note 3 - Acquisitions and Discontinued Operations - Schedule of Discontinued Operations (Details)
Note 3 - Acquisitions and Discontinued Operations - Schedule of Cash Flows of Discontinued Operations (Details)
Note 4 - Fair Value Measurements - Schedule of Assets and Liabilities (Details)
Note 4 - Fair Value Measurements - Schedule of Assets and Liabilities (Details) (Parentheticals)
Note 5 - Derivative Instruments - Schedule Outstanding Volumes (Details)
Note 5 - Derivative Instruments - Schedule of Derivative Instruments (Details)
Note 6 - Leases - Schedule of Operating Lease Assets and Liabilities (Details)
Note 6 - Leases - Schedule of Operating Lease Assets and Liabilities (Details) (Parentheticals)
Note 6 - Leases - Schedule of Supplemental Cash Flow Information (Details)
Note 6 - Leases - Schedule of Maturity (Details)
Note 7 - Property and Equipment - Schedule of Property and Equipment (Details)
Note 8 - Goodwill and Other Intangibles - Schedule of Goodwill (Details)
Net income (loss)
us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax
Note 8 - Goodwill and Other Intangibles - Schedule of Intangible Assets (Details)
Note 9 - Other Current Assets and Other Assets - Schedule of Other Assets (Details)
Note 10 - Investments - Schedule of Investments (Details)
Note 10 - Investments - Schedule of Equity Securities without Readily Determinable Fair Value (Details)
Note 11 - Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses (Details)
Employee-related expenses
us-gaap_LaborAndRelatedExpense
Note 11 - Accrued Expenses and Other Current Liabilities - Schedule of Other Current Liabilities (Details)
Note 12 - Debt - Schedule of Debt (Details)
Note 13 - Income Taxes - Components of Income Before Income Tax (Details)
Note 13 - Income Taxes - Components of Deferred Income Tax Assets (Details)
Note 13 - Income Taxes - Provision for (Benefit from) Income Taxes (Details)
Note 13 - Income Taxes - Reconciliation of Income Tax (Details)
Note 13 - Income Taxes - Summary of Valuation Allowance (Details)
Note 13 - Income Taxes - Summary of Unrecognized Tax Benefits (Details)
Note 13 - Income Taxes - Cash Taxes Paid (Details)
Income taxes payable
Changes in income tax payable
Note 15 - Stock-based Compensation - Summary of Grants of Restricted Shares (Details)
Note 16 - Variable Interest Entity - Schedule of Aggregate Net Funding (Details)
Note 16 - Variable Interest Entity - Schedule of Variable Interest Entity Amounts (Details)
Note 18 - Commitments and Contingencies - Schedule of Purchase Commitments (Details)
Note 19 - Related Party Transactions - Schedule of Income (Expense) (Details)
Note 19 - Related Party Transactions - Schedule of Receivables and Payables (Details)
Note 20 - Business Segment and Geographic Information - Schedule of Operating Results (Details)
Note 20 - Business Segment and Geographic Information - Schedule of Total Assets Reconciliation (Details)
Note 20 - Business Segment and Geographic Information - Schedule of Foreign Revenues (Details)
Note 21 - Quarterly Financial Data (Unaudited) - Quarterly Financial Data (Details)
Lease Agreements [Member]
Inventory
us-gaap_IncreaseDecreaseInInventories
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_SharesOutstanding
BALANCE (in shares)
BALANCE (in shares)
Letter of Credit [Member]
Segment Reporting [Text Block]
Trade accounts payable, accrued expenses and other current liabilities
us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities
Segment Reporting [Table Text Block]
Current liabilities of discontinued operations
Current liabilities of discontinued operations
Noncurrent liabilities of discontinued operations
Noncurrent liabilities of discontinued operations
Preferred stock, $0.01 par value; authorized shares—10,000: Series 2012-A, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at June 30, 2025 and December 31, 2024
Total liabilities
Liabilities
TOTAL LIABILITIES
Total liabilities
Liabilities [Abstract]
Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Total liabilities and equity
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND EQUITY
Total liabilities and equity
Pledged Status [Domain]
Segment Reporting [Table]
Prepaid expenses
us-gaap_IncreaseDecreaseInPrepaidExpense
Pledged Status [Axis]
Selling, general and administrative
LIABILITIES AND EQUITY
Lessee, Lease, Description [Table]
Change in assets and liabilities, net of effect of acquisition:
Changes in assets and liabilities
Reclassification [Table]
Restricted cash—long-term
us-gaap_RestrictedCashNoncurrent
Restricted cash—long-term
Restricted cash—short-term
Restricted cash—short-term
Restricted Cash, Current
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase in cash, cash equivalents and restricted cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Total cash, cash equivalents, and restricted cash
Cash, cash equivalents and restricted cash (excluding discontinued operations) at beginning of year
Cash and cash equivalents and restricted cash (excluding discontinued operations) at end of year
Due to IDT Corporation
us-gaap_IncreaseDecreaseInDueToRelatedParties
Effect of exchange rate changes on cash, cash equivalents and restricted cash
Amount IDT charged the Company
us-gaap_OtherExpenses
us-gaap_CommonStockDividendsPerShareCashPaid
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations
Less: Cash of discontinued operations at end of year
Cash, cash equivalents and restricted cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, cash equivalents and restricted cash (including discontinued operations) at end of year
us-gaap_NoncontrollingInterestDecreaseFromDeconsolidation
Deconsolidation of a subsidiary
Dilution of noncontrolling interest in a subsidiary
Operating cash flows from operating activities
us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Line of Credit Facility, Commitment Fee Amount
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
Connecticut Department of Revenue [Member]
Connecticut Department of Revenue
Sales Channel, Directly to Consumer [Member]
Pennsylvania Department of Revenue [Member]
Pennsylvania Department of Revenue
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Operating leases
us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Acquisition of noncontrolling interest of subsidiaries
us-gaap_MinorityInterestDecreaseFromRedemptions
Purchase of equity of subsidiary
Line of Credit Facility, Lender [Domain]
Derivative contracts, liabilities
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Non-vested restricted shares (in shares)
Non-vested restricted shares (in shares)
Lender Name [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Non-vested restricted shares, grant date fair value (in dollars per share)
Non-vested restricted shares, grant date fair value (in dollars per share)
Granted (in shares)
POR Program [Member]
POR Program
Granted, grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited (in shares)
Amount the Company charged IDT
us-gaap_OtherIncome
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Vested, grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total future lease payments
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Operating Lease, Weighted Average Discount Rate, Percent
2026
2030
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
Proceeds from term loan, net
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
Schedule of Maturities of Long-Term Debt [Table Text Block]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares)
2028
Measurement Frequency [Axis]
Commitments and Contingencies Disclosure [Text Block]
2027
2029
Fair Value Hierarchy and NAV [Axis]
Common stock, issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common stock, outstanding (in shares)
Award Type [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Common stock, authorized (in shares)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Common Class B [Member]
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Common stock
Other noncurrent assets
us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets
Guarantee Obligations [Member]
Schedule of Inventory, Current [Table Text Block]
Schedule of Cash and Cash Equivalents [Table Text Block]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Legal Matters and Contingencies [Text Block]
us-gaap_ComprehensiveIncomeNetOfTax
COMPREHENSIVE INCOME ATTRIBUTABLE TO GENIE ENERGY LTD.
us-gaap_ShortTermInvestments
Equity investments included in other current assets
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
Less imputed interest
Noncurrent portion of operating lease liabilities
Total operating lease liabilities
Total
Current portion of operating lease liabilities
Unconditional Purchase Obligation, Category of Goods or Services Acquired [Domain]
2031
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
Accounts Receivable [Member]
Less: Current portion
Current debt, net
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Concentration Risk Type [Domain]
2027
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Noncurrent portion of term loan
Noncurrent debt, net
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2028
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2026
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2030
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Income Tax Jurisdiction, Domestic State and Local [Member]
us-gaap_LongTermInvestments
Equity investments included in other noncurrent assets
us-gaap_LongTermDebt
Long-Term Debt
Total term loan
Offsetting Assets [Table]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Statement of Stockholders' Equity [Abstract]
Error Correction [Text Block]
Loss Contingency Nature [Axis]
Statement of Comprehensive Income [Abstract]
Investments in equity securities—noncurrent
us-gaap_EquitySecuritiesFVNINoncurrent
Investments in equity securities—current
us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Statement of Cash Flows [Abstract]
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
us-gaap_LossContingencyEstimateOfPossibleLoss
Loss Contingency, Estimate of Possible Loss
Equity Components [Axis]
Share-Based Payment Arrangement [Policy Text Block]
Equity Component [Domain]
Equity [Text Block]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Loss Contingency, Nature [Domain]
Asset Acquisition [Domain]
Deferred tax liabilities
us-gaap_DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities
Asset Acquisition [Axis]
Inventory valuation allowance
us-gaap_AssetAcquisitionConsiderationTransferred
Asset Acquisition, Consideration Transferred
us-gaap_AssetAcquisitionConsiderationTransferredTransactionCost
Asset Acquisition, Consideration Transferred, Transaction Cost
Subsequent Event Type [Domain]
Subsequent Event [Table]
Subsequent Event Type [Axis]
Quarterly Financial Information [Table Text Block]
Machinery and Equipment [Member]
Cost of revenues
Cost of revenues
Cost of Revenue
Intangible Asset and Goodwill [Text Block]
Additions during the period, net of revenue recognized during the period
Summary of Valuation Allowance [Table Text Block]
Sales Channel, Through Intermediary [Member]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Liabilities, Current [Abstract]
us-gaap_CurrentIncomeTaxExpenseBenefit
Current Income Tax Expense (Benefit)
Current liabilities
us-gaap_LiabilitiesCurrent
TOTAL CURRENT LIABILITIES
Total current liabilities
Derivatives Not Designated as Hedging Instruments [Table Text Block]
Federal
us-gaap_CurrentFederalTaxExpenseBenefit
Series 2012-A Preferred Stock [Member]
Represents Series 2012-A Preferred Stock.
Preferred stock, designated (in shares)
Number of shares designated.
us-gaap_LettersOfCreditOutstandingAmount
Letters of Credit Outstanding, Amount
us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
Loss from operations
Receivable from issuance of equity
Represents from noncontrolling from the issuance of equity interests to noncontrolling interest holders.
State and local
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Customer Concentration Risk [Member]
Marketable equity securities
us-gaap_MarketableSecuritiesCurrent
Renewable Energy Program [Member]
Sales Channel, Other [Member]
Other sales channel for delivery of good or service in contract with customer.
Other Basis of Pricing Contract [Member]
Basis of pricing for contract with customer.
Derivative Instruments and Hedging Activities Disclosures [Table]
Customer Relationships [Member]
Revenue Benchmark [Member]
Lumo Sweden [Member]
Information by name of disposal group.
Other Commitments [Table]
Stock Repurchase Program [Member]
Represents the stock repurchase program.
C&I Solar Projects [Member]
C&I Solar Projects
us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Debt Disclosure [Text Block]
Noncontrolling interests from CCE
us-gaap_MinorityInterest
Total noncontrolling interests
Investment property—current
gne_RealEstateInvestmentPropertyNetCurrent
Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.
Use of Estimates, Policy [Policy Text Block]
Investment property—noncurrent
gne_RealEstateInvestmentPropertyNetNoncurrent
Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.
Other Assets Disclosure [Text Block]
us-gaap_StockIssuedDuringPeriodValueNewIssues
Stock Issued During Period, Value, New Issues
Lessee, Operating Leases [Text Block]
Stock-based compensation
us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Subsidiary, Ownership Percentage, Noncontrolling Owner
us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Line of Credit Facility, Commitment Fee Percentage
UNITED STATES
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
us-gaap_DebtInstrumentCarryingAmount
Long-Term Debt, Gross
Other State Departments of Revenue [Member]
Other State Departments of Revenue
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
us-gaap_DebtWeightedAverageInterestRate
Debt, Weighted Average Interest Rate
Exercise of stock options
Schedule of Cash Taxes Paid [Table Text Block]
Tabular disclosure of cash taxes paid.
Total current assets
us-gaap_AssetsCurrent
TOTAL CURRENT ASSETS
Total current assets
Restricted Class B common stock issued to a member of the Board of Directors
Stock-based compensation (in shares)
Fair Value, Recurring and Nonrecurring [Table]
O 2026 Q1 Dividends [Member]
O 2026 Q1 Dividends
us-gaap_DebtInstrumentFeeAmount
Debt Instrument, Fee Amount
us-gaap_StockIssuedDuringPeriodSharesNewIssues
Stock Issued During Period, Shares, New Issues (in shares)
Debt Instrument, Name [Domain]
Exercise of stock options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Restricted Class B common stock issued to a member of the Board of Directors (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
Related and Nonrelated Parties [Axis]
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
Schedule of Long-Term Debt Instruments [Table]
Derivative Liability, Statement of Financial Position, Extensible Enumeration, Not Disclosed [Flag]
Debt Instrument [Axis]
us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Net cash provided by operating activities of continuing operations
us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
Stock Issued During Period, Value, Treasury Stock Reissued
OPERATING ACTIVITIES
INVESTING ACTIVITIES
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
FINANCING ACTIVITIES
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash (used in) provided by investing activities
us-gaap_TreasuryStockAcquiredAverageCostPerShare
Shares Acquired, Average Cost Per Share (in dollars per share)
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities of continuing operations
Noncontrolling investment to a subsidiary by Howard Jonas
Amount of increase in noncontrolling interest from subsidiary issuance of equity interests to noncontrolling interest holders.
Payment of term loan
Commitments and Contingencies, Policy [Policy Text Block]
Accounting Policies [Abstract]
Segments [Axis]
us-gaap_StockRepurchasedDuringPeriodValue
Stock Repurchased During Period, Value
us-gaap_StockRepurchasedDuringPeriodShares
Stock Repurchased During Period, Shares (in shares)
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign
Measurement Input Type [Axis]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
us-gaap_UnrecognizedTaxBenefits
Balance
Balance
Measurement Input, Cost to Sell [Member]
us-gaap_DeferredIncomeTaxExpenseBenefit
Deferred Income Tax Expense (Benefit)
us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Remaining Authorized, Number of Shares (in shares)
us-gaap_StockRedeemedOrCalledDuringPeriodValue
Stock Redeemed or Called During Period, Value
Redemption of preferred stock
Additions based on tax positions related to the current period
Additions based on tax positions related to prior periods
us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Lapses of statutes of limitations
Net income (loss) attributable to Genie Energy Ltd.
Net income attributable to Genie Energy Ltd.
NET INCOME ATTRIBUTABLE TO GENIE ENERGY LTD.
us-gaap_UnrecordedUnconditionalPurchaseObligationPurchases
Unrecorded Unconditional Purchase Obligation, Purchases
Net income attributable to Genie Energy Ltd. common stockholders
NET INCOME ATTRIBUTABLE TO GENIE ENERGY LTD. COMMON STOCKHOLDERS
Measurement Input Type [Domain]
Unused lines of Credit [Member]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State and local
us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeIncludingSubsequentAcquisitionPercentage
Business Combination, Achieved in Stages, Preacquisition and Acquired Equity Interests in Acquiree, Percentage
Net operating loss
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsLiabilitiesNet
DEFERRED INCOME TAX ASSETS, NET
us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Unrecorded Unconditional Purchase Obligation
us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
Selling, general and administrative expenses
Inventory [Domain]
Inventory [Axis]
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Repurchase of Class B common stock
Genie Retail Energy (“GRE”) [Member]
Relates to Genie Retail Energy (“GRE”).
Public Utilities, Inventory, Natural Gas [Member]
CityCom Solar [Member]
Represents CityCom Solar.
Accrued expenses
Diversegy [Member]
Represents Diversegy.
us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1
Finite-Lived Intangible Assets, Remaining Amortization Period (Year)
Bad debt reserve
Genie Solar [Member]
Represents Genie Solar.
Stock options and restricted stock
us-gaap_StockRedeemedOrCalledDuringPeriodShares
Stock Redeemed or Called During Period, Shares (in shares)
Redemption of preferred stock (in shares)
Accounts payable and other current liabilities
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesCurrent
us-gaap_OpenTaxYear
Open Tax Year
Valuation allowances and reserves, deductions
us-gaap_ValuationAllowancesAndReservesDeductions
us-gaap_ValuationAllowancesAndReservesBalance
Valuation allowances and reserves, balance
Valuation allowances and reserves, balance
Valuation allowances and reserves, additions
us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Schedule of Variable Interest Entities [Table Text Block]
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Allowance for credit losses, additions (deductions)
Customer A [Member]
Information pertaining to customer A.
us-gaap_VariableInterestEntityOwnershipPercentage
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage
Marketing and customer acquisition expenses
us-gaap_MarketingAndAdvertisingExpense
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
ROU assets
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Table]
Liabilities, Noncurrent [Abstract]
us-gaap_TangibleAssetImpairmentCharges
Tangible Asset Impairment Charges
Document Type
Document Information [Line Items]
Document Annual Report
Genie Renewables (GREW) [Member]
Represents Genie Renewables.
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Operating Lease, Weighted Average Remaining Lease Term (Year)
Document Information [Table]
Document Financial Statement Restatement Recovery Analysis [Flag]
Nonvested Restricted Stock Shares Activity [Table Text Block]
Entity Interactive Data Current
Document Transition Report
Diluted (in shares)
Diluted weighted-average number of shares (in shares)
Document Financial Statement Error Correction [Flag]
Patents and Trademarks [Member]
Relates to patents and trademarks.
Basic weighted-average number of shares (in shares)
Basic (in shares)
us-gaap_UnrealizedGainLossOnInvestments
Unrealized (gain) loss on marketable equity securities and investments and others
Derivative Instrument [Axis]
Stock-based compensation
us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount
Other Current Liabilities [Table Text Block]
gne_LiabilitiesAndNoncontrollingInterests
TOTAL LIABILITIES AND NONCONTROLLING INTERESTS
Amount of liabilities and noncontrolling interests.
Security deposits
us-gaap_DepositsAssetsNoncurrent
Equity Securities without Readily Determinable Fair Value [Table Text Block]
Thereafter
Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
gne_LiabilityForClaimsAndClaimsAdjustmentExpenseCurrentAndNoncurrent
Liability for Claims and Claims Adjustment Expense, Current and Noncurrent
The current and noncurrent amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Income Tax Jurisdiction [Axis]
Term Loan [Member]
Information relating to the type of debt instrument.
Class B Common Stock From Vested Restricted Stock [Member]
Represents the class B common shares from the vested restricted stock.
Class B Common Stock from Exercise of Stock Options [Member]
Represents the class B common stock from the exercise of stock options.
ICFR Auditor Attestation Flag
Revision of Prior Period, Adjustment [Member]
Document Fiscal Period Focus
Pledging Purpose [Axis]
Customer [Domain]
Document Fiscal Year Focus
Pledging Purpose [Domain]
Investment, Name [Domain]
Depreciation and amortization
us-gaap_DepreciationAndAmortization
JPMorgan Chase Bank [Member]
Identification of the lender, which may be a single entity (for example, a bank, pension fund, venture capital firm) or a group of entities that participate in the line of credit, including a letter of credit facility.
Amendment Flag
Equity Securities without Readily Determinable Fair Value [Table]
Common Stock [Member]
Document Period End Date
Property, Plant, and Equipment [Text Block]
Thereafter
gne_PurchaseObligationToBePaidAfterYearThree
Amount of purchase arrangement to be paid after third fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
National Cooperative Bank ("NCB") [Member]
Represents National Cooperative Bank, N.A. ("NCB").
Construction in Progress [Member]
us-gaap_ImpairmentOfIntangibleAssetFiniteLivedStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]
Entity File Number
Entity Tax Identification Number
Entity [Domain]
gne_PolicyTable
Entity Central Index Key
Penalty and interest
gne_EffectiveIncomeTaxRateReconciliationPenaltyAndInterestAmount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to penalty and interest.
Entity Registrant Name
us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Balance, beginning of period
Balance, end of period
Penalty and interest, percent
gne_EffectiveIncomeTaxRateReconciliationPenaltyAndInterestPercent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to penalty and interest.
Entity Well-known Seasoned Issuer
Software, Internally Developed [Member]
Entity Current Reporting Status
Entity Voluntary Filers
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Entity Public Float
Entity Filer Category
Entity Shell Company
Dividends on preferred stock declared (in dollars per share)
Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share)
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Liabilities
Entity Emerging Growth Company
gne_StockIssuedDuringPeriodValueIssuedForExerciseOfOptionsIncludingTreasuryAmount
Exercise of stock options
The value of the stock options exercised during the period including the value for treasury stock.
Entity Small Business
Income (loss) from operations
Income from operations
Income from operations
Fair value of derivative contracts—noncurrent
us-gaap_DerivativeAssetsNoncurrent
Energy contracts and options
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Derivative contracts, assets
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Property, plant and equipment (1 to 10-year useful life)
us-gaap_PreferredStockDividendsIncomeStatementImpact
Dividends on preferred stock
Fair value of derivative contracts—current
us-gaap_DerivativeAssetsCurrent
Energy contracts and options (1)
Income taxes payable
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxesPayable
Option Indexed to Issuer's Equity, Liability [Table]
Energy contracts and options
Total derivatives not designated or not qualifying as a hedging instruments — Liabilities
Total derivatives not designated or not qualifying as a hedging instruments — Assets
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Cash
us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents
REVENUES:
Receivables from the settlement of the derivative contract and others—current
us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
us-gaap_DerivativeLiabilitiesNoncurrent
Energy Contracts and options
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Entity Address, State or Province
Entity Address, City or Town
us-gaap_DerivativeLiabilitiesCurrent
Energy contracts and options (1)
Entity Address, Address Line One
City Area Code
Local Phone Number
Entity Address, Postal Zip Code
Derivative [Table]
us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Noncontrolling interest
Preferred Stock [Member]
Title of 12(b) Security
Disposal Groups, Including Discontinued Operations, Cash Flow Information [Table Text Block]
Tabular disclosure of information related to a disposal group.
Security Exchange Name
Loss from Alleged Violations [Member]
An existing condition, situation, or set of circumstances involving uncertainty as to possible loss to an enterprise that will ultimately be resolved when one or more future events occur or fail to occur. Resolution of the uncertainty may confirm the incurrence of a loss or impairment of an asset or the incurrence of a liability.
Trading Symbol
Violations of Illinois Consumer Fraud and Deceptive Business Practices Act [Member]
Judicial proceeding, alternative dispute resolution or claim. For example, but not limited to, name of case, category of litigation, or other differentiating information.
Derivatives, Policy [Policy Text Block]
Roded for New Israel Shekel (NIS) [Member]
Series of individually immaterial business combinations.
us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value
Variable Rate [Domain]
Related Party Transaction [Domain]
Renewable Energy Credits [Member]
Represents Renewable Energy Credits.
Residents Energy [Member]
Relates to Residents Energy.
Entity Common Stock, Shares Outstanding
Related Party Transaction [Axis]
BP Energy Company, Preferred Supplier Agreement [Member]
Specific identification or general nature of (for example, a construction contractor, a consulting firm) the party from whom the goods or services were or are to be received.
Schedule of Related Party Transactions, Balance Sheet Items [Table Text Block]
Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.
Other current assets
Total current assets
Others
us-gaap_OtherSundryLiabilitiesCurrent
IDT Corporation [Member]
Relates to the related parties.
Current captive insurance liability
gne_LiabilityForClaimsAndClaimsAdjustmentExpenseCurrent
Current captive insurance liability
The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Noncurrent captive insurance liability
gne_LiabilityForClaimsAndClaimsAdjustmentExpenseNoncurrent
Noncurrent captive insurance liability
The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Insurance [Member]
Transaction between related party.
IGM Brokerage Corp [Member]
Information pertaining to the related parties.
Guarantor Obligations, Nature [Domain]
us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net loss (income) attributable to noncontrolling interests, net
Rafael Holdings, Inc [Member]
Pertains to the related parties.
Profit (loss)
Net income (loss)
Net income (loss)
Net income for the year ended December 31, 2023 (As Restated)
Genie Foundation [Member]
Pertains to the related parties.
Howard Jonas [Member]
Pertains to the related parties.
us-gaap_GuaranteeObligationsCurrentCarryingValue
Guarantor Obligations, Current Carrying Value
Effect of Fourth Quarter Events [Table]
Scenario [Axis]
Guarantor Obligations, Nature [Axis]
Scenario [Domain]
Forecast [Member]
Measurement Input, Quoted Price [Member]
Income taxes payable
Income taxes payable
Income taxes payable
Weighted-average number of shares used in the calculation of earnings per share
Investment, Name [Axis]
Previously Reported [Member]
Receivable [Domain]
Current hedge liabilities
Total assets
us-gaap_Assets
TOTAL ASSETS
Total assets
Auditor Firm ID
Auditor Name
Geographical [Domain]
Auditor Location
Geographical [Axis]
us-gaap_AllowanceForDoubtfulAccountsReceivable
Allowance for credit losses, balance
Allowance for credit losses, balance
Net income from continuing operations
Net income from continuing operations
NET INCOME FROM CONTINUING OPERATIONS
Earnings per share, diluted (in dollars per share)
Diluted earnings per share attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Net income attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Other selling, general and administrative expenses
us-gaap_OtherSellingGeneralAndAdministrativeExpense
Customer [Axis]
Depreciation and amortization
Electricity [Member]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Consolidation, Policy [Policy Text Block]
Volume (Megawatt-Hour)
Disposal Group Name [Domain]
Receivable Type [Axis]
Interest income
us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
Comprehensive income (loss) attributable to noncontrolling interests
Oil and Gas [Member]
Intangible Asset, Finite-Lived [Table Text Block]
Other comprehensive (loss) income:
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
COMPREHENSIVE INCOME
Intangible Asset, Finite-Lived [Table]
Total equity
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
TOTAL EQUITY
Total equity
BALANCE
BALANCE
Disposal Groups, Including Discontinued Operations [Table]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares)
EQUITY:
Disposal Group Name [Axis]
Forfeited, grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Award Timing MNPI Disclosure [Text Block]
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
us-gaap_PaymentsOfDividends
Dividends paid
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Other Liabilities, Current
Total other current liabilities
Other Liabilities, Noncurrent
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Commitments and contingencies (Note 16 and Note 17)
Statistical Measurement [Axis]
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Trading Arrangements, by Individual [Table]
Material Terms of Trading Arrangement [Text Block]
Alternative investments
us-gaap_RestrictedInvestmentsNoncurrent
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Financial Instrument [Axis]
Minimum [Member]
Product and Service, Other [Member]
Insider Trading Policies and Procedures [Line Items]
Statistical Measurement [Domain]
Maximum [Member]
Foreign
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Litigation Case [Domain]
Domestic
Valuation allowance, percent
us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Counterparty Name [Axis]
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Balance at end of period, percent
U.S. federal income tax benefit at statutory rate, percent
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Foreign tax effect, percent
us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Income Tax Jurisdiction [Domain]
us-gaap_DividendsCommonStockCash
Dividends, Common Stock, Cash
Dividends on common stock
Financial Instruments [Domain]
us-gaap_DividendsPreferredStockCash
Dividends, Preferred Stock, Cash
Dividends on preferred stock
Dividends on common stock declared (in dollars per share)
Unrecognized tax benefits, percent
us-gaap_EffectiveIncomeTaxRateReconciliationTaxContingencies
Asset Pledged as Collateral [Member]
Litigation Case [Axis]
State and local income tax, net of federal benefit, percent
us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Counterparty Name [Domain]
Stock-based compensation, percent
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
Others, percent
us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Gain recognized during the period, net
Dividends [Axis]
Dividends [Domain]
Award Type [Axis]
Adjustments to reconcile net income to net cash provided by operating activities:
Plan Name [Axis]
Plan Name [Domain]
Electric Generation Equipment [Member]
Stock-based compensation
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Consolidation Items [Axis]
us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
Non-cash items
us-gaap_ShareBasedCompensation
Stock-based compensation
Subsequent Event [Member]
Consolidation Items [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
Share-Based Payment Arrangement [Text Block]
Preferred stock, issued (in shares)
Preferred stock, outstanding (in shares)
Preferred Stock, Shares Outstanding (in shares)
Weighted average amortization period (Year)
us-gaap_PreferredStockLiquidationPreferenceValue
Preferred Stock, Liquidation Preference, Value
Preferred stock, authorized (in shares)
Variable Interest Entity Disclosure [Text Block]
Unrealized gain
Preferred stock, par value (in dollars per share)
Energy Related Derivative [Member]
State taxes
As Restated 1 [Member]
Represents as restated.
Restated 1 [Member]
Represents restated.
Class B Common Stock Repurchases [Member]
Represents repurchases of Class B common stock.
Class B Common Stock Repurchases from Genie Foundation [Member]
Represents repurchases of Class B common stock repurchases from Genie Foundation.
us-gaap_NumberOfReportingUnits
Number of Reporting Units
New Accounting Pronouncements, Policy [Policy Text Block]
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Statement [Table]
Credit Facility [Axis]
Credit Facility [Domain]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Prepaid expenses
Equity method investments
Marketable equity securities
New York State Division of Taxation and Finance [Member]
us-gaap_EquityMethodInvestmentOwnershipPercentage
Equity Method Investment, Ownership Percentage
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Surety Bond [Member]
Product and Service [Domain]
Product and Service [Axis]
Ownership [Axis]
Ownership [Domain]
Property, plant and equipment useful life (Year)
Property, Plant and Equipment, Useful Life (Year)
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Deposits [Member]
Revision of Prior Period [Domain]
Revision of Prior Period [Axis]
Due to IDT
us-gaap_AccountsPayableCurrentAndNoncurrent
Accounts Payable
Assets [Abstract]
Statement [Line Items]
us-gaap_AccountsPayableTradeCurrentAndNoncurrent
Accounts Payable, Trade
Grantee Status [Domain]
Share-Based Payment Arrangement, Employee [Member]
Grantee Status [Axis]
Noncurrent assets of discontinued operations
Noncurrent assets of discontinued operations
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Asset, Expected Amortization, Year Two
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Asset, Expected Amortization, Year Three
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Asset, Expected Amortization, Year One
Trade accounts payable
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Asset, Expected Amortization, Year Four
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Finite-Lived Intangible Asset, Expected Amortization, Year Five
Disposal Group Classification [Axis]
Disposal Group Classification [Domain]
Proceeds from sale of marketable equity securities and other investments
Accrued expenses
us-gaap_AccruedLiabilitiesCurrent
Total accrued expenses
Disposal Group, Disposed of Other than by Sale, Not Discontinued Operation [Member]
Charitable contribution of treasury stock
The amount of treasury stock reissued for charitable contribution.
Payroll and employee benefits
Licenses [Member]
Represents licenses.
gne_DistributionAndHandlingCosts
Distribution and Handling Costs
The amount of distribution and handling costs incurred that are directly related to selling, general and administrative expenses during the reporting period.
Schedule of Related Party Transactions [Table Text Block]
Other accrued expenses
gne_ShippingAndHandlingFreightCharges
Shipping and Handling Freight Charges
The amount of shipping, handling and freight charges incurred that are directly related to goods produced and sold and services rendered during the reporting period.
Charitable donation of Class B common stock
gne_TreasuryStockReissuedForCharitableContribution
The amount of treasury stock reissued for charitable contribution.
Computer Software and Development [Member]
Represents computer software and development.
us-gaap_ProceedsFromSaleOfEquityMethodInvestments
Proceeds from Sale of Equity Method Investments
Office Equipment and Other [Member]
Represents office equipment and other.
Computers and Computer Hardware [Member]
Represents computers and computer hardware.
Assets held for sale
us-gaap_AssetsHeldForSaleNotPartOfDisposalGroupCurrent
Asset, Held-for-Sale, Not Part of Disposal Group, Current
Description of Business [Policy Text Block]
Description of Business Policy.
Solar Panels [Member]
Represents solar panels.
Roded Recycling Industries Ltd. [Member]
Represents Roded Recycling Industries Ltd.
Capitalization, Equity [Table]
gne_DisposalGroupIncludingDiscontinuedOperationOtherIncomeExpense
Other (expense) income
The amount of other income (expense) attributable to disposal group, including, but not limited to, discontinued operation.
Lease liability
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from lease liability.
Income Tax Jurisdiction, Domestic Federal [Member]
Prism Solar Technology [Member]
Represents Prism Solar Technology.
gne_PercentOfLiquidation
Percent of Liquidation
The percent of liquidation.
Financial Standby Letter of Credit [Member]
Intangible Asset, Finite-Lived, Class [Axis]
Intangible Asset, Finite-Lived, Class [Domain]
Atid Drilling Ltd. [Member]
Represents Atid Drilling Ltd.
Total assets of continuing operations
Assets of continued operations
Total assets of continuing operations.
Product Concentration Risk [Member]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Net assets
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 1 [Member]
INDIANA
Income Tax Jurisdiction, Foreign [Member]
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Property and equipment, net
Property and equipment, net
us-gaap_PropertyPlantAndEquipmentGross
Property, Plant and Equipment, Gross
Provision for credit losses
Provision for credit losses
Allowance for credit losses, expense (reversal)
Supplier Finance Program [Domain]
Deferred income tax assets, net
Deferred income tax assets, net
Deferred income tax assets, net
Supplier Finance Program [Axis]
Warrants
gne_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseWarrantsAmount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to warrants.
Long-lived assets of continuing operations, net
gne_NoncurrentAssetsContinuingOperation
Noncurrent assets attributable to continuing operations.
Permanent difference
gne_EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferenceAmount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.
Warrants, percent
gne_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseWarrantsPercent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to warrants.
Permanent difference, percent
gne_EffectiveIncomeTaxRateReconciliationNondeductibleExpensePermanentDifferencePercent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.
Fair Value Disclosures [Text Block]
Trade accounts receivable
us-gaap_AccountsReceivableNet
Accounts Receivable, after Allowance for Credit Loss
Gain on investments and others, net
Gain (Loss) on Investments
us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Impairment of Intangible Assets, Finite-Lived
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Quarterly Financial Information [Text Block]
Secured Overnight Financing Rate (SOFR) [Member]
Trade accounts receivable, net of allowance for credit losses of $7,876 and $8,086 at December 31, 2025 and 2024, respectively
us-gaap_PreferredStockLiquidationPreference
Preferred Stock, Liquidation Preference Per Share (in dollars per share)
O 2023 Q2 Additional Dividends [Member]
Additional dividends paid in the month ended May 2023.
O 2023 A Base Dividends [Member]
Base dividends awarded for the year ended 2023.
us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Net cash used in investing activities of continuing operations
Due to IDT Energy
us-gaap_AccountsPayableAndAccruedLiabilitiesNoncurrent
Measurement Input, Net Asset Value [Member]
Measurement input using net asset value.
Net cash provided by operating activities of discontinued operations
Cash flows from operating activities of discontinued operation
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation
Net cash provided by investing activities of discontinued operations
Accumulated other comprehensive income
us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Payments to Acquire Interest in Subsidiaries and Affiliates
Purchase of equity of subsidiary
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Accumulated amortization
Income before income taxes
Income before income taxes
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Recovery of Payments [Member]
Relates to the recovery of payments.
Claim Against Derivative Instrument Gain [Member]
Relates to the claim against a gain from sale of derivative instruments.
us-gaap_PaymentsToAcquireMarketableSecurities
Purchase of marketable equity securities and other investments
Additional paid-in capital
Solar System Facilities [Member]
Represents solar system facilities.
Discontinued Operations, Disposed of by Sale [Member]
Acquisition of Solar System Facilities [Member]
Relates to the acquisition of solar system facilities.
Prepaid expenses and other current assets
us-gaap_PrepaidExpenseAndOtherAssetsCurrent
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Cash and other current liabilities
Amount of assets net of current liabilities.
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Payments to Acquire Property, Plant, and Equipment
Capital expenditures
Goodwill and Intangible Assets, Policy [Policy Text Block]
Genie Energy International Corporation ("GEIC") [Member]
Name of entity in which ownership interest is disclosed. Excludes equity method investee and named security investment.
Non-US [Member]
Deferred Stock Units [Member]
Relates to deferred stock units.
Cash Flow, Operating Activities, Lessee [Table Text Block]
Tabular disclosure of cash flow activities.
The 2021 Plan [Member]
Plan name for share-based payment arrangement.
Lessee, Operating Lease [Table Text Block]
Tabular disclosure for lessee's operating leases.
Gross profit
us-gaap_GrossProfit
GROSS PROFIT
Schedule of Variable Interest Entities, Additional Information [Table Text Block]
Tabular disclosure of information pertaining to variable interests.
Aggregate funding paid to (provided by) the Company, net
Represents the amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE), as well as distributions received.
Goodwill [Table]
Credit Loss, Financial Instrument [Policy Text Block]
Note to Acquire Investment Property [Member]
Information pertaining to the debt.
Noncontrolling Interest, Receivables from Issuance of Equity [Member]
Category of equity that is due.
Noncontrolling Interest Before Receivable For Issuance Of Capital Stock [Member]
This element represents that portion of equity (net assets) in a subsidiary not attributable, directly or indirectly, to the parent. A noncontrolling interest is sometimes called a minority interest.
Noncontrolling interest
Represents noncontrolling interest before the receivable.
us-gaap_GainLossOnSaleOfDerivatives
Gain (Loss) on Sale of Derivatives
us-gaap_Depreciation
Depreciation
Investment Property [Member]
Relates to investment ownership.
Class of Stock [Domain]
gne_PaymentToImproveInvestmentProperty
Purchase and improvement of investment property, net of noncontrolling interest portion paid by Howard Jonas
Amount of cash outflow for the purchase of or improvements of investment property.
Exercise of Class B common stock warrants (in shares)
The shares related to warrants exercised during the period.
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Exercise of Class B common stock warrants
The value of the warrants exercised during the period.
gne_GainFromTaxCreditReceived
Gain from Tax Credit Received
The gain from tax credit received.
Genie Energy Charitable Foundation [Member]
Represents the Genie Energy Charitable Foundation.
gne_NetIncomeLossAvailableToCommonStockholders
Net income attributable to Genie Energy Ltd. common stockholders
The net income (loss) available to common stockholders.
us-gaap_RealEstateInvestmentPropertyAtCost
Real Estate Investment Property, at Cost
Advertising Cost [Policy Text Block]
gne_DeferredTaxAssetsLiabilitiesGross
Total deferred income tax assets
The gross amount of deferred tax assets and liabilities.
gne_DeferredTaxLiabilitiesAmortization
Amortization
The amortization on the deferred tax items.
gne_PreferredStockDividendRateVariableBasisSpread
Preferred Stock Dividend Rate, Variable Basis Spread
The variable basis spread of the preferred stock dividend rate.
gne_PreferredStockDividendRateBaseDividend
Preferred Stock Dividend Rate, Base Dividend (in dollars per share)
The base dividend per share.
Shipping and Handling, Fees and Costs [Policy Text Block]
The shipping and handling, fees and costs, policy.
Property, Plant and Equipment, Useful Life [Table Text Block]
The useful lives of PP&E.
us-gaap_AdvertisingExpense
Advertising Expense
gne_AssetAcquisitionRevenueOfAcquireeSinceAcquisitionDateActual
Asset Acquisition, Revenue of Acquiree Since Acquisition Date, Actual
The revenue of the acquiree since acquisition.
gne_SharebasedCompensationArrangementBySharebasedPaymentAwardNonoptionEquityInstrumentsGrantDateFairValueAmortizedPeriod
Share-based Compensation Arrangement by Share-based Payment Award, Non-option Equity Instruments, Grant Date, Fair Value Amortized Period (Year)
The grant date's fair value amortization period.
Unrecorded Unconditional Purchase Obligation by Category of Item Purchased [Axis]
Operating Segments [Member]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
gne_PreferredStockAdditionalDividends
Preferred Stock, Additional Dividends (in shares)
Additional dividends of preferred stock.
gne_DividendEbitdaBenchmark
Dividend, EBITDA Benchmark
The EBITDA benchmark for the dividend.
Segments [Domain]
gne_OwnershipPercentagePurchased
Ownership, Percentage Purchased
The percentage of ownership purchased.
allowance for doubtful accounts
Long-Term Purchase Commitment [Table]
Accounts Receivable [Policy Text Block]
Long-Term Purchase Commitment [Table Text Block]
Income from continuing operations (in dollars per share)
Diluted earnings per share from continuing operations attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Income from continuing operations (in dollars per share)
Basic earnings per share from continuing operations attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Employees [Member]
Pertains to the counterparty.
Distribution
Relates to payments or distribution of equity securities
Income Statement [Abstract]
Purchases
Amount of cash outflow to acquire investment in equity security measured at fair value.
Other Capital Expenditures [Member]
Relates to capital expenditures.
2026
us-gaap_PurchaseObligationDueInNextTwelveMonths
us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Net (loss) income before taxes
(Loss) income from discontinued operations (in dollars per share)
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
(Loss) income from discontinued operations (in dollars per share)
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare
Other assets
us-gaap_OtherAssetsMiscellaneousNoncurrent
Other assets
us-gaap_OtherAssetsMiscellaneous
Net income (loss) from discontinued operations, net of tax
(Loss) income from discontinued operations, net of tax
Loss (income) from discontinued operations, net of taxes
Net (loss) income
Other assets
us-gaap_OtherAssetsMiscellaneousCurrent
us-gaap_PurchaseObligation
Total payments
us-gaap_TreasuryStockCommonValue
Treasury stock, at cost, consisting of 4,492 and 3,828 shares of Class B common at December 31, 2025 and 2024, respectively
Treasury stock, shares (in shares)
Treasury Stock, Common, Shares (in shares)
Treasury Stock, Common [Member]
2027
us-gaap_PurchaseObligationDueInSecondYear
2028
us-gaap_PurchaseObligationDueInThirdYear
us-gaap_AmortizationOfIntangibleAssets
Amortization of Intangible Assets
us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Provision for income taxes
Common Class A [Member]
Cumulative translation adjustment
Renewable energy
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
Income Tax Disclosure [Text Block]
Restricted Stock [Member]
Income Tax, Policy [Policy Text Block]
Foreign tax effect
us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
U.S. federal income tax benefit at statutory rate
us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Impairment of assets
Asset, Impairment Loss
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Related and Nonrelated Parties [Domain]
Related Party Transaction [Table]
Related Party Transactions Disclosure [Text Block]
State and local income tax, net of federal benefit
us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Unrecognized tax benefits
us-gaap_IncomeTaxReconciliationTaxContingencies
Stock-based compensation
us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
Others
us-gaap_IncomeTaxReconciliationOtherAdjustments
Fair Value Hierarchy and NAV [Domain]
Measurement Frequency [Domain]
Assets of discontinued operations
Statement of Financial Position [Abstract]
Other current assets of discontinued operations
Current assets of discontinued operations
Provision for captive insurance liability
Cash payments made for income taxes
us-gaap_IncomeTaxesPaidNet
Income Taxes, net of amounts refunded
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Fair Value, Recurring [Member]
Other assets
Other Assets, Noncurrent
TOTAL ASSETS
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchases of Class B common stock
Other current assets and other assets
us-gaap_IncreaseDecreaseInOtherOperatingAssets
OPERATING EXPENSES AND LOSSES:
Customer A
Concentration Risk, Percentage
us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock
Redemption of preferred stock
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
Shares underlying stock options and warrants (in shares)
Diluted
Basic
Earnings per share attributed to Genie Energy Ltd. common stockholders
Intangible Asset, Indefinite-Lived, Class [Domain]
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditEnergyRelatedPercent
Solar credits, percent
us-gaap_LossContingencyDamagesSoughtValue
Loss Contingency, Damages Sought, Value
Non-vested restricted Class B common stock (in shares)
Earnings per share, basic (in dollars per share)
Basic earnings per share attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Net income attributable to Genie Energy Ltd. common stockholders (in dollars per share)
Effect of cross border tax laws
us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectAmount
Effect of cross border tax laws, percent
us-gaap_EffectiveIncomeTaxRateReconciliationCrossBorderTaxEffectPercent
Intangible Asset, Indefinite-Lived, Class [Axis]
Effective Income Tax Rate Reconciliation [Table]
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
State and local
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditEnergyRelatedAmount
Solar credits
Earnings Per Share, Policy [Policy Text Block]
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
Federal
Other intangibles, net
Consolidation of Roded
Intangible assets, net
Intangible assets, gross
us-gaap_EscrowDepositDisbursementsRelatedToPropertyAcquisition1
Escrow Deposit Disbursements Related to Property Acquisition
us-gaap_DebtInstrumentCollateralAmount
Debt Instrument, Collateral Amount
Goodwill
Balance
Balance
Investment [Table Text Block]
Alternative investments
Business Combination [Domain]
Time-and-Materials Contract [Member]
Business Combination [Axis]
Disaggregation of Revenue [Table Text Block]
us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Business Combination, Voting Equity Interest Acquired, Percentage
Business Combination [Policy Text Block]
Foreign currency translation adjustments
Business Combination [Table]
Fair Value Measurement, Policy [Policy Text Block]
Contract with Customer, Sales Channel [Domain]
Contract with Customer, Basis of Pricing [Domain]
Contract with Customer, Sales Channel [Axis]
Fixed-Price Contract [Member]
Other comprehensive loss
Contract with Customer, Basis of Pricing [Axis]
Recognition of revenue included in the beginning of the year contract liability
us-gaap_LossContingencyLossInPeriod
Loss Contingency, Loss in Period
us-gaap_InterestExpenseNonoperating
Interest expense
Retained earnings
Retained earnings
Retained earnings
Retained earnings
Retained earnings
Consolidation of subsidiary
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Payment, Tax Withholding, Share-Based Payment Arrangement
Equity Method Investment [Table]
Class of Stock [Axis]
Due to IDT Corporation, net
Revenue [Policy Text Block]
Liability to customers related to promotional and retention incentives
us-gaap_DeferredIncomeTaxesAndTaxCredits
Deferred income taxes
Proceeds from exercise of warrants
Property, Plant, and Equipment [Table]
us-gaap_PropertyPlantAndEquipmentTransfersAndChanges
Property, Plant and Equipment, Transfers and Changes
Common stock, par value (in dollars per share)
Schedule of Other Assets, Noncurrent [Table Text Block]
Derivative Contract [Domain]
Income from continuing operations
Income from continuing operations attributable to Genie Energy Ltd. common stockholders
(Loss) income from discontinued operations
us-gaap_NetIncomeLossFromDiscontinuedOperationsAvailableToCommonShareholdersBasic
Long-Lived Asset, Class [Axis]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Cash and cash equivalents
Cash and cash equivalents
Investment [Text Block]
us-gaap_InvestmentOwnedBalanceShares
Investment Owned, Balance, Shares (in shares)
us-gaap_ContractWithCustomerLiability
Contract liability
Contract liability
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
Contract liabilities
us-gaap_AssetsNet
Net Assets
Cash payments made for interest
us-gaap_InterestPaidNet
Business Combination [Table Text Block]
Disposal Groups, Including Discontinued Operations [Table Text Block]
Inventory
Inventory
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
Financial Instrument Subject to Mandatory Redemption [Table]
Total Genie Energy Ltd. stockholders’ equity
us-gaap_StockholdersEquity
Total Genie Energy Ltd. stockholders’ equity
Total Genie Energy Ltd. stockholders’ equity
Goodwill [Table Text Block]
us-gaap_NumberOfRealEstateProperties
Number of Real Estate Properties
Nature of Operation, Product Information, Concentration of Risk [Table]
us-gaap_InventoryValuationReserves
Inventory Valuation Reserves
Right-of-use assets, net of amortization
ROU assets
Revenues
Revenues
Revenue from Contract with Customer, Excluding Assessed Tax
Property, Plant, and Equipment [Table Text Block]
us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Revenue
Inventory, Policy [Policy Text Block]
Valuation allowance
us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance