Document And Entity Information
Dividend yields
Note To Financial Statement Details Textual
Significant Accounting Policies
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
Note 2 - Summary of Significant Accounting Policies
Theoretical tax expense
Note 4 - Unproven Oil and Gas Properties, Full Cost Method
Risk-free interest rates
Note 5 - Accrued Liabilities
Note 6 - Stockholders' Equity
Note 7 - Income Taxes
Note 8 - Right of Use Leases Assets and Leases Obligations
Long-term liabilities
Note 9 - Commitments and Contingencies
Note 11 - Selected Quarterly Information (Unaudited)
Income Tax Disclosure [Text Block]
Note 2 - Summary of Significant Accounting Policies - Schedule of Property and Equipment Movement (Details)
Note 4 - Unproven Oil and Gas Properties, Full Cost Method (Details)
Note 4 - Unproven Oil and Gas Properties, Full Cost Method - Schedule of Impairment (Details)
Expected volatility
Note 4 - Unproven Oil and Gas Properties, Full Cost Method - Schedule of Changes to Oil and Gas Properties (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 5 - Accrued Liabilities - Schedule of Accrued Liabilities (Details)
Note 6 - Stockholders' Equity - Schedule of Warrants and Options Outstanding (Details)
Note 6 - Stockholders' Equity - Stock Option Roll Forward (Details)
Note 6 - Stockholders' Equity - Schedule of Outstanding and Exercisable Options (Details)
Note 6 - Stockholders' Equity - Option Valuation Assumptions (Details)
Expected life (in years) (Year)
Note 6 - Stockholders' Equity - Schedule of Share-based Compensation Costs (Details)
Asset retirement obligation
Note 6 - Stockholders' Equity - Schedule of Warrant Activity (Details)
Note 7 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)
Note 7 - Income Taxes - Income Tax Reconciliation (Details)
Note 8 - Right of Use Leases Assets and Leases Obligations - Schedule of Operating Lease Assets and Liabilities (Details)
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Note 8 - Right of Use Leases Assets and Leases Obligations - Schedule of Lease Information (Details)
Schedule of Stock Options Roll Forward [Table Text Block]
Note 8 - Right of Use Leases Assets and Leases Obligations - Schedule of Future Minimum Lease Payments (Details)
Governmental receivables
Note 9 - Commitments and Contingencies - Asset Retirement Obligations (Details)
Note 9 - Commitments and Contingencies - Schedule of Future Minimum Lease Payments (Details)
Note 11 - Selected Quarterly Information (Unaudited) - Schedule of Quarterly Financial Information (Details)
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Notes To Financial Statements
Share-Based Payment Arrangement, Activity [Table Text Block]
Notes To Financial Statements [Abstract]
Legal and seismic costs, license fees and other preparation costs
us-gaap_AcquisitionCosts
Legal and seismic costs, license fees and other preparation costs
Insurance financing (see note 9G)
Debt, Current
Guarantor Obligations, Nature [Axis]
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Guarantor Obligations, Nature [Domain]
Excercisable, weighted average exercise price (in dollars per share)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Excercisable (in shares)
Weighted-average grant date fair value (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
Exercise Price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Expired/Cancelled/Forfeited, weighted average exercise price (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
ZNWAA (in shares)
ZNWAA (in shares)
Granted to employees, officers, directors and others, weighted average exercise price (in dollars per share)
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)
Exercised, weighted average exercise price (in dollars per share)
Accrued liabilities
Accrued Liabilities, Current
Employees related
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
ZNWAA (in shares)
Lessee, Operating Leases [Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExpirations
ZNWAA (in shares)
Accounts payable
Proceeds from sale of property and equipment
Proceeds from Sale of Productive Assets
Number of Shares (in shares)
Outstanding (in shares)
Outstanding (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
ZNWAA (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Expired/Cancelled/Forfeited (in shares)
us-gaap_OtherAccruedLiabilitiesCurrent
Other
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Schedule of Asset Retirement Obligations [Table Text Block]
Audit and Legal Costs
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Acquisition of property and equipment
Warrant, expiration date
Non-cash investing and financing activities:
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Grantee Status [Domain]
Grantee Status [Axis]
us-gaap_PaymentsToAcquireOilAndGasPropertyAndEquipment
Payments to Acquire Oil and Gas Property and Equipment
Liabilities and Stockholders’ Equity
Current liabilities
Lease obligation - current and non current
us-gaap_Assets
Total assets
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Award Type [Domain]
Award Date [Axis]
Award Date [Domain]
Net loss
Net Income (Loss) Attributable to Parent
Net loss
Award Type [Axis]
Scrap Drilling Pipe and Accessories [Member]
Relating to scrap drilling pipe and accessories.
MJ-01 Entry Project [Member]
Relating to MJ-01 Entry Project.
znog_PropertyPlantAndEquipmentSelfConsumptionDisposals
Asset Disposals for Self-Consumption
Represents the amount of property, plant, and equipment disposed of during the period for self consumption.
znog_MonthlyLeasePayment
Monthly Lease Payment
Represents the amount of monthly lease payment.
Share-Based Payment Arrangement, Option [Member]
Warrant [Member]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Accumulated depreciation, property plant and equipment
Commitments and Contingencies Disclosure [Text Block]
Property and equipment, net
Balance
Balance
znog_TaxableIncomeInOrderToFullyUtilizeDeferredTaxAsset
Taxable Income In Order to Fully Utilize Deferred Tax Asset
Represents the amount of taxable income required to fully utilize deferred tax assets as of the balance sheet date.
Warrants and Options [Member]
Relating to warrants and options.
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).
Lessee, Operating Lease [Table Text Block]
Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions.
znog_CashCashEquivalentsAndShortTermInvestmentsWeightedAverageInterestRate
Cash, Cash Equivalents, and Short Term Investments, Weighted Average Interest Rate
Represents the weighted average interest rate of cash, cash equivalents, and short term investments as of the balance sheet date.
znog_ForeignCurrencyFluctuationRateDuringThePeriod
Foreign Currency Fluctuation Rate During the Period
Represents the percentage of fluctuation of foreign currency rates during the period.
Expiring September 23, 2032 2 [Member]
Relating to expiring September 23, 2032.
Cash flows from investing activities
Warrants [Member]
Relating to warrants.
Expiring January 4, 2033 2 [Member]
Relating to expiring January 4, 2033.
Exercise Price Range 5 [Member]
Relating to exercise price range 5.
Exercise Price Range 4 [Member]
Relating to exercise price range 4.
Exercise Price Range 6 [Member]
Relating to exercise price range 6.
Exercise Price Range 3 [Member]
Relating to exercise price range 3.
Exercise Price Range 2 [Member]
Relating to exercise price range 2.
Exercise Price Range 12 [Member]
Relating to exercise price range 12.
Exercise Price Range 11 [Member]
Relating to exercise price range 11.
Exercise Price Range 14 [Member]
Relating to exercise price range 14.
Exercise Price Range 13 [Member]
Relating to exercise price range 13.
Exercise Price Range 8 [Member]
Relating to exercise price range 8.
Exercise Price Range 7 [Member]
Relating to exercise price range 7.
Exercise Price Range 10 [Member]
Relating to exercise price range 10.
Income taxes
Income Tax Expense (Benefit)
Income tax expense
Accrued liabilities
us-gaap_IncreaseDecreaseInAccruedLiabilities
Exercise Price Range 9 [Member]
Relating to exercise price range 9.
Exercise Price Range 20 [Member]
Relating to exercise price range 20.
Exercise Price Range 19 [Member]
Relating to exercise price range 19.
Exercise Price Range 22 [Member]
Relating to exercise price range 22.
Exercise Price Range 21 [Member]
Relating to exercise price range 21.
Exercise Price Range 16 [Member]
Relating to exercise price range 16.
Exercise Price Range 15 [Member]
Relating to exercise price range 15.
Exercise Price Range 18 [Member]
Relating to exercise price range 18.
Exercise Price Range 17 [Member]
Relating to exercise price range 17.
Accounts payable
us-gaap_IncreaseDecreaseInAccountsPayable
Exercise Price Range 28 [Member]
Relating to exercise price range 28.
Exercise Price Range 27 [Member]
Relating to exercise price range 27.
Exercise Price Range 30 [Member]
Relating to exercise price range 30.
Exercise Price Range 29 [Member]
Relating to exercise price range 29.
Exercise Price Range 24 [Member]
Relating to exercise price range 24.
Exercise Price Range 23 [Member]
Relating to exercise price range 23.
Exercise Price Range 26 [Member]
Relating to exercise price range 26.
Exercise Price Range 25 [Member]
Relating to exercise price range 25.
Exercise Price Range 36 [Member]
Relating to exercise price range 36.
Exercise Price Range 35 [Member]
Relating to exercise price range 35.
Exercise Price Range 38 [Member]
Relating to exercise price range 38.
Exercise Price Range 37 [Member]
Relating to exercise price range 37.
Exercise Price Range 32 [Member]
Relating to exercise price range 32.
Exercise Price Range 31 [Member]
Relating to exercise price range 31.
Exercise Price Range 34 [Member]
Relating to exercise price range 34.
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Year)
Exercise Price Range 33 [Member]
Relating to exercise price range 33.
Exercise Price Range 43 [Member]
Relating to exercise price range 43.
Exercise Price Range 42 [Member]
Relating to exercise price range 42.
Exercise Price Range 45 [Member]
Relating to exercise price range 45.
General and administrative
Exercise Price Range 44 [Member]
Relating to exercise price range 44.
Cash and cash equivalents – restricted
Exercise Price Range 39 [Member]
Relating to exercise price range 39.
Exercise Price Range 41 [Member]
Relating to exercise price range 41.
Exercise Price Range 40 [Member]
Relating to exercise price range 40.
Exercise Price Range 51 [Member]
Relating to exercise price range 51.
Exercise Price Range 50 [Member]
Relating to exercise price range 50.
Exercise Price Range 53 [Member]
Relating to exercise price range 53.
Cash and cash equivalents
Exercise Price Range 52 [Member]
Relating to exercise price range 52.
Exercise Price Range 47 [Member]
Relating to exercise price range 47.
Exercise Price Range 46 [Member]
Relating to exercise price range 46.
Exercise Price Range 49 [Member]
Relating to exercise price range 49.
Exercise Price Range 48 [Member]
Relating to exercise price range 48.
znog_LesseeOperatingLeaseBaseRent
Lessee, Operating Lease, Base Rent
Represents the base rent of an operating lease.
Share based compensation costs
znog_RegulatoryExpenses
Regulatory Expenses
Represents the amount of regulatory expenses.
Exercise Price Range 54 [Member]
Relating to exercise price range 54.
znog_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree
2028 and thereafter
Amount of lessee's undiscounted obligation for lease payment for operating lease due after third 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).
Office and Vehicle Leases [Member]
Relating to office and vehicle leases.
znog_LesseeOperatingLeaseMileageCostAbove20000Miles
Lessee, Operating Lease, Mileage Cost Above 20,000 Miles (in USD per Mile)
Represents the mileage cost in excess of 20,000 miles as part of an operating lease.
znog_LesseeOperatingLeasePeriodicPayment
Lessee, Operating Lease, Periodic Payment
Represents the periodic payment of an operating lease.
The 2023 Chevy Equinox Lease [Member]
Relating to the 2023 Chevy Equinox lease.
The 2020 Chevy Equinix Lease [Member]
Relating to the 2020 Chevy Equinox lease.
znog_LesseeOperatingLeaseTaxesAndInsurance
Lessee, Operating Lease, Taxes and Insurance
Represents the amount of taxes and insurance as part of an operating lease.
znog_LesseeOperatingLeaseMaintenanceCost
Lessee, Operating Lease, Maintenance Cost
Represents the maintenance cost of a lease.
Corporate Office in Dallas, Texas [Member]
Relating to corporate office in Dallas, Texas.
znog_LesseeOperatingLeaseUtilityCharges
Lessee, Operating Lease, Utility Charges
Represents the utility charges as part of an operating lease.
Amendment Flag
znog_AggregateCharitableRoyaltyPercentage
Aggregate Charitable Royalty Percentage
Represents the aggregate percentage of royalty that is given to charitable foundations.
znog_CharitableRoyaltyPerFoundation
Charitable Royalty Per Foundation
Represents the percentage of royalty that goes to charitable foundations.
Bank Guarantees to Governmental Bodies [Member]
Relating to bank guarantees to governmental bodies.
City Area Code
Insurance Financing [Member]
Relating to Insurance Financing.
Use of Estimates, Policy [Policy Text Block]
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
znog_NumberOfMajorSuppliers
Number of Major Suppliers
Represents the number of major suppliers during the period.
New Accounting Pronouncements, Policy [Policy Text Block]
Field Office on Caesarea, Israel [Member]
Relating to the field office in Caesarea, Israel.
Three Suppliers [Member]
Relating to three suppliers.
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Loss on sale of property and equipment
Bank Guarantees [Member]
Relating to bank guarantees.
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common Stock, Shares, Outstanding (in shares)
Bank Guarantees to Others [Member]
Relating to bank guarantees to others.
Current Fiscal Year End Date
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Weighted average discount rate
Document Fiscal Period Focus
us-gaap_OperatingLeaseCost
Operating Lease, Cost
us-gaap_IncreaseDecreaseInDepositOtherAssets
Other deposits
Document Fiscal Year Focus
Lease, Cost [Table Text Block]
Document Period End Date
Addition of right of use lease assets and lease obligations
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Weighted average remaining lease term (years) (Year)
Entity File Number
us-gaap_IncreaseDecreaseInPrepaidExpensesOther
Prepaid expenses and other
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
Entity Small Business
Entity Shell Company
Document Information [Line Items]
Document Information [Table]
us-gaap_AreaOfRealEstateProperty
Area of Real Estate Property (Square Foot)
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
us-gaap_IncreaseDecreaseInOtherReceivables
Other receivables
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
Impairment of oil and gas property
Impairment of unproved oil and gas properties
Impairment of unproved oil and gas properties
Quarterly Financial Information [Text Block]
Entity Tax Identification Number
Entity Central Index Key
Entity Registrant Name
Value of options granted to employees, directors and others as non-cash compensation
Entity [Domain]
Legal Entity [Axis]
Entity Address, Address Line One
Supplier Concentration Risk [Member]
us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Costs associated with the issuance of shares
Capitalized interest costs
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Entity Address, City or Town
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Entity Address, Postal Zip Code
us-gaap_ProductionCosts
Drilling costs, and other operational related costs
us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization, Period Cost
Entity Address, State or Province
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Concentration Risk Type [Axis]
Material Terms of Trading Arrangement [Text Block]
Concentration Risk Type [Domain]
us-gaap_ExplorationCosts
Capitalized salary costs
Expiring January 17, 2032 2 [Member]
Relating to expiring January 17, 2032.
Entity Common Stock, Shares Outstanding
Trading Arrangements, by Individual [Table]
us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization
Project [Axis]
Project [Domain]
Expiring January 4, 2031 2 [Member]
Relating to expiring January 4, 2031.
Drilling costs, and other operational related costs
Capitalized salary costs
Expiring September 1, 2031 2 [Member]
Relating to expiring September 1, 2031.
Expiring August 12, 2032 2 [Member]
Relating to expiring August 12, 2032.
Expiring April 15, 2032 2 [Member]
Relating to expiring April 15, 2032.
Expiring May 21, 2031 2 [Member]
Relating to expiring May 21, 2031.
Expiring May 21, 2027 2 [Member]
Relating to expiring May 21, 2024.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Nature of Operations [Text Block]
Other
Local Phone Number
Funds received from option exercises (in shares)
Exercised (in shares)
us-gaap_TableTextBlock
Notes Tables
Funds received from option exercises
us-gaap_AreaOfLand
Area of Land (Acre)
Granted to employees, officers, directors and others* (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
us-gaap_WarrantsAndRightsOutstandingTerm
Warrants and Rights Outstanding, Term (Year)
znog_WarrantsExercised
Warrants Exercised (in shares)
The number of warrants that were exercised.
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Revision of Estimate
Liabilities Settled
Change in assets and liabilities, net:
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Subsequent Event [Member]
Lease obligation – non-current (see Note 8)
Total undiscounted future minimum lease payments
Operating Lease, Liability
Total operating lease liabilities
Subsequent Event Type [Axis]
Lease obligation – current (see Note 8)
Subsequent Event Type [Domain]
Oil and Gas, Cost Incurred [Policy Text Block]
Oil and Gas, Accounting Method, Full Cost or Successful Efforts [Policy Text Block]
Subsequent Events [Text Block]
Right of Use Lease Assets (see Note 8)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Lessee, Operating Lease, Liability, to be Paid
Total undiscounted future minimum lease payments
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: portion representing imputed interest
2027
2027
2028
Fair Value Measurement, Policy [Policy Text Block]
2025
2025
2026
2026
Segment Reporting, Policy [Policy Text Block]
Share-Based Payment Arrangement, Employee [Member]
znog_ProceedsFromIssuanceOrSaleOfEquityNet
Proceeds from Issuance or Sale of Equity, Net
The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity, net of issuance costs.
znog_EquityAgreementSharePriceThreshold
Equity Agreement, Share Price Threshold (in dollars per share)
Represents the share price threshold for an equity agreement.
znog_EquityAgreementAmountAuthorized
Equity Agreement, Amount Authorized
Represents the amount of equity authorized to be issued as part of an agreement.
Waiver Term Sheet Warrants [Member]
Relating to the waiver term sheet warrants.
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
us-gaap_OtherAssetsNoncurrent
Total other assets
Cost of options issued to employees, directors and others as non-cash compensation
Waiver Term Sheet Agreement [Member]
Relating to the waiver term sheet agreement.
Share-Based Payment Arrangement, Nonemployee [Member]
us-gaap_FiniteLivedIntangibleAssetUsefulLife
Finite-Lived Intangible Asset, Useful Life (Year)
Earnings Per Share, Policy [Policy Text Block]
Oil and gas sales
Revenues
Comprehensive Income, Policy [Policy Text Block]
Income Tax, Policy [Policy Text Block]
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract (Month)
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term (Year)
Depreciation
Depreciation
Asset Depreciation
Unproved oil and gas properties, full cost method (see Note 4)
Oil and Gas, Full Cost Method, Property and Equipment, after Accumulated Depletion
us-gaap_AssetsCurrent
Total current assets
Share-Based Payment Arrangement [Policy Text Block]
Equity [Text Block]
Common stock, par value $.01; Authorized: 1,200,000,000 shares at December 31, 2024 : Issued and outstanding: 965,362,131 and 640,002,580 shares at December 31, 2024 and 2023, respectively
Adjustments required to reconcile net loss to net cash used in operating activities:
Common Stock, Shares Authorized (in shares)
Common Stock, Shares Authorized (in shares)
Common Stock, Shares, Issued (in shares)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Common Stock, Capital Shares Reserved for Future Issuance (in shares)
us-gaap_DeferredTaxAssetsValuationAllowance
Less – valuation allowance
Statistical Measurement [Domain]
us-gaap_OperatingLeasePayments
Operating Lease, Payments
Maximum [Member]
Minimum [Member]
Expiring January 4, 2034 [Member]
Relating to expiring January 4, 2034.
Product and Service [Axis]
Product and Service [Domain]
Asset Retirement Obligation [Policy Text Block]
One Senior Officer 2 [Member]
Relating to one senior officer 2.
us-gaap_DeferredTaxAssetsNet
Net deferred tax assets
Statistical Measurement [Axis]
Environmental Costs, Policy [Policy Text Block]
Proceeds from issuance of stock and exercise of warrants
Represents the cash in flow from issuance of common stock and warrant exercises.
Warrants Expiring March 31, 2025 [Member]
Relating to warrants expiring March 31, 2025.
Expiring January 4, 2027 2 [Member]
Relating to expiring January 4, 2027.
Other costs
Represents the other capitalized costs excluded from amortization from oil and gas as part of the full cost method.
Warrants Expiring January 31, 2026 [Member]
Relating to warrants expiring January 31, 2026.
Post impairment of unproved oil and gas properties
Post-Impairment of Oil and Gas Properties
Represents the post-impairment of oil and gas properties.
Warrants Expiring March 31, 2025 2 [Member]
Relating to warrants expiring March 31, 2025.
Funds received from sale of DSPP units and shares and exercise of warrants
Represents the amount of stock issued from dividend reinvestment plan and warrant exercises.
Expiring September 22, 2033 2 [Member]
Relating to expiring September 22, 2033.
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax asset
Expiring September 1, 2034 [Member]
Relating to expiring September 1, 2034.
Funds received from sale of DSPP units and shares and exercise of warrants (in shares)
Represents the number of shares issued from dividend reinvestment plans and warrants exercised.
Expiring January 4, 2034 2 [Member]
Relating to expiring January 4, 2034.
us-gaap_DeferredTaxAssetsOther
Other
Nonvested Options [Member]
Relating to nonvested options.
Property, Plant and Equipment [Table Text Block]
us-gaap_DeferredTaxAssetsGross
Total gross deferred tax assets
us-gaap_DeferredIncomeTaxLiabilities
Total gross deferred tax liabilities
Vested Options [Member]
Relating to vested options.
znog_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndWarrantsExercisableNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options and Warrants, Exercisable, Number (in shares)
Represents the number of options and warrants exercisable.
znog_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndWarrantsOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options and Warrants, Outstanding, Number (in shares)
Represents the number of options and warrants outstanding.
Common Stock Purchase Warrant [Member]
Relating to common stock purchase warrants.
znog_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndWarrantsOutstandingIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options and Warrants, Outstanding, Intrinsic Value
Represents the intrinsic value of options and warrants outstanding as of the balance sheet date.
TPL Insurance Policy Financing [Member]
Relating to the TPL Insurance Financing.
Rig Insurance Financing [Member]
Relating to Rig Insurance Financing.
D & O Insurance Policy Financing [Member]
Relating to D & O Insurance Financing.
Foreign exchange (loss)
Control of Well Insurance Policy Financing [Member]
Relating to control of Well Insurance Policy Financing.
Asset Additions
us-gaap_PropertyPlantAndEquipmentDisposals
Asset Disposals for Self-Consumption
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Cash flows from operating activities
us-gaap_WarrantsAndRightsOutstanding
Warrants and Rights Outstanding
Statement [Line Items]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Additional paid-in capital
Stockholders’ equity
Property, Plant and Equipment, Policy [Policy Text Block]
Financial gain (expenses), net
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
Net operating loss carry forwards
Assets held for severance benefits
The amount of assets held for severance benefits.
Provision for severance pay
Provision for Severance Pay
The provision for severance pay.
Current assets
Drilling Rig and Related Equipment [Member]
Represents the Drilling rig and related equipment.
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, cash equivalents and restricted cash – beginning of period
Cash, cash equivalents and restricted cash – end of period
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net decrease in cash, cash equivalents and restricted cash
Other assets
us-gaap_Liabilities
Total liabilities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
Commitments and contingencies (see Note 9)
us-gaap_OperatingIncomeLoss
Loss from operations
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
us-gaap_DeferredTaxLiabilitiesOther
Other
Other income (expense), net
Prepaid expenses and other
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
Property and Equipment [Member]
Represents the property and equipment.
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Depreciation of oil and gas equipment
The amount of depreciation related to the oil and gas equipment.
Unpaid investments in oil and gas properties
The unpaid investment in the oil and gas properties.
znog_IncreaseDecreaseInGovernmentAssistance
Governmental receivables
Represents the increase (decrease) in government assistance.
Severance pay, net
The increase (decrease) in severance pay.
us-gaap_PaymentsOfStockIssuanceCosts
Payments of Stock Issuance Costs
Costs paid related to the issuance of new shares
Unpaid Costs associated with the issuance of shares
The unpaid issuance costs during the period.
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Property and equipment
Property and equipment
us-gaap_GuarantyLiabilities
Guaranty Liabilities
Oil and Gas Operations [Member]
The oil and gas operations.
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization [Table Text Block]
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity
Scenario [Domain]
Oil and Gas, Full Cost Method, Property and Equipment [Text Block]
us-gaap_ProceedsFromWarrantExercises
Proceeds from Warrant Exercises
Oil and Gas, Present Activity [Table Text Block]
Retained Earnings [Member]
Proceeds from exercise of stock options
Title and Position [Domain]
Title and Position [Axis]
Scenario [Axis]
Additional Paid-in Capital [Member]
Common Stock [Member]
Megiddo Valleys License 434 [Member]
Relating to Megiddo Valleys License 434.
Spare Parts [Member]
Relating to spare parts.
Equity Components [Axis]
I - 35 Drilling Rig [Member]
Relating to the I-35 drilling rig.
Equity Component [Domain]
us-gaap_IncomeTaxExaminationPenaltiesAccrued
Income Tax Examination, Penalties Accrued
Assets Held for Severance Benefits [Policy Text Block]
The disclosure of the company's policy regarding assets held for severance benefits.
Short Term Deposits [Policy Text Block]
The disclosure regarding the company's policy for short term deposits.
ZNWAA (in dollars per share)
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Related Parties [Policy Text Block]
The disclosure of the company's policy regarding related parties.
Class of Warrant or Right [Axis]
Warrants [Policy Text Block]
The disclosure of the company's policy regarding warrants.
Class of Warrant or Right [Domain]
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)
Other Separate Asset [Member]
Relating to an other separate asset.
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
Pre-tax loss as reported
Loss before income taxes
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
Provision for Severance Pay [Text Block]
The entire disclosure for severance pay provisions.
Oil and Gas Properties [Member]
znog_DepositsToProvisionForSeverancePay
Deposits to Provision for Severance Pay
Represents the amount of deposits made to provision for severance pay.
Israel Tax Authority [Member]
ICFR Auditor Attestation Flag
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Document Annual Report
Cash and Cash Equivalents, Policy [Policy Text Block]
Entity Incorporation, State or Country Code
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
us-gaap_OpenTaxYear
Open Tax Year
Document Transition Report
Document Financial Statement Error Correction [Flag]
Basis of Accounting, Policy [Policy Text Block]
Entity Interactive Data Current
Title of 12(g) Security
Schedule Of Impairment Of Unproved Oil And Gas Properties [Table Text Block]
Tabular disclosure of impairment of unproved oil and gas properties.
Drilling Costs, and Other Operational Related Costs [Member]
Relating to drilling costs, and other operational related costs.
Accrued Liabilities [Text Block]
The entire disclosure for accrued liabilities.
Drilling provisions
The carrying value as of the balance sheet date of drilling obligations incurred through that date. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
Capitalized Acquisition Costs [Member]
Relating to capitalized acquisition costs.
znog_OilAndGasFullCostMethodCapitalizedCostExcludedFromAmortizationNonCashPeriodCost
Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization, Non Cash Period Cost
Amount of capitalized acquisition, exploration, and development costs and capitalized interest incurred during period and excluded from amortization for oil- and gas-producing activities accounted for under full cost method that is not made in cash.
Five Senior Officers and One Staff Member [Member]
Relating to five senior officers and one staff member.
One Board Member [Member]
Relating to one board member.
us-gaap_AssetRetirementObligation
Asset Retirement Obligation
Asset Retirement Obligations, Beginning Balance
Retirement Obligations, Ending Balance
One Senior Officer [Member]
Relating to one senior officer.
The 2021 Omnibus Incentive Stock Options Plan [Member]
Relating to the 2021 Omnibus Incentive Stock Options Plan.
znog_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Fair Value
The grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.
Auditor Name
Three Consultants [Member]
Relating to three consultants.
Nine Board Members [Member]
Relating to nine board members.
Auditor Firm ID
One Staff Member [Member]
Relating to one staff member.
Four Senior Officers and Nine Staff Members [Member]
Relating to four senior officers and nine staff members.
Auditor Location
Five Staff Members and One Senior Officer [Member]
Relating to five staff members and one senior officer.
Weighted-average fair value of underlying stock at grant date (in dollars per share)
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
Dividend Reinvestment and Stock Purchase Plan (DSPP) [Member]
Relating to the dividend reinvestment and stock purchase plan (DSPP)
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
ZNWAE Warrant [Member]
Relating to the ZNWAE warrant.
Scenario, Plan [Member]
ZNWAD Warrant [Member]
Relating to the ZNWAD warrant.
Asset Class [Axis]
znog_ClassOfWarrantOrRightPriceOfWarrantOrRight
Class of Warrant or Right, Price of Warrant or Right (in dollars per share)
Represents the price of a warrant or right.
Asset Class [Domain]
Statement [Table]
Statement of Financial Position [Abstract]
ZNWAL Warrants [Member]
Relating to the ZNWAL warrants.
Weighted-average shares outstanding–basic and diluted (in thousands) (in shares)
ZNWAK Warrants [Member]
Relating to the ZNWAK warrants.
ZNWAN Warrants [Member]
Relating to the ZNWAN warrants.
ZNWAM Warrants [Member]
Relating to the ZNWAM warrants.
Accounts Payable [Member]
ZNWAG Warrants [Member]
Relating to the ZNWAG warrants.
ZNWAF Warrant [Member]
Relating to the ZNWAF warrant.
Net (loss) gain per share – basic and diluted (in dollars per share)
Net loss per share of common stock - basic and diluted (in US$) (in dollars per share)
ZNWAJ Warrants [Member]
Relating to the ZNWAJ warrants.
ZNWAH Warrants [Member]
Relating to the ZNWAH Warrants.
ZNWAS Warrants [Member]
Relating to the ZNWAS warrants.
ZNWAR Warrants [Member]
Relating to the ZNWAR warrants.
Statement of Cash Flows [Abstract]
ZNWAU Warrants [Member]
Relating to the ZNWAU warrants.
ZNWAT Warrants [Member]
Relating to the ZNWAT warrants.
ZNWAP Warrants [Member]
Relating to the ZNWAP warrants.
ZNWAO Warrants [Member]
Relating to the ZNWAO warrants.
Lease Contractual Term [Domain]
Statement of Stockholders' Equity [Abstract]
ZNWAQ Warrants [Member]
Relating to the ZNWAQ warrants.
Lease Contractual Term [Axis]
ZNWAP and ZNWAR Warrants [Member]
Relating to the ZNWAP and ZNWAR warrants.
Income Statement [Abstract]
Plan Participants Above $100 a Month [Member]
Relating to plan participants above $100 a month.
ZNWAY Warrants [Member]
Relating to the ZNWAY warrants.
Plan Participants Above $500 a Month [Member]
Relating to plan participants above $500 a month.
Plan Participants Above $250 a Month [Member]
Relating to plan participants above $250 a month.
Proceeds From Issuance [Member]
Relating to proceeds from issuance.
Schedule of Accrued Liabilities [Table Text Block]
Investor Concentration Risk [Member]
Relating to investor concentration risk.
ZNWAV, ZNWAW, ZNWAX Warrants [Member]
Relating to the ZNWAV, ZNWAW, ZNWAX warrants.
us-gaap_RepaymentsOfDebt
Repayments of Debt
znog_ClassOfWarrantOrRightTerminationProceedsThreshold
Class of Warrant or Right, Termination, Proceeds Threshold
Represents the amount of proceeds that would cause a warrant or right issuance to end.
Plan Participants Above $50 a Month [Member]
Relating to plan participants above $50 a month.
ZNWAZ Warrants [Member]
Relating to ZNWAZ warrants.
ZNWBA Warrants [Member]
Relating to the ZNWBA warrants.
ZNWAW Warrants [Member]
Relating to ZNWAW warrants.
Quarterly Financial Information [Table Text Block]
ZNWAV Warrants [Member]
Relating to the ZNWAV warrants.
ZNWAX Warrants [Member]
Relating to the ZNWAX warrants.
ZNWAI Warrants [Member]
Relating to ZNWAI warrants.
Subscription Rights [Member]
Relating to Subscription rights.
ZNWAA Warrants [Member]
Relating to the ZNWAA warrants.
Shareholders [Member]
Relating to shareholders.
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Subscription Right Offering [Member]
Relating to a subscription right offering.
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Five Senior Officers and Two Staff Members [Member]
Relating to five senior officers and two staff members.
Risks and Uncertainties [Text Block]
The entire disclosure for risks and uncertainties.
Expiring October 1, 2027 [Member]
Relating to expiring October 1, 2027.
Expiring September 22, 2033 [Member]
Relating to expiring September 22, 2033.
Expiring August 12, 2032 [Member]
Relating to expiring August 12, 2032.
Expiring December 10, 2029 [Member]
Relating to expiring December 10, 2029.
Expiring April 15, 2032 [Member]
Relating to expiring April 15, 2032.
Expiring January 1, 2028 [Member]
Relating to expiring January 1, 2028.
Expiring November 18, 2029 [Member]
Relating to expiring November 18, 2029.
Expiring February 28, 2028 [Member]
Relating to expiring February 28, 2028.
Expiring May 21, 2027 [Member]
Relating to expiring May 21, 2027.
Expiring April 17, 2027 [Member]
Relating to expiring April 17, 2027.
us-gaap_LiabilitiesNoncurrent
Total long-term liabilities
Expiring April 6, 2028 [Member]
Relating to expiring April 6, 2028.
Expiring January 4, 2028 [Member]
Relating to expiring January 4, 2028.
Cash flows from financing activities
Expiring January 4, 2027 [Member]
Relating to expiring January 4, 2027.
Expiring January 1, 2027 [Member]
Relating to expiring January 1, 2027.
U.S. statutory tax rate
Expiring July 17, 2031 [Member]
Relating to expiring July 17, 2031.
Expiring May 21, 2031 [Member]
Relating to expiring May 21, 2031.
Expiring January 5, 2032 [Member]
Relating to expiring January 5, 2032.
Change in valuation allowance
Expiring September 1, 2031 [Member]
Relating to expiring September 1, 2031.
Expiring September 18, 2029 [Member]
Relating to expiring September 18, 2029.
Expiring January 6, 2029 [Member]
Relating to expiring January 6, 2029.
Expiring January 4, 2031 [Member]
Relating to expiring January 4, 2031.
Expiring January 5, 2030 [Member]
Relating to expiring January 5, 2030.
Expiring September 23, 2032 [Member]
Relating to expiring September 23, 2032.
Expiring September 1, 2033 [Member]
Relating to expiring September 1, 2033.
Expiring January 4, 2033 [Member]
Relating to expiring January 4, 2033.
Expiring September 1, 2032 [Member]
Relating to expiring September 1, 2032.
Expiring January 17, 2032 [Member]
Relating to expiring January 17, 2032.
Expiring December 2, 2025 [Member]
Relating to expiring December 2, 2025.
Expiring December 10, 2025 [Member]
Relating to expiring December 10, 2025.
Expiring September 3, 2025 [Member]
Relating to expiring September 3, 2025.
Expiring August 1, 2032 [Member]
Relating to expiring August 1, 2032.
Expiring January 4, 2032 [Member]
Relating to expiring January 4, 2032.
Expiring June 15, 2027 [Member]
Relating to expiring June 15, 2027.
Expiring September 3, 2029 [Member]
Relating to expiring September 3, 2029.
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
Amortization of Right of Use Lease Asset
Expiring January 2, 2025 [Member]
Relating to expiring January 2, 2025.
Expiring July 9, 2031 [Member]
Relating to expiring July 9, 2031.
Permanent differences
Supplier [Axis]
Class of Stock [Axis]
Supplier [Domain]
Exercise Price Range 1 [Member]
Relating to exercise price range 1.
Weighted average exercise price (in dollars per share)
Label (Year)
Upper range (in dollars per share)
Options outstanding (in shares)
Other receivables
Exercise Price Range [Axis]
Exercise Price Range [Domain]
Lower range (in dollars per share)