Document And Entity Information
Entity Operated Units [Member]
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Authorized, Number of Shares
Provision for income taxes
Total provision for income taxes
Significant Accounting Policies
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note B - Summary of Significant Accounting Policies
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note C - Net Income Per Share
Trading Arrangements, by Individual [Table]
us-gaap_NumberOfRestaurants
Number of Restaurants
Franchised restaurants operating at the beginning of the period
Franchised restaurants operating at the end of the period
Note D - Accounts and Other Receivables, Net
Material Terms of Trading Arrangement [Text Block]
Note E - Prepaid Expenses and Other Current Assets
Insider Trading Policies and Procedures Adopted [Flag]
Insider Trading Policies and Procedures Adopted [Flag]
Note F - Property and Equipment, Net
Note G - Accrued Expenses and Other Current Liabilities
Note H - Income Taxes
Note I - Segment Information
Minimum [Member]
Note J - Long-term Debt
Note K - Leases
Insider Trading Policies and Procedures [Line Items]
Statistical Measurement [Domain]
Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans
Maximum [Member]
Note B - Summary of Significant Accounting Policies - Property and Equipment (Details)
Share Repurchase Program [Axis]
Note B - Summary of Significant Accounting Policies - Summary of Franchise Openings and Closings for the Nathan's Franchise Restaurant System (Details)
Share Repurchase Program [Domain]
Note B - Summary of Significant Accounting Policies - Contract Liabilities From Contracts With Customers (Details)
Note B - Summary of Significant Accounting Policies - Significant Changes in Deferred Franchise Fees (Details)
Cost of Goods and Service Benchmark [Member]
Note B - Summary of Significant Accounting Policies - Remaining Performance Obligations (Details)
Accounts payable, accrued expenses and other current liabilities
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
us-gaap_MultiemployerPlanEmployerContributionCost
Multiemployer Plan, Employer Contribution, Cost
Note B - Summary of Significant Accounting Policies - Remaining Performance Obligations 2 (Details)
Note B - Summary of Significant Accounting Policies - Revenues by Geographical Market (Details)
Note B - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)
Note C - Net Income Per Share - Earnings Per Share Reconciliation (Details)
Note D - Accounts and Other Receivables, Net - Summary of Accounts and Other Receivables (Details)
Note D - Accounts and Other Receivables, Net - Changes in Allowance for Doubtful Accounts (Details)
Note E - Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Details)
Note F - Property and Equipment, Net - Property and Equipment (Details)
Note G - Accrued Expenses and Other Current Liabilities - Accrued Expenses and Other Current Liabilities (Details)
Note H - Income Taxes - Income Tax Provision (Benefit) (Details)
Note H - Income Taxes - Effective Income Tax Rate Reconciliation (Details)
Note H - Income Taxes - Schedule of Income Taxes Paid (Details)
Note H - Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details)
Note H - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details)
Note H - Income Taxes - Summary of Income Tax Examinations (Details)
Note I - Segment Information - Operating Segment Information (Details)
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate Reconciliation, Percent
Total provision for income taxes, percent
Note J - Long-term Debt - Summary of Debt (Details)
Note J - Long-term Debt - Schedule Of Maturities Of Long Term Debt (Details)
Income tax provision at the U.S. Federal statutory rate, percent
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Note K - Leases - Components of Net Lease Cost (Details)
Note K - Leases - Components of Net Lease Cost 2 (Details)
Granted, 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
Exercised, weighted average exercise price (in dollars per share)
Note K - Leases - Cash Paid for Amounts Included in the Measurement of Lease Liabilities (Details)
Note K - Leases - Weighted Average Remaining Lease Term and Weighted-average Discount Rate (Details)
Note K - Leases - Future Lease Commitments to Be Paid and Received (Details)
Note K - Leases - Components of Lease Income (Details)
Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Compensation Cost Charged to Expense Under All Stock-based Incentive Awards (Details)
Payroll expense
Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Stock Option Valuation Assumptions (Details)
us-gaap_DividendsCommonStockCash
Dividends on common stock
Income Tax Jurisdiction [Domain]
Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - A Summary of the Status of the Company's Stock Options (Details)
Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans - Transactions With Respect to Restricted Stock (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Merger costs, percent
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringCharges
Land
us-gaap_CommonStockDividendsPerShareDeclared
Common Stock, Dividends, Per Share, Declared
Change in uncertain tax positions, net, percent
Leasehold improvements
Leasehold Improvements [Member]
State and local income taxes, net of U.S. Federal income tax benefit, percent
us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
us-gaap_IncreaseDecreaseInInventories
Inventories
Nondeductible executive compensation, percent
us-gaap_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
Other adjustments, percent
Franchise Fees and Royalties [Member]
Information related to franchise fees and royalties.
Dividends [Axis]
Segment Reporting [Text Block]
Dividends [Domain]
us-gaap_ContractualObligation
Contractual Obligation
Award Type [Axis]
Segment Reporting [Table Text Block]
Adjustments to reconcile net income to net cash provided by operating activities
us-gaap_Liabilities
Total liabilities
Plan Name [Axis]
Plan Name [Domain]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ deficit
Consolidation Items [Axis]
Share-based compensation expense
Title and Position [Axis]
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
us-gaap_ShareBasedCompensation
Share-based compensation expense
Subsequent Event [Member]
Consolidation Items [Domain]
Senior Notes [Member]
Lessee, Lease, Description [Table]
Deferred Franchise Fees And Other Deferred Revenue [Member]
Represents deferred franchise fees and other deferred revenue.
Location, Statement of Income, Balance [Axis]
Changes in operating assets and liabilities:
nath_ContractWithCustomerLiabilityAmountOfRevenueRecognized
Revenue recognized during the period
Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase in cash and cash equivalents
Branded Products [Member]
Represents information about branded products.
Deductible prepaid expense
Employment Contracts [Member]
us-gaap_CommonStockDividendsPerShareCashPaid
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)
Contract with Customer, Deferred Franchise Fees [Table Text Block]
Tabular disclosure of significant changes in deferred franchises fees.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Statement [Table]
Start-up Activities, Cost Policy [Policy Text Block]
Insurance
California Franchise Tax Board [Member]
Credit Facility [Axis]
Operating cash flows from operating leases
Credit Facility [Domain]
us-gaap_PrepaidTaxes
Income taxes
Revolving Credit Facility [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Income Tax Authority, Name [Axis]
nath_PaymentsOfOrdinaryDividendsAndSpecialDividends
Dividends paid to stockholders
Payments Of Ordinary Dividends and Special Dividends
Amount of cash outflow in the form of ordinary and special dividends to common shareholders of the parent entity.
Income Tax Authority, Name [Domain]
Machinery, equipment, furniture and fixtures
Mergers, Acquisitions and Dispositions Disclosures [Text Block]
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
New Jersey Division of Taxation [Member]
us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
New York State Division of Taxation and Finance [Member]
Line of Credit Facility, Lender [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Unvested, shares (in shares)
Unvested, shares (in shares)
Lender Name [Axis]
Vested, weighted-average grant date fair value (in dollars per share)
Unvested, weighted average grant date fair value (in dollars per share)
Unvested, weighted average grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Long-Term Debt, Type [Axis]
The 2019 Stock Incentive Plan [Member]
Represents information about 2019 Stock Incentive Plan.
The 2010 Stock Incentive Plan [Member]
Represents information pertaining to 2010 Stock Incentive Plan.
Product and Service [Domain]
Product and Service [Axis]
us-gaap_LineOfCredit
Long-Term Line of Credit
us-gaap_LegalFees
Legal Fees
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant, and Equipment, Useful Life
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Line of Credit Facility [Table]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested, Units (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease commitments, payments operating leases
us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables
Accounts and other receivables, net
Weighted average discount rate:
Weighted-average option fair values (in dollars per share)
2027, payments operating leases
Exercised, aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Schedule of Maturities of Long-Term Debt [Table Text Block]
Options exercisable, weighted average exercise price (in dollars per share)
2029, payments operating leases
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options outstanding (in shares)
Options outstanding (in shares)
Commitments and Contingencies Disclosure [Text Block]
2028, payments operating leases
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options outstanding, weighted average exercise price (in dollars per share)
Options outstanding, weighted average exercise price (in dollars per share)
Nature of Expense [Axis]
Statement [Line Items]
2030, payments operating leases
Options outstanding, aggregate intrinsic value
Common Stock, Shares, Issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common Stock, Shares, Outstanding (in shares)
Balance (in shares)
Balance (in shares)
2030, receipts subleases
Award Type [Domain]
Advertising Fund Revenue [Member]
Revenue from advertising fund.
us-gaap_LessorOperatingLeasePaymentsToBeReceived
Total lease commitments, receipts subleases
Interest rate
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Common Stock, Shares Authorized (in shares)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Volatility
Operating Lease, Lease Income [Table Text Block]
2027, receipts subleases
Operating lease income, net
Dividend yield
Schedule of Accrued Liabilities [Table Text Block]
2029, receipts subleases
2028, receipts subleases
Common stock, $.01 par value; 30,000,000 shares authorized; 9,383,920 and 9,379,025 shares issued; and 4,094,405 and 4,089,510 shares outstanding at March 29, 2026 and March 30, 2025, respectively
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two
Fair Value of Financial Instruments, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One
Supplier [Axis]
Supplier [Domain]
Accounts payable
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Professional fees
Term Loan [Member]
Represents the term loan agreement.
Subsequent Events [Text Block]
Rent and occupancy costs
Accrued expenses and other current liabilities (Note G)
us-gaap_AccruedLiabilitiesCurrent
Total accrued expenses and other current liabilities
Concentration Risk Type [Axis]
Proceeds from Credit Facility
Payroll and other benefits
Significant Accounting Policies [Text Block]
Citi Bank, N.A. [Member]
Represents the citi bank member.
nath_LineOfCreditFacilityIncrementalBorrowingIncreaseAmount
Line of Credit Facility, Incremental Borrowing Increase Amount
The additional increase amount of the revolving credit loan.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: Amount representing interest
Long-term portion of operating lease liabilities (Note K)
Operating Lease, Liability, Noncurrent
Sales, use and other taxes
us-gaap_SalesAndExciseTaxPayableCurrent
Options outstanding, weighted average remaining contractual term (Year)
us-gaap_OtherAccruedLiabilitiesCurrent
Other
nath_DebtInstrumentCovenantDebtIssuance
Debt Instrument, Covenant, Debt Issuance
Represents the percentage of net cash proceed from debt issuance for the covenant terms to voluntarily pay off the loans.
Present value of lease liabilities
Current portion of operating lease liabilities (Note K)
Operating Lease, Liability, Current
nath_DebtInstrumentCovenantEquityIssuance
Debt Instrument Covenant, Equity Issuance
Represents the percentage of equity issuance during the period.
us-gaap_InterestPayableCurrent
Interest
nath_DebtInstrumentPeriodicPaymentPercent
Debt Instrument, Periodic Payment, Percent
The percent of periodic payments for the debt note.
Accounts Receivable [Member]
Current portion of long-term debt (Note J)
Less: current portion of long-term debt
Expected life (years) (Year)
Options exercisable, weighted average remaining contractual term (Year)
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Concentration Risk Type [Domain]
nath_DebtInstrumentCovenantMaximumConsolidatedNetLeverageRatio
Debt Instrument, Covenant, Maximum Consolidated Net Leverage Ratio
The maximum consolidated net leverage ratio required under the covenant of the debt instrument.
nath_DebtInstrumentCovenantMaximumFixedChargeRatio
Debt Instrument, Covenant, Maximum Fixed Charge Ratio
The maximum fixed charge ratio required under the covenant of the debt instrument.
2028
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
nath_DebtInstrumentCovenantExtraordinaryReceiptsAmount
Debt Instrument, Covenant, Extraordinary Receipts, Amount
The monetary value of extraordinary receipts related to the debt covenant to voluntarily pay the debt note.
Long-term debt, net
Long-term debt, net of unamortized debt issuance costs of $257 and $327, respectively (Note J)
nath_DebtInstrumentCovenantExtraordinaryReceiptPercentage
Debt Instrument, Covenant, Extraordinary Receipt Percentage
Represents the percentage of extraordinary receipts the company must reinvest for the debt covenant to voluntarily pay the debt note.
2030
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Construction-in-progress
2027
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Income Tax Jurisdiction, Domestic Federal [Member]
nath_DebtInstrumentCovenantDispositionOfCertainIndividualAssetsPercentage
Debt Instrument, Covenant, Disposition of Certain Individual Assets, Percentage
Represents the percentage of net cash proceeds from the disposition of certain assets individually for the covenant terms for voluntary payment of the loan
nath_DebtInstrumentCovenantDispositionOfCertainAssetsIndividuallyAmount
Debt Instrument, Covenant, Disposition of Certain Assets Individually, Amount
The monetary value of the disposition of cerrtain assets individually in relation to the covenant to voluntarily pay off debt.
Income Tax Jurisdiction, Domestic State and Local [Member]
Total debt, net of debt issuance costs
us-gaap_LongTermDebt
Loss Contingencies [Table]
Statement of Stockholders' Equity [Abstract]
us-gaap_OperatingLeaseIncomeComprehensiveIncomeExtensibleList
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]
Statement of Cash Flows [Abstract]
STOCKHOLDERS’ DEFICIT
Product Concentration Risk [Member]
Long-Term Debt, Type [Domain]
Equity Components [Axis]
2027, net leases
Amount of operating lease liability, net of sublease receivable, due in year one.
Marketing
Represents current prepaid marketing expense.
Share-Based Payment Arrangement [Policy Text Block]
nath_PrepaidRealEstateTaxesExpenseCurrent
Real estate taxes
Represents current prepaid real estate taxes expense.
Equity Component [Domain]
Equity [Text Block]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
New deferrals due to cash received and other
Represents the amount of additions during the period to the liability from contracts with customers.
Cost of sales
Senior Secured 2025 Notes [Member]
Related to the senior secured notes maturing in 2025.
Property and equipment, net of accumulated depreciation of $12,225 and $12,295, respectively (Note F)
Property and equipment, net
us-gaap_PropertyPlantAndEquipmentGross
Total property and equipment
Provision for expected credit losses
Subsequent Event Type [Domain]
Subsequent Event [Table]
Granted, weighted average remaining contractual life (Year)
Weighted average remaining contractual term for option awards granted during the period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Subsequent Event Type [Axis]
us-gaap_DeferredIncomeTaxAssetsNet
Deferred income taxes (Note H)
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]
Property, Plant, and Equipment [Policy Text Block]
Cost of Goods and Service [Policy Text Block]
Share-based compensation
Supplier Finance Program [Table]
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Summary of Income Tax Contingencies [Table Text Block]
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Share-Based Payment Arrangement, Option [Member]
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Cash paid during the year for:
Franchise Royalties [Member]
Represents the franchise royalties.
CURRENT LIABILITIES
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_CurrentFederalTaxExpenseBenefit
Current
Supplier Concentration Risk [Member]
Secured Overnight Financing Rate (SOFR) [Member]
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Current
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Customer Concentration Risk [Member]
Lease, Cost [Table Text Block]
us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Revenue Benchmark [Member]
Medium-Term Note [Member]
Lessee, Leases [Policy Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Less: accumulated depreciation and amortization
nath_PropertyDepreciationAndAmortization
Property Depreciation and Amortization
The amount of depreciation and amortization associated with property.
General and administrative expenses
Fiscal Period, Policy [Policy Text Block]
Income before provision for income taxes
Income before provision for income taxes
Loss on debt extinguishment (NOTE J)
Loss on debt extinguishment
Gain (Loss) on Extinguishment of Debt
Additional paid-in capital
us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Debt Disclosure [Text Block]
Prepaid expenses and other current assets (Note E)
Total prepaid expenses and other current assets
Use of Estimates, Policy [Policy Text Block]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of property and equipment
UNITED STATES
Long-term Debt
Total
Non-US [Member]
Goodwill and Intangible Assets, Policy [Policy Text Block]
Arthur Treacher’s [Member]
Represents Arthur Treacher’s.
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
CURRENT ASSETS
Schedule of Debt [Table Text Block]
us-gaap_AssetsCurrent
Total current assets
Segment gross profit
Accounts receivable, gross, current
Restricted Stock Units (RSUs) [Member]
Debt Instrument, Name [Domain]
us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Exercised (in shares)
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Debt Instrument, Periodic Payment, Principal
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired
Debt Instrument [Axis]
Cash flows from operating activities:
Cash flows from investing activities:
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Cash flows from financing activities:
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_PaymentsOfDebtIssuanceCosts
Debt issuance costs
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities
nath_AccountsReceivableAllowanceForCreditLossWriteoffRecovery
Write offs and other
Amount of direct write-downs (recovery) of accounts receivable charged against the allowance.
us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Long-Lived Asset, Held and Used, Impairment Loss
Advertising Cost [Policy Text Block]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
New York City Tax Commission [Member]
Information pertaining to the New York City commission.
Advertising fund expense
Advertising Expense
Operating Segments [Member]
Accounting Policies [Abstract]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Segments [Domain]
us-gaap_DeferredFinanceCostsGross
Less: unamortized debt issuance costs
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table]
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Less: allowance for doubtful accounts
Beginning balance
Ending balance
us-gaap_UnamortizedDebtIssuanceExpense
Unamortized Debt Issuance Expense
Segments [Axis]
nath_AccountsReceivablePaymentTerms
Accounts Receivable Payment Terms
Nathan's standard payment terms.
Branded Product Sales [Member]
Branded product sales [member]
Franchise and License Royalties [Member]
Franchise and license royalties [member]
Internal Revenue Service (IRS) [Member]
Income Statement [Abstract]
Other Receivables [Member]
Other receivables [member]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Deferred
us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits, beginning of year
Unrecognized tax benefits, end of year
nath_DeferredLicenseRoyalties
Deferred License Royalties
The amount of deferred License royalties.
us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax liabilities
Company-operated Restaurants [Member]
Represents information about company-operated restaurants.
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_DeferredIncomeTaxExpenseBenefit
Deferred income taxes
nath_DeferredAdvertisingFund
Deferred Advertising Fund
The amount of deferred advertising fund.
us-gaap_TreasuryStockCommonValue
Treasury stock, at cost, 5,289,515 shares at March 29, 2026 and March 30, 2025
us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Increases based on tax positions taken in current year
us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Remaining Authorized, Number of Shares
Treasury Stock, Common, Shares (in shares)
Balance (in shares)
Balance (in shares)
Treasury Stock, Common [Member]
us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Decreases of tax positions taken in prior years
Net income
Net income
Deferred Revenue [Domain]
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net income
Deferred Revenue Arrangement Type [Axis]
us-gaap_DeferredRentReceivablesNetNoncurrent
Deferred Rent Receivables, Net, Noncurrent
Amortization of debt issuance costs
us-gaap_AmortizationOfIntangibleAssets
Intangible Asset, Finite-Lived, Amortization Expense
us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
Total State and local income tax
COSTS AND EXPENSES
us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Total Federal income tax
us-gaap_OtherNoncashIncomeExpense
Operating lease assets and liabilities
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Deferred
us-gaap_CostsAndExpenses
Total costs and expenses
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
us-gaap_DeferredTaxAssetsGross
Total deferred tax assets
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense
Income Tax Disclosure [Text Block]
Restricted Stock [Member]
us-gaap_DeferredTaxAssetsDeferredIncome
Deferred revenue
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax asset
Income Tax, Policy [Policy Text Block]
Shares Expired or Forfeited up to 100000 Shares [Member]
Shares expired or forfeited up to 100000 shares [member]
Income tax provision at the U.S. Federal statutory rate
us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Other
us-gaap_DeferredTaxAssetsOther
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Merger costs
us-gaap_IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges
State and local income taxes, net of U.S. Federal income tax benefit
us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Accrued expenses
Change in uncertain tax positions, net
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Allowance for credit losses
Options exercisable (in shares)
Nondeductible executive compensation
us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
Deferred stock compensation
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Other adjustments
us-gaap_RepaymentsOfLongTermDebt
Repayment of Credit Facility
Open tax year
O 2026 Q1 Dividends [Member]
Represents ordinary dividends in Q1 2026.
License Royalties and Advertising Fund [Member]
Represents license royalties and advertising fund.
Merger costs
Carrying value as of the balance sheet date of obligations incurred through that date and payable for merger costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
Statement of Financial Position [Abstract]
Schedule of Income Taxes Paid [Table Text Block]
Tabular disclosure of income taxes paid.
O 2027 Q1 Dividends [Member]
Represents ordinary dividends in Q1 of 2027.
Income taxes
Total income taxes paid, net
O 2026 Q4 Dividends [Member]
Represents ordinary dividends in Q4 2026.
S 2026 Q3 Dividends [Member]
Represents special dividends in Q3 2026.
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
O 2026 Q2 Dividends [Member]
Represents ordinary dividends in Q2 2026.
O 2026 Q3 Dividends [Member]
Represents ordinary dividends in Q3 2026.
Operating lease right-of-use asset
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
us-gaap_RepaymentsOfSeniorDebt
Repayment of Senior Secured Notes
Amortization
nath_VoluntaryRepaymentsOfLongTermDebt
Voluntary Repayments of Long-Term Debt
The voluntary cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.
Other assets
dei_DocumentType
Document Type
us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Other liabilities
Document Information [Line Items]
us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Other assets
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
dei_DocumentAnnualReport
Document Annual Report
Weighted average remaining lease term (years): (Year)
Document Information [Table]
us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Year)
Deferred revenue
Foreign
us-gaap_IncomeTaxPaidForeignAfterRefundReceived
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
dei_DocumentTransitionReport
Document Transition Report
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted (in shares)
Weighted average diluted shares outstanding (in shares)
dei_DocumentFinStmtErrorCorrectionFlag
Document Financial Statement Error Correction [Flag]
Net income per share:
us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Effect of dilutive share-based awards (in shares)
Weighted average basic shares outstanding (in shares)
us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Basic (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term
us-gaap_EarningsPerShareBasic
Basic (in dollars per share)
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Effective Income Tax Rate Reconciliation [Table]
State and local
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
Title and Position [Domain]
Federal
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
Intangible asset, net
Income Tax Jurisdiction [Axis]
nath_BaseSalary
Base Salary
Amount of base salary.
dei_IcfrAuditorAttestationFlag
ICFR Auditor Attestation Flag
Shares issued in connection with share-based compensation plans (in shares)
nath_OperatingLeaseSettlementIncome
Operating Lease, Settlement Income
Amount of settlement income resulting from the termination of an operating lease.
Building and improvements
Document Fiscal Period Focus
Shares issued in connection with share-based compensation plans
Customer [Domain]
Document Fiscal Year Focus
Depreciation and amortization
Amendment Flag
Common Stock [Member]
us-gaap_SubleaseIncome
Less: Sublease income, net
Goodwill
Goodwill
dei_DocumentPeriodEndDate
Document Period End Date
Branded Product Customer A [Member]
Major customer A for branded product.
Branded Product Customer B [Member]
Major customer B for branded product.
Branded Product Customer C [Member]
Major customer C for branded product.
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
One Retail Licensee [Member]
Major retail licensee customer.
Primary Supplier of Hot Dogs [Member]
The company's primary supplier of hot dogs.
us-gaap_VariableLeaseCost
Variable lease cost
Granted, shares (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Legal Entity [Axis]
Distributor of Product to Company-owned Restaurants [Member]
The company's distributor of products supplying company owned restaurants.
nath_MaximumContributionsToAdvertisingFundPercentageOfNetSales
Maximum Contributions to Advertising Fund Percentage of Net Sales
Represents the maximum contributions to advertising fund as a percentage of net sales.
us-gaap_OperatingLeaseCost
Operating lease cost
Machinery, Equipment, Furniture, and Fixtures [Member]
The company's machinery, equipment, furniture and fixtures.
us-gaap_LeaseCost
Total net lease cost
Business Combination [Domain]
dei_EntityFileNumber
Entity File Number
Revenue, Remaining Performance Obligation, Amount
nath_PolicyTable
dei_EntityTaxIdentificationNumber
Entity Tax Identification Number
Business Combination [Axis]
Disaggregation of Revenue [Table Text Block]
Schedule of Property, Plant, and Equipment, Carrying Value [Table Text Block]
Tabular disclosure of the gross and net amount of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.
Entity [Domain]
Disaggregation of Revenue [Table]
Entity Central Index Key
dei_EntityRegistrantName
Entity Registrant Name
dei_EntityWellKnownSeasonedIssuer
Entity Well-known Seasoned Issuer
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
Business Combination [Table]
dei_EntityVoluntaryFilers
Entity Voluntary Filers
dei_EntityIncorporationStateCountryCode
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
dei_EntityPublicFloat
Entity Public Float
Leases, Cash Flows [Table Text Block]
The tabular disclosure for cash flows on leases.
Deferred franchise fees
Amount of obligation to transfer good or service to customer for which consideration is receivable. Excludes the amount of cash received.
Leases, Disclosure [Text Block]
The entire disclosure for leases of both the lessee and lessor.
dei_EntityFilerCategory
Entity Filer Category
dei_EntityShellCompany
Entity Shell Company
dei_EntityEmergingGrowthCompany
Entity Emerging Growth Company
dei_EntitySmallBusiness
Entity Small Business
Building and Building Improvements [Member]
Lessee, Operating Leases, Weighted Average Remaining Lease Term and Discount Rate [Table Text Block]
The tabular disclosure for weighted average remaining lease term and weighted-average discount rate for operating leases of the lessee.
Income from operations
Income from operations
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Operating Lease, Maturity [Table Text Block]
The tabular disclosure for maturity of operating lease both as lessee and lessor.
Sixth Stock Repurchase Plan [Member]
Represents the sixth stock repurchase plan.
Executive Chairman of the Board [Member]
Title of individual.
REVENUES
nath_TermOfConsultingPeriodPursuantToTheLorberEmploymentAgreement
Term of Consulting Period Pursuant to the Lorber Employment [Agreement]
Term of consulting period pursuant to the Lorber employment agreement.
Consulting Fee [Member]
Contractual obligation for consulting fee.
us-gaap_EffectiveIncomeTaxRateReconciliationFdiiPercent
Foreign derived intangible income, percent
nath_NumberOfTimesOfSalaryAndBonusLumpSumCashPayment
Number of Times of Salary and Bonus Lump Sum Cash Payment
Number of times of salary and bonus, lump sum cash payment.
dei_EntityAddressStateOrProvince
Entity Address, State or Province
dei_EntityAddressCityOrTown
Entity Address, City or Town
nath_DefinedContributionPlanEmployerMatchingContributionRatePerDollar
Defined Contribution Plan, Employer Matching Contribution Rate Per Dollar
Defined contribution plan, employer matching contribution rate per dollar.
us-gaap_InterestExpenseNonoperating
Interest expense
Retained earnings
dei_EntityAddressAddressLine1
Entity Address, Address Line One
us-gaap_StockholdersEquityBeforeTreasuryStock
Stockholders’ equity before treasury stock
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
dei_CityAreaCode
City Area Code
us-gaap_MultiemployerPlansWithdrawalObligation
Multiemployer Plans, Withdrawal Obligation
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Payments of withholding tax on net share settlement of share-based compensation plans
dei_LocalPhoneNumber
Local Phone Number
dei_EntityAddressPostalZipCode
Entity Address, Postal Zip Code
us-gaap_EffectiveIncomeTaxRateReconciliationFdiiAmount
Foreign derived intangible income
dei_Security12bTitle
Title of 12(b) Security
dei_SecurityExchangeName
Security Exchange Name
dei_TradingSymbol
Trading Symbol
Class of Stock [Axis]
Base Rate [Member]
2030, net leases
Amount of operating lease liability, net of sublease receivable, due in year four.
2029, net leases
Amount of operating lease liability, net of sublease receivable, due in year three.
Variable Rate [Axis]
2028, net leases
Amount of operating lease liability, net of sublease receivable, due in year two.
Variable Rate [Domain]
nath_LeaseOperatingLeaseLiabilityNetOfSubleaseReceivableTotal
Total lease commitments, net leases
Amount of operating lease liability, net of sublease receivable, due total.
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Earnings Per Share [Text Block]
Chief Financial Officer [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
us-gaap_OtherAssetsCurrent
Other
Chief Executive Officer [Member]
Accounts and other receivables, net (Note D)
Accounts and other receivables, net
Accrued rebates
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Weighted average shares used in computing net income per share:
Other general and administration expenses
Options exercisable, aggregate intrinsic value
Property, Plant, and Equipment [Table]
Common Stock, Par or Stated Value Per Share (in dollars per share)
Common Stock, Par or Stated Value Per Share
Other income, net
Long-Lived Asset, Class [Axis]
Receivable [Domain]
us-gaap_Assets
Total assets
Department expenses
Amount of travel expense, marketing and trade show expense and certain other overhead expense.
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Auditor Firm ID
dei_AuditorName
Auditor Name
us-gaap_CashEquivalentsAtCarryingValue
Cash Equivalents, at Carrying Value
Geographical [Domain]
dei_AuditorLocation
Auditor Location
Geographical [Axis]
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
us-gaap_EarningsPerShareDiluted
Diluted (in dollars per share)
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Deferred franchise fees
us-gaap_ContractWithCustomerLiabilityNoncurrent
Contract with Customer, Liability, Noncurrent
“Accrued expenses and other current liabilities”
Deferred revenues at beginning of period
Deferred revenues at end of period
Revenue from Contract with Customer [Policy Text Block]
Customer [Axis]
Schedule of Other Current Assets [Table Text Block]
Deferred franchise fees
us-gaap_ContractWithCustomerLiabilityCurrent
Contract with Customer, Liability, Current
Other Current Assets [Text Block]
Depreciation and amortization
us-gaap_DepreciationDepletionAndAmortization
us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Withholding tax on net share settlement of share-based compensation plans
Franchise [Member]
Accounts and Financing Receivables [Table]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Consolidation, Policy [Policy Text Block]
Interest and dividend income
Operating lease liability
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from operating lease liability.
License [Member]
Receivable Type [Axis]
Interest
Interim Period, Costs Not Allocable [Domain]
Inventories
nath_PerShareMergerConsiderationShares
Per Share Merger Consideration, Shares
The number of shares converted during a merger.
Merger With Smithfield and Boardwalk [Member]
Represents the merger with Smithfield Foods and Boardwalk Merger Sub.
Surviving Corporation [Member]
Represents the Surviving Corporation.
Boardwalk Merger Sub Inc [Member]
Represents Boardwalk Merger Sub Inc.
us-gaap_NumberOfStatesInWhichEntityOperates
Number of States in which Entity Operates
us-gaap_DeferredFinanceCostsNoncurrentGross
Debt Issuance Cost, Gross, Noncurrent
nath_PerShareMergerConsideration
Per Share Merger Consideration
The amount per share that owners of the company's stock will receive as part of the merger consideration.
Product Licensing [Member]
Represents Product Licensing, an operating segment of the company.
Restaurant Operations [Member]
Represents Restaurant Operations, an operating segment of the company.
us-gaap_StockholdersEquity
Total stockholders’ deficit
Balance
Balance
Deferred franchise fees
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
Branded Product Program [Member]
Represents Branded Product Program, an operating segment of the company.
nath_NumberOfRestaurantsClosed
Franchised restaurants closed during the period
The number of restaurants closed during the period.
nath_MergerCovenantLicensingAgreementTerminationFee
Merger, Covenant, Licensing Agreement, Termination Fee
The amount of cash termination required to be paid if certain covenants related to the licensing agreement are triggered.
nath_MergerCovenantTerminationFee
Merger, Covenant, Termination Fee
The termination fee in cash that the company would be required to pay if certain termination conditions are met.
Restaurant operating expenses
New franchised restaurants opened during the period
The number of new restaurants opened during the period.
nath_MergerRetentionBonus
Merger, Retention Bonus
The amount of retention bonus required to be paid if certain conditions are met.
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Award Timing Disclosures [Line Items]
Concentration Risk Benchmark [Axis]
Nature of Operation, Product Information, Concentration of Risk [Table]
Concentration Risk Benchmark [Domain]
Operating lease right-of-use assets, net (Note K)
Award Timing, How MNPI Considered [Text Block]
us-gaap_NumberOfCountriesInWhichEntityOperates
Number of Countries in which Entity Operates
Other liabilities
Franchised Units [Member]
Revenues
Revenues
Revenue
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Franchisor Disclosure [Axis]
Depreciation expense
Property, Plant, and Equipment [Table Text Block]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Franchisor Disclosure [Domain]
Schedule of Franchisor Disclosure [Table Text Block]
Franchisor, Ownership [Table]
Commitments and Contingencies
Inventory, Policy [Policy Text Block]