Document And Entity Information
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
Significant Accounting Policies
Note A - Organization and Summary of Significant Accounting Policies
Provision for income taxes
Total provision for income taxes
Provision for income taxes
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note B - Inventories
Pension Plan [Member]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note C - Property and Equipment
Trading Arrangements, by Individual [Table]
Note D - Leases
Retirement Benefits [Text Block]
Material Terms of Trading Arrangement [Text Block]
Note E - Other Comprehensive Income (Loss)
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Note F - Debt
Note G - Income Taxes
us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit
Recognized actuarial loss
Note H - Employee Benefit Plans
Note I - Stockholders' Equity
Minimum [Member]
Note J - Commitments
Note K - Economic Dependency
Foreign exchange loss
Foreign exchange loss
Statistical Measurement [Domain]
Insider Trading Policies and Procedures [Line Items]
Note N - Segment Information
Maximum [Member]
Note A - Organization and Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details)
Share Repurchase Program [Axis]
Note A - Organization and Summary of Significant Accounting Policies - Fair Value of Derivative Instruments Classified As Level 2 Assets and Liabilities (Details)
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Foreign
Note A - Organization and Summary of Significant Accounting Policies - Contract Liabilities and Revenue Recognized (Details)
Share Repurchase Program [Domain]
Note A - Organization and Summary of Significant Accounting Policies - Calculation of Basic and Diluted Net Income Per Common Share (Details)
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note B - Inventories - Summary of Inventories (Details)
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
United States
Retirement Plan Type [Domain]
Note C - Property and Equipment - Summary of Property and Equipment (Details)
us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Accounts payable and accrued liabilities
Note D - Leases - Lease Cash Flow Information (Details)
Note E - Other Comprehensive Income (Loss) - Schedule of Other Comprehensive Income (Loss) (Details)
Retirement Plan Type [Axis]
Note F - Debt - Future Debt Payments (Details)
Note G - Income Taxes - Geographical Breakdown of Income Before Income Taxes (Details)
Note G - Income Taxes - Provision for Income Taxes (Details)
Note G - Income Taxes - Net Deferred Tax Assets and Deferred Tax Liabilities (Details)
Amortization of net loss
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Note G - Income Taxes - Reconciliation of Income Tax Provision (Details)
Note G - Income Taxes - Schedule of Income Taxes Paid (Details)
Note H - Employee Benefit Plans - Defined Benefit Pension Plan's Funded Status and Amount Recognized (Details)
Note H - Employee Benefit Plans - Defined Benefit Pension Plan's Funded Status and Amount Recognized (Details) (Parentheticals)
Actual return on plan assets
Note H - Employee Benefit Plans - Components Included in Defined Benefit Plan's Net Periodic Benefit Expense (Details)
Credit Agreement [Member]
Name of the debt instrument with a lender.
Note H - Employee Benefit Plans - Components Included in Defined Benefit Plan's Net Periodic Benefit Expense (Details) (Parentheticals)
Note H - Employee Benefit Plans - Summary of Changes in Plan Assets and Benefit Obligation (Details)
Note H - Employee Benefit Plans - Summary of Changes in Plan Assets and Benefit Obligation (Details) (Parentheticals)
Note H - Employee Benefit Plans - Benefit Payments Expected to be Paid (Details)
Note H - Employee Benefit Plans - Weighted-average Rates Used In Determining Defined Benefit Pension Plan's Net Pension Costs (Details)
Counterparty Name [Axis]
Change in valuation allowance, net, percent
Note H - Employee Benefit Plans - Defined Benefit Plan's Weighted Average Asset Association and Weighted Average Target Allocation (Details)
Effective tax rate
Effective tax rate, percent
Note H - Employee Benefit Plans - Fair Values by Asset Category of Defined Benefit Pension Plan (Details)
Note I - Stockholders' Equity - Treasury Stock Repurchases (Details)
U.S statutory federal income tax rate, percent
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Note I - Stockholders' Equity - Restricted Stock (Details)
Foreign tax rate differential, percent
Note J - Commitments - Minimum Rental Commitments (Details)
Note K - Economic Dependency - Substantial Net Sales to Certain Customers (Details)
Note K - Economic Dependency - Substantial Net Purchase From Certain Suppliers (Details)
Note N - Segment Information - Operating Results by Business Segment (Details)
Employer contributions
Defined Benefit Plan, Plan Assets, Contributions by Employer
Note N - Segment Information - Net Sales by Geographic Region (Details)
us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities
Accrued compensation and employee benefits
Note N - Segment Information - Long-lived Assets by Geographical Region (Details)
Note N - Segment Information - Total Assets by Geographical Region (Details)
Note N - Segment Information - Capital Expenditures by Geographical Region (Details)
Notes To Financial Statements
Income Tax Jurisdiction [Domain]
Notes To Financial Statements [Abstract]
Profit-sharing Plan [Member]
Profit-sharing Plan.
Early Termination of Manno, Switzerland Apartment Lease [Member]
Represents the early termination of the Manno, Switzerland apartment lease.
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Interest cost
Land [Member]
Difference between benefit obligation and fair value of plan assets
Discretionary Profit-sharing Plan [Member]
Discretionary Profit-sharing Plan.
us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Fair value by asset category
Fair value of plan assets at beginning of year
Fair value of plan assets at end of year
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Mid-cap Funds [Member]
Mid-cap Funds.
Small Cap Funds [Member]
Small Cap Funds.
us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Expected return on plan assets
Other income (expense):
State income taxes, net of federal income tax expense, percent
Leasehold Improvements [Member]
us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Net periodic benefit expense
us-gaap_EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent
Counterparty Name [Domain]
us-gaap_IncreaseDecreaseInInventories
Inventories
Other, percent
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Tax credits, percent
Settlement loss
Segment Reporting [Text Block]
us-gaap_DefinedBenefitPlanBenefitObligation
Benefit obligation at beginning of year
Benefit obligation at end of year
Award Type [Axis]
Segment Reporting [Table Text Block]
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Preferred stock; $.01 par value; 500,000 shares authorized; none issued or outstanding
Non-cash lease expenses
Amount of operating lease non-cash expense. Excludes sublease income.
us-gaap_Liabilities
Total liabilities
Plan Name [Axis]
Plan Name [Domain]
Income Tax Jurisdiction, Domestic Federal, State, and Local [Member]
Litigation Status [Axis]
Litigation Status [Domain]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Consolidation Items [Axis]
Products Manufactured by NAIE [Member]
Represents products manufactured by NAIE.
Cash and Cash Equivalent [Table]
naii_PolicyTable
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaids and other assets
Stock-based compensation
Stock-based compensation
Assets Held For Sale [Policy Text Block]
Describes the company's policy regarding assets held for sale.
naii_DeferredTaxLiabilitiesWithholdingTaxes
Withholding taxes
Amount of deferred tax liability attributable to taxable temporary differences from withholding taxes.
Consolidation Items [Domain]
Going Concern [Policy Text Block]
Describes the company's policy for going concern.
UBS Switzerland AG [Member]
Relating to UBS Switzerland AG.
Wells Fargo Bank, N.A. [Member]
Represents Wells Fargo Bank, N.A, the lender.
Future Debt Payments. thereafter
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing 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).
Total recognized in net periodic benefit cost and other comprehensive (loss) income
Unrealized loss resulting from change in fair value of derivative instruments, net of tax
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax
Lessee, Lease, Description [Table]
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Changes in operating assets and liabilities:
Preferred stock, shares issued (in shares)
Schedule of Income Taxes Paid [Table Text Block]
Disclosure of information about income tax paid by jurisdiction.
Europe [Member]
Preferred stock, shares outstanding (in shares)
Developed and Emerging Markets [Member]
Relating to developed and emerging markets.
naii_DeferredTaxLiabilitiesAssetsHeldForSale
Assets held for sale
Amount of deferred tax liability attributable to taxable temporary differences from assets held for sale.
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Preferred stock, shares authorized (in shares)
Permanent differences, percent
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 applicable to permanent differences.
Fair Value, by Balance Sheet Grouping [Table]
Preferred stock par value (in dollars per share)
Unrealized gain (loss) resulting from change in fair value of derivative instruments, net of tax
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent
Restricted cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net (decrease) increase in cash, cash equivalents and restricted cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash, cash equivalents and restricted cash
naii_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOciIntoInterestIncomeEffectivePortionNet
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Interest Income, Effective Portion, Net
Represents the effective portion of net gain (loss) reclassified from accumulated other comprehensive income into interest income on derivative instruments designated and qualifying as hedging instruments.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, cash equivalents and restricted cash at beginning of year
Cash, cash equivalents and restricted cash at end of year
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Statement [Table]
Reclassification, Comparability Adjustment [Policy Text Block]
Line of credit – current
Cash paid for amounts included in the measurement of operating lease liabilities
Forward contracts
us-gaap_IncreaseDecreaseInDerivativeLiabilities
us-gaap_LineOfCreditFacilityCommitmentFeeAmount
Line of Credit Facility, Commitment Fee Amount
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Deferred tax assets, fixed assets
Inventory reserves
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory reserves.
Swiss Federal Tax Administration (FTA) [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Line of Credit Facility, Lender [Domain]
Equity Securities [Member]
us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Line of Credit Facility, Interest Rate During Period
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Nonvested, Shares (in shares)
Nonvested, Shares (in shares)
Lender Name [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Nonvested, weighted-average grant date fair value (in dollars per share)
Nonvested, weighted average grant date fair value (in dollars per share)
us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Line of Credit Facility, Remaining Borrowing Capacity
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Granted, Shares (in shares)
Granted, weighted-average grant date fair value (in dollars per share)
Granted, weighted-average grant date fair value (in dollars per share)
Long-Term Debt, Type [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited, Shares (in shares)
Product and Service [Domain]
Product and Service [Axis]
us-gaap_LineOfCredit
Long-Term Line of Credit
Settlement of legal proceeding and associated expense
Settlement of legal proceeding and associated expense
Legal Fees
Depreciable Life In Years (Year)
Property, Plant and Equipment, Useful Life (Year)
Consolidated Entities [Axis]
Line of Credit [Member]
Consolidated Entities [Domain]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block]
Contract Liabilities (Customer Deposits), addition
Amount of addition obligation to transfer good or service to customer for which consideration has been received or is receivable.
Vested, weighted-average grant date fair value (in dollars per share)
Vested, weighted-average grant date fair value (in dollars per share)
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested, Shares (in shares)
There-after
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Operating Lease, Weighted Average Discount Rate, Percent
2025
2029
Available for grant, Shares (in shares)
naii_DeferredCompensationArrangementWithIndividualCashAwardForfeitedAmount
Deferred Compensation Arrangement with Individual, Cash Award Forfeited, Amount
Amount of commitment forfeited in accordance with deferred compensation arrangement.
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
Schedule of Maturities of Long-Term Debt [Table Text Block]
Commodities Investment [Member]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
2027
2026
Statement [Line Items]
us-gaap_FairValueNetAssetLiability
Fair Value, Net Asset (Liability)
Fair Value Net Asset – all Derivative Contracts
Fair Value Hierarchy and NAV [Axis]
2028
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)
Award Type [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
naii_StockRepurchaseProgramAdditionalAuthorizedAmount
Stock Repurchase Program, Additional Authorized Amount
Additional amount of stock repurchase plan authorized.
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]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Defined Contribution Plan [Table]
Common stock; $.01 par value; 20,000,000 shares authorized at June 30, 2026 and June 30, 2025, issued and outstanding (net of treasury shares) 6,266,542 at June 30, 2026 and 6,178,213 at June 30, 2025
Fair Value of Financial Instruments, Policy [Policy Text Block]
naii_DeferredTaxLiabilitiesRefundFromEmployeeRetentionTaxCredit
Employee retention tax credit refund
Amount of deferred tax liability attributable to taxable temporary differences from refunds for the employee retention tax credit.
Schedule of Inventory, Current [Table Text Block]
Supplier [Axis]
Tax Period [Domain]
Supplier [Domain]
naii_DeferredIncomeTaxExpenseValuationAllowance
Valuation allowance
The valuation allowance attributed to deferred income tax expense.
Tax Period [Axis]
Schedule of Cash and Cash Equivalents [Table Text Block]
Accounts payable
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Current:
Deferred:
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Comprehensive Income (Loss) Note [Text Block]
Borrowings under line of credit
Corporate, Foreign, or Emerging Market Funds [Member]
Represents information pertaining to corporate, foreign, or emerging market funds.
Legal Matters and Contingencies [Text Block]
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive loss
Net decrease in operating lease liabilities and right-of-use assets due to lease remeasurements
Increase (Decrease) in Operating Lease Right-of-Assets And Liabilities, Net
Represents increase (decrease) in net operating lease right-of-assets and liabilities.
Concentration Risk [Table]
Subsequent Events [Text Block]
us-gaap_SegmentExpenditureAdditionToLongLivedAssets
Capital Expenditures
Concentration Risk Type [Axis]
Accrued liabilities
Borrowings under long-term debt
Concentration Risk Disclosure [Text Block]
Accrued compensation and employee benefits
Long-term liability – operating leases
Total
Short-term liability – operating leases
us-gaap_OperatingLeaseLiabilityCurrent
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
2029
Reconciliation of Funded Status:
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
2030
Accounts Receivable [Member]
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
2027
us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup
Asset, Held-for-Sale, Not Part of Disposal Group
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
2028
Assets held for sale
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
Lease liability
Amount, before allocation of valuation allowance, of deferred tax asset attributable to lease liability.
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Concentration Risk Type [Domain]
SWITZERLAND
Future Debt Payments, 2028
Future Debt Payments, 2029
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
2031
Future Debt Payments, 2027
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
2032-2036
Income Tax Jurisdiction, Domestic Federal [Member]
Income Tax Jurisdiction, Domestic State and Local [Member]
Future Debt Payments
Long-Term Debt
Stock Repurchase Plan [Member]
Represents information related to stock repurchase plan.
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Discount rate
Statement of Stockholders' Equity [Abstract]
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Expected long-term rate of return
Loss Contingency Nature [Axis]
Extension on Manufacturing Facilities Lease [Member]
Represents extension on manufacturing facilities lease.
Statement of Cash Flows [Abstract]
us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Weighted-average asset allocation
Tax Year 2021 [Member]
us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Net current period OCI
Long-Term Debt, Type [Domain]
Product Concentration Risk [Member]
Stockholders’ equity:
Equity Components [Axis]
us-gaap_IncreaseDecreaseInOperatingLeaseLiability
Operating lease liabilities
Share-Based Payment Arrangement [Policy Text Block]
Defined Benefit Plan, Plan Assets, Category [Axis]
Equity Component [Domain]
Defined Benefit Plan, Plan Assets, Category [Domain]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Fair Value, Inputs, Level 1 [Member]
Equity [Text Block]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Cost of goods sold
Cost of goods sold
Loss Contingency, Nature [Domain]
naii_NumberOfMajorCustomers
Number of Major Customers
Represents the number of major customers.
Property and equipment, net
Property and equipment, net
Property and equipment, gross
Non-cash purchases of property and equipment
Long-term pension liability
Subsequent Event [Table]
Property, Plant, and Equipment [Policy Text Block]
Machinery and Equipment [Member]
naii_HealthInsurancePlanPremiumExpense
Health Insurance Plan Premium Expense
The expense in the period incurred with respect to providing health care benefits to employees.
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Cost of Goods and Service [Policy Text Block]
naii_DefinedBenefitPlanEquitySecuritiesByTypePercentage
Defined Benefit Plan Equity Securities by Type, Percentage
Percentage of equity securities by type of publicly traded funds.
Defined Benefit Plan, Assumptions [Table Text Block]
Schedule of Allocation of Plan Assets [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
First Contributions [Member]
Contributions on first 3% of participant's compensation that the Company must match.
Compensation expense related to stock compensation plans
us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
Large-cap Funds [Member]
Information by large-cap funds.
Schedule of Expected Benefit Payments [Table Text Block]
Change in Benefit Obligation:
Change in Plan Assets:
Shipping and Handling Costs [Policy Text Block]
The accounting policy for shipping and handling costs.
Permanent differences
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.
us-gaap_GainLossFromComponentsExcludedFromAssessmentOfCashFlowHedgeEffectivenessNet
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net
us-gaap_GainLossOnDispositionOfAssets
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property
Fair Value, by Balance Sheet Grouping [Table Text Block]
us-gaap_AccountsReceivableNet
Accounts Receivable, after Allowance for Credit Loss
Current liabilities:
us-gaap_CurrentIncomeTaxExpenseBenefit
Total Current
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Supplier Concentration Risk [Member]
Secured Overnight Financing Rate (SOFR) [Member]
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Accounts receivable – less allowance for credit losses of $1 at June 30, 2026 and $0 at June 30, 2025
Term Loan [Member]
Represents a term loan.
Customer Concentration Risk [Member]
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
Fair value of plan assets
Numerator
Accumulated benefit obligation
Income taxes
Lease, Cost [Table Text Block]
us-gaap_GainLossOnDispositionOfAssets1
Loss on disposal of assets
The 2020 Omnibus Stock Incentive Plan [Member]
Omnibus stock incentive plan
naii_DefinedBenefitPlanExpectedFutureBenefitPayment
Total benefit payments expected to be paid
Total amount of benefits expected to be paid through the tenth fiscal year following the latest fiscal year from a defined benefit plan.
Revenue Benchmark [Member]
Schedule of Weighted Average Allocation of Assets Related to Defined Benefit Plans Disclosure [Table Text Block]
Tabular disclosure of the weighted-average asset allocation related to defined benefit plans.
naii_OperatingLeaseFacilityArea
Operating Lease Facility Area (Square Foot)
Area of leased facility in square feet.
Other Commitments [Table]
naii_AccumulatedOtherComprehensiveIncomeLossCumulativeCashFlowHedgesGainLoss
Accumulated Other Comprehensive Income (Loss) Cumulative Cash Flow Hedges, Gain (Loss)
Accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges recorded to Accumulated Other Comprehensive Income Loss.
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: accumulated depreciation and amortization
California 1 [Member]
Geographic location.
Accumulated other comprehensive income (loss)
Projected benefit obligation
Stock Repurchased from Employee for Restricted Stock Vesting [Member]
Represents stock repurchased from employee for restricted stock vesting.
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before income taxes
(Loss) income before income taxes
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Sofinol SA [Member]
Represents Sofinal SA.
Net amount recognized
Amount of defined benefit plan recognized on balance sheet including accumulated other comprehensive income portion.
Additional paid-in capital
us-gaap_DividendsAndInterestPaid
Dividends and Interest Paid
us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Debt Disclosure [Text Block]
naii_SalesRoyaltyAndLicensingRevenue
Sales, Royalty and Licensing Revenue
The amount of sales, royalty, and licensing revenue.
Use of Estimates, Policy [Policy Text Block]
Prepaids and other current assets
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
Issuance of common stock for restricted stock grants
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property and equipment
Lessee, Operating Leases [Text Block]
us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Line of Credit Facility, Commitment Fee Percentage
UNITED STATES
us-gaap_DebtInstrumentFairValue
Debt Instrument, Fair Value Disclosure
Non-US [Member]
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Current assets:
Money Market Funds [Member]
us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures
Forfeiture of restricted stock
us-gaap_AssetsCurrent
Total current assets
us-gaap_GrossProfit
Gross profit
Gross profit
us-gaap_LitigationSettlementAmountAwardedToOtherParty
Litigation Settlement, Amount Awarded to Other Party
Debt Instrument, Name [Domain]
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
us-gaap_GainLossOnSaleOfDerivatives
Gain (Loss) on Sale of Derivatives
Forfeiture of restricted stock (in shares)
us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Target allocation
us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent
Amounts reclassified from OCI
us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization, Disposition
us-gaap_Depreciation
Depreciation
Issuance of common stock for restricted stock grants (in shares)
OCI before reclassifications
Two Largest Customers [Member]
Represents information related to two largest customers.
Treasury Stock Acquired, Shares (in shares)
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Cash flows from operating activities
Cash flows from investing activities
Debt Securities [Member]
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash (used in) provided by operating activities
Cash flows from financing activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by (used in) financing activities
Treasury Stock Acquired, Average Cost (in dollars per share)
Advertising Cost [Policy Text Block]
Natural Alternatives International Europe SA [Member]
The entity Natural alternatives international Europe SA.
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
naii_NumberOfYearsCompensationUsedForBenefitObligationAssumptions
Number of Years Compensation Used for Benefit Obligation Assumptions (Year)
The period of employment before retirement that is used to determine what amount of compensation to use as a a baseline for the companies defined benefit plan.
us-gaap_AdvertisingExpense
Advertising Expense
Euro Forward Contract [Member]
Represents Euro Forward Contract.
Operating Segments [Member]
Swiss Franc Forward Contract [Member]
Represents Swiss Franc Forward Contract.
Accounting Policies [Abstract]
Customer 1 [Member]
Customer 1 in a set of customers.
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Customer 2 [Member]
Customer 2 in a set of customers.
Segments [Domain]
Customer 3 [Member]
Customer 3 in a set of customers.
Unrecognized net actuarial loss in accumulated other comprehensive income
Raw Material Purchases [Member]
Aggregate raw material purchases during the period from major suppliers.
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table]
Accounts receivable, allowance for doubtful accounts
Accumulated Gain (Loss), Net, Swap Derivative, Parent [Member]
Related to accumulated gain or loss of swap derivative, attributable to parent.
us-gaap_NoncurrentAssets
Long-Lived Assets
Accounts Receivable [Policy Text Block]
Segments [Axis]
Foreign
Income Statement [Abstract]
Federal
us-gaap_DeferredIncomeTaxLiabilities
Deferred tax liabilities
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
us-gaap_DeferredIncomeTaxExpenseBenefit
Total deferred
us-gaap_IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear
Income Tax Examination, Increase (Decrease) in Liability from Prior Year
Beta-alanine Raw Material [Member]
Information pertaining to beta-alanine raw material.
us-gaap_TreasuryStockCommonValue
Treasury stock, at cost, 3,385,364 shares at June 30, 2026 and 3,326,693 at June 30, 2025
Three Customers [Member]
Information pertaining to three customers.
Treasury stock, shares (in shares)
Balance (in shares)
Balance (in shares)
Private Label Contract Manufacturing [Member]
Business segment related to private label contract manufacturing.
Patent and Trademark Licensing [Member]
Business segment related to patentand trademark licensing.
Treasury Stock, Common [Member]
Capital Expenditures by Geographic Areas [Table Text Block]
Tabular disclosure for capital expenditures by geographic areas.
Assets by Geographic Areas [Table Text Block]
Tabular disclosure of total assets by geographic areas.
us-gaap_NetIncomeLoss
Net loss
Net loss
naii_ContractWithCustomerLiabilityCustomerRefunds
Contract Liabilities (Customer Deposits), customer refunds
Amount of customer refunds 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_IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority
Supplier 1 [Member]
Supplier 1 in a set of suppliers.
Raw Material Purchases by Supplier
naii_RawMaterialPurchasesBySupplier
Raw material purchases by supplier
% of Total Raw Material Purchases
naii_PercentageOfRawMaterialsPurchasedFromSupplier
Percentage of raw materials purchased from supplier
us-gaap_AreaOfRealEstateProperty
Area of Real Estate Property (Acre)
us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations
Foreign Income Tax Expense (Benefit), Continuing Operations
us-gaap_ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months
Interest expense
Interest expense
Deferred tax assets:
State
Accumulated Other Comprehensive Income (Loss) [Table]
us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax
Net (loss) income
us-gaap_DeferredTaxAssetsInventory
Inventory capitalization
us-gaap_DeferredTaxAssetsGross
Deferred Tax Assets, Gross
Total gross deferred tax assets
us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount
Income Tax Disclosure [Text Block]
us-gaap_DeferredTaxAssetsDerivativeInstruments
Deferred Tax Assets, Derivative Instruments
Restricted Stock [Member]
Net operating loss carry forward
Accounting Standards Update and Change in Accounting Principle [Table]
Legacy Corporate Lending, LLC [Member]
Represents Legacy Corporate Lending, LLC.
us-gaap_IncomeTaxReceivable
Income Taxes Receivable
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax assets
us-gaap_DeferredTaxAssetsNet
Deferred Tax Assets, Net of Valuation Allowance
Loan and Security Agreement [Member]
Represents Loan and Security Agreement.
Income Tax, Policy [Policy Text Block]
Foreign tax rate differential
U.S statutory federal income tax rate
Impairment loss
Asset, Impairment Loss
Tax credit carry forward
us-gaap_DeferredTaxAssetsOther
Other, net
Treasury Stock Acquired, Total Cost
Repurchase of common stock
Pension liability
Accrued compensation
State income taxes, net of federal income tax expense
New Apartment in Lugano, Switzerland [Member]
Represents the new apartment lease in Lugano, Switzerland.
Return to provision - differences
us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Stock-based compensation
Other
Class of Treasury Stock [Table Text Block]
Fair Value Hierarchy and NAV [Domain]
Accrued settlement of legal proceeding
us-gaap_IncomeTaxReconciliationTaxCredits
Tax credits
Deferred tax liabilities:
us-gaap_RepaymentsOfLongTermDebt
Repayments of Long-Term Debt
Repayments under long-term debt
us-gaap_RepaymentsOfLinesOfCredit
Repayments of Lines of Credit
Repayments under line of credit
Statement of Financial Position [Abstract]
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Valuation allowance
us-gaap_NonoperatingIncomeExpense
Total other expense
Total other expense
Class of Treasury Stock [Table]
us-gaap_IncomeTaxesPaidNet
Total cash paid during the year for income taxes, net of refunds
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
Lease assets
us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1
Settlement loss
Supplemental disclosures of cash flow information
Vehicles [Member]
us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year)
us-gaap_DeferredTaxLiabilitiesOther
Other, net
Reimbursements For Tenant Improvements [Member]
Represents reimbursements for tenant improvements to the buildings.
Other noncurrent assets, net
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of common stock
naii_OperatingLeaseBaseRentPerSquareFoot
Operating Lease, Base Rent Per Square Foot
Represents the increase in base rent per square foot.
Document Type
Document Information [Line Items]
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract (Month)
Document Annual Report
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term (Year)
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Operating Lease, Weighted Average Remaining Lease Term (Year)
Document Information [Table]
Actuarial (loss) gain
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
us-gaap_IncomeTaxPaidForeignAfterRefundReceived
Foreign
Entity Interactive Data Current
Document Transition Report
Diluted (in shares)
Diluted weighted average common shares outstanding (in shares)
Document Financial Statement Error Correction [Flag]
Net loss per common share:
us-gaap_ProceedsFromIncomeTaxRefundFederal
Proceeds from Income Tax Refund, Federal
Dilutive effect of stock options and restricted stock shares (in shares)
Basic (in shares)
Basic weighted average common shares outstanding (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Year)
Derivative Instrument [Axis]
Stock based compensation
Basic (in dollars per share)
Basic net loss per common share (in dollars per share)
Research and Development Expense, Policy [Policy Text Block]
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Accrued contingent fee
Represents the amount of deferred tax assets attributable to accrued contingent fees.
Capitalized research and experimentation
Represents the amount of deferred tax assets attributable to capitalized research and development.
Mortgage note payable, current portion
Effective Income Tax Rate Reconciliation [Table]
Mortgage note payable, net of current portion
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
State
Pension and Other Postretirement Plans, Policy [Policy Text Block]
us-gaap_TaxJurisdictionOfDomicileExtensibleEnumeration
Tax Jurisdiction of Domicile [Extensible Enumeration]
Earnings Per Share, Policy [Policy Text Block]
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
U.S. Federal
Office Equipment [Member]
Income Tax Jurisdiction [Axis]
Income Tax Paid, by Individual Jurisdiction [Table]
ICFR Auditor Attestation Flag
Document Fiscal Period Focus
Customer [Domain]
Document Fiscal Year Focus
Commitments Disclosure [Text Block]
Amendment Flag
Common Stock [Member]
Document Period End Date
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
us-gaap_DerivativeFairValueOfDerivativeNet
Derivative, Fair Value, Net
Entity File Number
Entity Tax Identification Number
Entity [Domain]
Disaggregation of Revenue [Table]
Entity Central Index Key
Entity Registrant Name
Entity Well-known Seasoned Issuer
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Entity Current Reporting Status
us-gaap_DerivativeGainLossOnDerivativeNet
Derivative, Gain (Loss) on Derivative, Net
Entity Voluntary Filers
Entity Incorporation, State or Country Code
Total recognized in other comprehensive loss
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Change in minimum pension liability, net of tax
Current Fiscal Year End Date
Entity Public Float
us-gaap_ResearchAndDevelopmentExpense
Research and Development Expense
us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
Tax effect of OCI activity
Entity Filer Category
us-gaap_PropertyPlantAndEquipmentDisposals
Property, Plant, and Equipment, before Accumulated Depreciation, Disposition
Entity Shell Company
Entity Emerging Growth Company
Entity Small Business
us-gaap_DerivativeNumberOfInstrumentsHeld
Derivative, Number of Instruments Held
Building and Building Improvements [Member]
us-gaap_OperatingIncomeLoss
Loss from operations
(Loss) income from operations
Investments [Domain]
Hedging Designation [Domain]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Derivative assets, current asset
Forward contracts
Vista, California Manufacturing Facility [Member]
Represents the manufacturing facility in Vista, California.
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Global intangible low-taxed income (GILTI), percent
Entity Address, State or Province
Inventory, Current [Table]
Entity Address, City or Town
us-gaap_DeferredTaxLiabilitiesDerivatives
Forward contracts
us-gaap_DerivativeLiabilitiesCurrent
Forward contracts
Derivative liabilities, current liability
Retained earnings
Entity Address, Address Line One
City Area Code
Local Phone Number
Entity Address, Postal Zip Code
us-gaap_ContractWithCustomerRefundLiability
Contract with Customer, Refund Liability
Derivative [Table]
naii_ContractWithCustomerLiabilityRevenueRecognizedDuringPeriod
Contract Liabilities (Customer Deposits), revenue recognized
Amount of revenue recognized during period including amounts previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.)
Global intangible low-taxed income (GILTI)
Title of 12(b) Security
Security Exchange Name
Trading Symbol
Derivatives, Policy [Policy Text Block]
Class of Stock [Axis]
Commodity Contract [Member]
Variable Rate [Domain]
Other Contract [Member]
Revenue [Policy Text Block]
Foreign Exchange Contract [Member]
Entity Common Stock, Shares Outstanding
Cash Flow Hedging [Member]
Hedging Designation [Axis]
Deferred income taxes
us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid
Benefits paid
us-gaap_RoyaltyExpense
Royalty Expense
us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid
Benefits paid
Weighted average common shares outstanding:
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Denominator
Property, Plant, and Equipment [Table]
us-gaap_IncreaseDecreaseInIncomeTaxes
Income taxes
us-gaap_TenantImprovements
Tenant Improvements
Common stock, par value (in dollars per share)
Hedging Relationship [Axis]
Derivative Contract [Domain]
Other, net
Other, net
Long-Lived Asset, Class [Axis]
Receivable [Domain]
us-gaap_Assets
Total Assets
Total assets
Cash and Cash Equivalents, Policy [Policy Text Block]
Designated as Hedging Instrument [Member]
Cash and cash equivalents
Auditor Firm ID
Cash Equivalents [Member]
Auditor Name
naii_FederalStateAndLocalIncomeTaxExpenseBenefitGrossContinuingOperations
Federal, State and Local Income Tax Expense (Benefit), Gross, Continuing Operations
Amount before valuation allowance of current and deferred federal, state and local income tax expense (benefit) attributable to income (loss) from continuing operations.
Geographical [Domain]
Auditor Location
Geographical [Axis]
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
Diluted (in dollars per share)
Diluted net loss per common share (in dollars per share)
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Other selling, general and administrative expenses
Other selling, general and administrative expenses
Customer [Axis]
Customer deposits
Contract Liabilities (Customer Deposits), balance
Contract Liabilities (Customer Deposits), balance
Depreciation and amortization
Depreciation and amortization
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]
Investment Type [Axis]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Consolidation, Policy [Policy Text Block]
Receivable Type [Axis]
Interest income
Interest income
Interest
Inventory Disclosure [Text Block]
Settled Litigation [Member]
Finished goods
Inventories, net
Inventory, Net
Raw materials
Hedging Relationship [Domain]
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
Forfeited, weighted average grant date fair value (in dollars per share)
Forfeited, weighted-average grant date fair value (in dollars per share)
naii_WithholdingTaxPercentage
Withholding Tax Percentage
Represents the withholding tax percentage
Work in progress
Refundable Tax Credits Claim, ERTC [Member]
A claim for refundable tax credits.
Employee Retention Tax Credit ("ERTC") Refund [Member]
Information by type of receivable.
Award Timing MNPI Disclosure [Text Block]
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Stock, Class of Stock [Table]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
us-gaap_InventoryValuationReserves
Reserves
Fixed Income Funds [Member]
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Pension expense, net of contributions
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Deferred tax liabilities, fixed assets
Net sales
Revenue from Contract with Customer, Including Assessed Tax
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Inventory, Policy [Policy Text Block]
Commitments and contingencies (Notes D, F, H, J and M)
Change in valuation allowance, net