Document And Entity Information
Marketable Securities, Policy [Policy Text Block]
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 1 - Summary of Accounting Policies
Continuing operations
Provision for income taxes, amount
Provision for income taxes
Note 2 - Acquisitions
Note 3 - Revenue From Contracts With Customers
Transferred at Point in Time [Member]
Note 4 - Inventories
Note 5 - Property, Plant and Equipment
Note 6 - Goodwill
Note 7 - Intangible Assets
Note 8 - Debt
Note 9 - Accrued Liabilities
Note 10 - Derivative Financial Instruments
Note 11 - Income Taxes
Note 13 - Stock-based Compensation and Purchase Plans
Note 14 - Accumulated Other Comprehensive Income (Loss)
Note 15 - Restructuring
Note 16 - Employee Benefit Plans
Note 17 - Industry Segment Information
Retirement Plan Name [Domain]
us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year
Note 18 - Divestitures
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivables, net
Retirement Plan Type [Domain]
Note 19 - Discontinued Operations
Note 20 - Leases
Contributions
us-gaap_MultiemployerPlanEmployerContributionCost
Retirement Plan Name [Axis]
Note 1 - Summary of Accounting Policies - Changes in Allowances for Uncollectible Accounts (Details)
Retirement Plan Type [Axis]
Note 1 - Summary of Accounting Policies - Useful Lives of Property, Plant and Equipment (Details)
Note 1 - Summary of Accounting Policies - Useful Lives of Intangible Assets (Details)
Withholding Taxes, 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 attributable to income exempt from income tax because of foreign withholding taxes.
Local taxes at a rate different than the statutory rate, 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 attributable to income exempt from income tax because of foreign state and local taxes
Note 1 - Summary of Accounting Policies - Fair Values of Financial Instruments (Details)
Note 1 - Summary of Accounting Policies - Changes in Warranty Reserve (Details)
Other Tax Jurisdictions [Member]
Related to other tax jurisdictions.
Note 1 - Summary of Accounting Policies - Weighted Average Number of Shares (Details)
Other, foreign, 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 statutory income tax expense (benefit) outside of the country of domicile not specifically disclosed.
Note 2 - Acquisitions - Components of Fair Value of Acquisitions and Allocation of Purchase Price For Acquisition of McStarlite (Details)
Procon Pumps Business [Member]
Relating to Procon pumps business.
Note 2 - Acquisitions - Components of Fair Value of Acquisitions and Allocation of Purchase Price For Acquisition of Amran-Narayan Group (Details)
Note 2 - Acquisitions - Schedule of Pro Forma Information (Details)
Note 2 - Acquisitions - Undiscounted Cash Flows Expected to Be Paid for Operating Leases With Related Parties (Details)
Note 3 - Revenue From Contracts With Customers - Revenue Disaggregated (Details)
Note 3 - Revenue From Contracts With Customers - Contract Assets and Liabilities (Details)
Note 4 - Inventories - Summary of Inventories (Details)
Other, foreign, amount
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 other foreign income tax expense (benefit) not specifically disclosed.
Note 5 - Property, Plant and Equipment - Summary of Property, Plant and Equipment (Details)
Note 6 - Goodwill - Changes to Goodwill (Details)
Local taxes at a rate different than the statutory rate, amount
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 foreign state and local income tax expense (benefit).
Note 7 - Intangible Assets - Summary of Intangible Assets (Details)
Note 7 - Intangible Assets - Future Amortization Expense (Details)
Note 8 - Debt - Long-term Debt (Details)
Withholding Taxes, amount
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 income exempt from income tax because of foreign withholding taxes.
Note 9 - Accrued Liabilities - Accrued Expenses (Details)
Note 9 - Accrued Liabilities - Accrued Expenses (Details) (Parentheticals)
Note 10 - Derivative Financial Instruments - Fair Value of Swaps Recognized in Accrued Liabilities and in Other Comprehensive Income (Details)
Note 10 - Derivative Financial Instruments - Foreign Currency Exchange Contracts (Details)
Note 10 - Derivative Financial Instruments - Balance Sheet Classification (Details)
Note 10 - Derivative Financial Instruments - Gain (Loss) Recognized in Comprehensive Income on Derivative Financial Instruments (Details)
Note 10 - Derivative Financial Instruments - Details About Accumulated Other Comprehensive Income (Loss) Components (Details)
sxi_EffectiveIncomeTaxRateReconciliationSharebasedPaymentArrangementPercent
Share-based compensation
Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.
Note 11 - Income Taxes - Income (Loss) From Continuing Operations Before Income Taxes (Details)
Note 11 - Income Taxes - Components of Provision for Income Taxes (Details)
Note 11 - Income Taxes - Schedule of Income Taxes Paid (Details)
Note 11 - Income Taxes - Reconciliation of Effective Tax Rate (Details)
Note 11 - Income Taxes - Reconciliation of Effective Tax Rate (Details) (Parentheticals)
Note 11 - Income Taxes - Deferred Income Taxes (Details)
Note 11 - Income Taxes - Provision for Income Taxes (Details)
Note 11 - Income Taxes - Unrecognized Tax Benefits (Details)
Note 11 - Income Taxes - Open Income Tax Years (Details)
Note 13 - Stock-based Compensation and Purchase Plans - Summary of Restricted Stock Awards Activity (Details)
Note 13 - Stock-based Compensation and Purchase Plans - Assumptions Used to Estimate Fair Values (Details)
Income taxes payable
us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
Note 13 - Stock-based Compensation and Purchase Plans - Summary of Awards Activity Under the Executive Compensation Program (Details)
Note 14 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details)
Note 15 - Restructuring - Summary of Severance, Restructuring, and Related Charges by Initiative (Details)
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Note 15 - Restructuring - Summary of Activity in Reserves Related to Restructuring Initiatives (Details)
Note 15 - Restructuring - Summary of Restructuring Expenses by Segment (Details)
us-gaap_LesseeOperatingLeaseRemainingLeaseTerm
Lessee, Operating Lease, Remaining Lease Term (Year)
Note 16 - Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details)
Note 16 - Employee Benefit Plans - Funded Status for US and Foreign Pension Plan (Details)
Note 16 - Employee Benefit Plans - Fair Values of Pension Plans (Details)
Note 16 - Employee Benefit Plans - Asset Allocation (Details)
Note 16 - Employee Benefit Plans - Target Asset Allocations (Details)
Note 16 - Employee Benefit Plans - Plan Asset Assumptions (Details)
us-gaap_IncreaseDecreaseInInventories
Inventories
Note 16 - Employee Benefit Plans - Company's Participation in Multiemployer Pension Plans (Details)
Note 17 - Industry Segment Information - Net Sales and Income (Loss) by Industry Segments (Details)
Note 17 - Industry Segment Information - Assets (Details)
Note 18 - Divestitures - Summary of Components of Divestiture (Details)
Note 18 - Divestitures - Summary of Components of Divestiture (Details) (Parentheticals)
Note 19 - Discontinued Operations - Earnings (Losses) and Assets and Liabilities From Discontinued Operations (Details)
Note 20 - Leases - Amounts Recorded in Balance Sheet and Statement of Operations Related to Leases (Details)
Letter of Credit [Member]
Note 20 - Leases - Lease Cost (Details)
Note 20 - Leases - Maturity of Lease Liability (Details)
Note 20 - Leases - Additional Information (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Segment Reporting [Text Block]
Lessee, Operating Lease, Amounts Recorded in Balance Sheet and Statement of Operations [Table Text Block]
Tabular disclosure of amounts related to lessee's operating lease recorded in the balance sheet and the statement of operations.
us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent
Current liabilities
Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block]
us-gaap_IncreaseDecreaseInPensionPlanObligations
Contributions to defined benefit plans
Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Lessee, Lease, Additional Information [Table Text Block]
Tabular disclosure of additional information related to lessee's operating lease.
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities, redeemable noncontrolling interest and stockholders' equity
Segment Reporting [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other assets
Selling, general and administrative expenses
us-gaap_SellingExpense
Selling Expense
Lessee, Lease, Description [Table]
sxi_ShareBasedCompensationContinuingOperations
Share-based Compensation Continuing Operations
Stock-based compensation
Additional information on share-based compensation from continuing operations.
Increase/(decrease) in cash from changes in assets and liabilities, net of effects from discontinued operations and business acquisitions:
Accounts payable
us-gaap_IncreaseDecreaseInAccountsPayable
us-gaap_OtherOperatingIncome
Segment operating income
Accrued liabilities, pension and other liabilities
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net change in cash and cash equivalents
Effect of exchange rate changes on cash
Deferred Compensation Plan [Member]
Deferred compensation plan.
Engraving Group [Member]
Information pertaining to the Engraving group segment.
Electronics Products Group [Member]
Electronic products group segment.
Schedule of Intangible Assets, Excluding Goodwill [Table Text Block]
Tabular disclosure of intangible assets excluding goodwill.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Operating cash outflows from operating leases
us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Line of Credit Facility, Current Borrowing Capacity
sxi_LineOfCreditAccordionFeature
Line Of Credit, Accordion Feature
Line of credit accordion feature.
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Line of Credit Facility, Interest Rate at Period End
Financing Receivable, Allowance for Credit Loss [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Outstanding, beginning balance (in shares)
Outstanding, ending balance (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Outstanding, weighted average grant date fair value (in dollars per share)
Outstanding, weighted average grant date fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Granted (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Canceled (in shares)
Forfeited, number of shares (in shares)
us-gaap_MinorityInterestChangeInRedemptionValue
Noncontrolling Interest, Change in Redemption Value
us-gaap_LineOfCredit
Long-Term Line of Credit
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value
Line of Credit [Member]
Exercised / vested, weighted average exercise price (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
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 (in shares)
Exercised / vested (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
After 2031
us-gaap_RepaymentsOfDebt
Payments of debt
Weighted average discount rate (percentage)
Asset Class [Axis]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2027
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
2031
Proceeds from borrowings
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2029
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2028
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
2030
Fair Value Hierarchy and NAV [Axis]
Common stock, shares issued (in shares)
Common Stock, Shares, Issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding (in shares)
Award Type [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Risk-free interest rates
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Expected volatility of underlying stock
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Product Warranty Liability [Table Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Common stock, par value $1.50 per share, 60,000,000 shares authorized, 27,984,278 shares issued, 12,054,110 and 11,992,116 shares outstanding at June 30, 2026 and June 30, 2025
Schedule of Weighted Average Number of Shares [Table Text Block]
Schedule of Inventory, Current [Table Text Block]
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
sxi_GainLossFromLifeInsuranceBenefit
Life insurance benefit
Represents the amount recognized during the period for gain (loss) from life insurance benefit.
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Comprehensive Income (Loss) Note [Text Block]
Computer Equipment [Member]
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income
Contingencies Disclosure [Text Block]
Officers compensation
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to officer compensation.
Involuntary Employee Severance And Benefit Costs [Member]
Restructuring of the involuntary employee severance and benefit costs.
Current Year Restructuring Initiatives [Member]
Restructuring initiatives for current year.
Significant Accounting Policies [Text Block]
Prior Year Initiatives [Member]
Information pertaining to prior year restructuring initiatives.
Restructuring Expenses By Segment [Table Text Block]
Tabular disclosure of restructuring expenses by various segments.
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: interest
Operating lease long-term liabilities
us-gaap_OperatingLeaseLiabilityNoncurrent
Operating lease long-term liabilities
us-gaap_OperatingLeaseLiability
Present value of lease liabilities
Total lease liability
Operating lease current liability
us-gaap_OperatingLeaseLiabilityCurrent
Current accrued liabilities
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Goodwill [Text Block]
Long-term debt
us-gaap_StandardProductWarrantyAccrual
Balance at beginning of year
Balance at end of year
us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
Warranty expense
Acquired Technology [Member]
Represents information about acquired technology.
Income Tax Jurisdiction, Domestic State and Local [Member]
Standard Product Warranty, Policy [Policy Text Block]
us-gaap_LongTermDebt
Total long-term debt
us-gaap_StandardProductWarrantyAccrualPayments
Warranty claims
Loss Contingencies [Table]
Statement of Stockholders' Equity [Abstract]
Statement of Comprehensive Income [Abstract]
us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Equity securities
Statement of Cash Flows [Abstract]
Asset allocations
us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Stockholders' equity:
Equity Components [Axis]
Share-Based Payment Arrangement [Policy Text Block]
Equity Component [Domain]
us-gaap_ForeignCurrencyContractAssetFairValueDisclosure
Foreign exchange contracts
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
us-gaap_CostOfGoodsAndServicesSold
Cost of sales
Subsequent Event Type [Domain]
Subsequent Event Type [Axis]
Machinery and Equipment [Member]
Defined Benefit Plan, Assumptions [Table Text Block]
Schedule of Allocation of Plan Assets [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
Schedule of Net Funded Status [Table Text Block]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Engraving Products [Member]
Related to the engraving products segment.
Engraving Services [Member]
Related to the engraving services product.
Hydraulics Cylinders and System [Member]
Related to the hydraulics cylinders and system products.
Summary of Income Tax Examinations [Table Text Block]
Customer deposits, additions
The amount of additions to customer deposits liability contract with customer.
us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Foreign currency translation adjustment
Return to provision
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to return to provision.
Valuation allowance release
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to valuation allowance released.
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Supplemental Disclosure of Cash Flow Information:
sxi_ContractWithCustomerLiabilityCustomerDepositsDeductions
Customer deposits, deduction
The amount of deductions of customer deposits liability contract with customer.
sxi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAcquiredAssets
Other acquired assets, adjustments
This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to other acquired assets acquired in connection with a business combination for which the initial accounting was incomplete.
Liabilities, Current [Abstract]
us-gaap_CurrentIncomeTaxExpenseBenefit
Total Current
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]
us-gaap_LiabilitiesCurrent
Total current liabilities
Federal
Schedule of Interest Rate Derivatives [Table Text Block]
Non-U.S.
Cost
State
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
Lease, Cost [Table Text Block]
Customer Relationships [Member]
Revenue Benchmark [Member]
Lessee, Leases [Policy Text Block]
Amran Instrument Transformers and Narayan Powertech Pvt. Ltd. [Member]
Related to acquisitions.
Narayan Powertech Pvt. Ltd. [Member]
Related to Narayan Powertech Pvt. Ltd.
Amran Instrument Transformers [Member]
Related to Amran Instrument Transformers.
Business Combination, Pro Forma Information [Table]
Debt Disclosure [Text Block]
us-gaap_OtherOperatingIncomeExpenseNet
Other operating (income) expense, net
Other operating expense
Use of Estimates, Policy [Policy Text Block]
Stock issued under incentive compensation plans and employee purchase plans
Noncontrolling Interest Disclosure [Text Block]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Lessee, Operating Leases [Text Block]
Distributions to noncontrolling interest
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Subsidiary, Ownership Percentage, Noncontrolling Owner
UNITED STATES
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
Total funded debt
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Noncontrolling Interest [Table]
Current assets:
Stock issued for business acquisition
us-gaap_AssetsCurrent
Total current assets
us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)
Stock issued under incentive compensation plans and employee purchase plans (in shares)
Trade Names [Member]
Debt Instrument, Name [Domain]
us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Stock Issued During Period, Shares, Acquisitions (in shares)
Stock issued for business acquisition (in shares)
Target asset allocations
us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Trademarks [Member]
Related and Nonrelated Parties [Axis]
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
Treasury stock acquired (in shares)
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Net cash provided by operating activities from continuing operations
Cash Flows from Operating Activities
Cash Flows from Investing Activities
Debt Securities [Member]
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Raw materials
Cash Flows from Financing Activities
Work in process
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash provided by (used for) investing activities
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash (used for) provided by financing activities
Finished goods
Stockholders' Equity, Policy [Policy Text Block]
Restructuring Type [Axis]
Scientific Group [Member]
Represents the scientific group.
Developed Technology Rights [Member]
Scientific Products and Services [Member]
Represents scientific products and services.
Specialty Solutions Group [Member]
Represents the specialty solutions group.
Accounting Policies [Abstract]
sxi_DeferredTaxAssetsLeaseLiability
Lease liabilities
Amount, before allocation of valuation allowance, of deferred tax asset attributable to lease liability.
Segments [Axis]
Non-U.S.
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Global intangible low-taxed income, net of credits, amount
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 GILTI.
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
Beginning Balance
Ending Balance
Other Intangible Assets [Member]
us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax liability
us-gaap_DeferredIncomeTaxExpenseBenefit
Total Deferred
us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Additions based on tax positions related to the current year
us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Statute lapses and settlements
Net income
Net income attributable to Standex International Corporation
sxi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentCashAcquired
Less: cash acquired, adjustments
This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of cash acquired in connection with a business combination for which the initial accounting was incomplete.
Other Americas [Member]
Regions of other Americas.
State
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Accumulated Other Comprehensive Income (Loss) [Table]
us-gaap_CostsAndExpenses
Expenses
us-gaap_DeferredTaxAssetsInventory
Inventory
us-gaap_DeferredTaxAssetsGross
Total deferred tax asset
Cash payments, adjustments
sxi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilitiesIncurred
This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of liabilities incurred in connection with a business combination for which the initial accounting was incomplete.
McStarlite [Member]
Relating to McStarlite.
us-gaap_BusinessCombinationContingentConsiderationLiability
Contingent consideration
sxi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherLiabilities
Liabilities assumed, adjustments
This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to other liabilities assumed in connection with a business combination for which the initial accounting was incomplete.
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_TemporaryEquityEliminationAsPartofReorganization
Reclassed to accrued expenses
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury stock acquired
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions
Pension
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation
Accrued compensation
Accrued expenses, reserves and other
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate
Share-Based Compensation Arrangement by Share-Based Payment Award, Discount from Market Price, Offering Date
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date
Open Tax Year
sxi_EffectiveIncomeTaxRateReconciliationUncertainTaxPositionsPercent
Uncertain Tax Positions
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to uncertain tax positions.
us-gaap_DeferredTaxAssetsValuationAllowance
Less: Valuation allowance
Maturity
Term Loan [Member]
Information pertaining to the term loan.
Mold-Tech Singapore [Member]
Information pertaining to Mold-Tech Singapore.
us-gaap_LiabilitiesNoncurrent
Total non-current liabilities
Custom Biogenic Systems [Member]
Represents Custom biogenic systems.
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Write-offs, net of recoveries
us-gaap_AssetsNoncurrent
Total non-current assets
Nascent Technology Manufacturing [Member]
Represents Nascent technology manufacturing.
Noncompete Agreements [Member]
us-gaap_DividendsCommonStock
Dividends declared
Foreign currency translation (losses) income, net of tax
Amount after tax and reclassification adjustments, including redeemable noncontrolling interests, of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.
us-gaap_DeferredTaxLiabilities
Net deferred tax liability
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
Operating lease right-of-use-asset
sxi_BusinessCombinationPeriodForRightToAcquireRemainingInterest
Business Combination, Period for Right to Acquire Remaining Interest (Year)
Represents the period for the right to acquire remaining interest in a business combination.
sxi_BusinessCombinationPeriodForRightToTransferRemainingInterest
Business Combination, Period for Right to Transfer Remaining Interest (Year)
Represents the period noncontrolling interest holders have the right to transfer their remaining interest in a business combination.
sxi_ProFormaInformationTaxRateAssumed
Pro Forma Information, Tax Rate Assumed
The tax rate assumed for pro forma information.
sxi_ProFormaInformationInterestRateAssumption
Pro Forma Information, Interest Rate Assumption
The interest rate assumption for pro forma information.
us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings
Withholding taxes
Document Type
Document Information [Line Items]
Document Annual Report
Weighted average remaining lease term (years) (Year)
Document Information [Table]
Net sales
us-gaap_BusinessAcquisitionsProFormaRevenue
us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Effect of Dilutive Securities – Stock Options and Restricted Stock Awards (in shares)
Entity Interactive Data Current
us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)
Document Transition Report
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted – Average Shares Outstanding (in shares)
Document Financial Statement Error Correction [Flag]
us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Basic – Average Shares Outstanding (in shares)
Net income
us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Day)
Derivative Instrument [Axis]
EMEA [Member]
Income Tax Jurisdiction [Axis]
ICFR Auditor Attestation Flag
Document Fiscal Period Focus
Document Fiscal Year Focus
Amendment Flag
Common Stock [Member]
us-gaap_DerivativeAverageFixedInterestRate
Derivative, Average Fixed Interest Rate
Document Period End Date
Rental Payments [Member]
Relating to rental payments.
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
Legal Entity [Axis]
us-gaap_DerivativeFairValueOfDerivativeNet
Derivative, fair value
Entity File Number
Fixed Rate
Entity Tax Identification Number
us-gaap_DerivativeFairValueOfDerivativeAsset
Interest rate swaps
us-gaap_DerivativeFairValueOfDerivativeLiability
Foreign exchange contracts
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Equity Securities without Readily Determinable Fair Value, Amount
Entity Well-known Seasoned Issuer
Entity Current Reporting Status
Redeemable Noncontrolling Interest [Member]
Related to redeemable noncontrolling interest.
Entity Voluntary Filers
Aerospace and Defense [Member]
Represents the aerospace and defense segment.
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Entity Public Float
Payments for Inventory Purchases [Member]
Related to payments for inventory purchases.
Accounts receivable
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
Sales Made to Related Parties [Member]
Related to sales made to related parties.
Inventories
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Redeemable noncontrolling interest purchase obligation
The amount of redeemable noncontrolling interest purchase obligation classified as liability.
us-gaap_ResearchAndDevelopmentExpense
Research and Development Expense
Amran and Narayan Group [Member]
Related to related party.
Entity Filer Category
Entity Shell Company
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Liabilities assumed
Entity Emerging Growth Company
Derivative, notional amount
Notional Amount
Derivative, Notional Amount
Entity Small Business
us-gaap_OperatingIncomeLoss
Income from operations
Income From Operations
Identifiable intangible assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill
Hedging Designation [Domain]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
sxi_NoncontrollingInterestDifferenceBetweenCarryingAmountAndCashConsideration
Noncontrolling Interest, Difference Between Carrying Amount and Cash Consideration
The amount of difference between carrying amount and cash consideration of noncontrolling interest.
Property, plant, and equipment
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Customer backlog
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
sxi_DeferredTaxLiabilitiesPreviouslyUndistributedForeignEarnings
Deferred Tax Liabilities, Previously Undistributed Foreign Earnings
Amount of deferred tax liability attributable to taxable temporary differences from previously undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity.
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Global intangible low-taxed income, net of credits, percent
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Total
Entity Address, State or Province
Entity Address, City or Town
Inventory, Current [Table]
Entity Address, Address Line One
Order or Production Backlog [Member]
City Area Code
us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Business Combination, Acquiree's Revenue since Acquisition Date, Actual
us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual
Local Phone Number
Entity Address, Postal Zip Code
Derivative [Table]
us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Redeemable noncontrolling interest (see Note 18)
Title of 12(b) Security
Security Exchange Name
Trading Symbol
Derivative instruments:
Derivatives, Policy [Policy Text Block]
Other comprehensive income (loss):
us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred
Total, adjustments
Related Party Transaction [Domain]
us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles
Customer backlog, adjustments
Entity Common Stock, Shares Outstanding
us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
Property, plant, and equipment, adjustments
Fair Value, Liability
Related Party Transaction [Axis]
us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInventory
Inventories, adjustments
Hedging Designation [Axis]
Other
Less: net income attributable to redeemable noncontrolling interest
Federal Industries [Member]
Represents Federal Industries.
Other Debt Obligations [Member]
Deal related costs
Business Combination, Acquisition-Related Cost, Expense
Net income
us-gaap_ProfitLoss
Net income
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
us-gaap_DeferredTaxExpenseFromStockOptionsExercised
Deferred Tax Expense from Stock Options Exercised
Scenario [Axis]
us-gaap_HeldToMaturitySecuritiesFairValue
Debt securities
Scenario [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Forecast [Member]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Income taxes payable
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Other investing activity
Stock consideration
us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Basis of Accounting, Policy [Policy Text Block]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
us-gaap_OtherNonoperatingIncomeExpense
Foreign exchange contracts
Other non-operating (income) expense, net
Other non-operating expense, net
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived
Accrued pension and other non-current liabilities
Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent, and other not specifically disclosed noncurrent liabilities.
Electronics
us-gaap_Assets
Total assets
Auditor Firm ID
Auditor Name
Interest Rate Swaps Effective August 30, 2025 [Member]
Represents Interest Rate Swaps Effective August 30, 2025.
Geographical [Domain]
Other Restructuring [Member]
Auditor Location
Geographical [Axis]
Dividends accrued - MSPP and RSU
The amount of dividends accrued.
us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
Amortization of unrecognized pension costs, net of tax
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
NCI adjustment through equity
Noncontrolling Interest, Increase (Decrease) from equity.
Loss from discontinued operations, net of tax
us-gaap_AllowanceForDoubtfulAccountsReceivable
Balance at beginning of year
Balance at end of year
Schedule of Income Taxes Paid [Table Text Block]
Tabular disclosure of income taxes paid.
us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Income from continuing operations
Income from continuing operations
us-gaap_EarningsPerShareDiluted
Total (in dollars per share)
us-gaap_TradingSecuritiesDebt
Debt Securities, Trading
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income, Extensible Enumeration, Not Disclosed [Flag]
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income, Extensible Enumeration, Not Disclosed [Flag]
Depreciation and Amortization
us-gaap_DepreciationDepletionAndAmortization
Depreciation and amortization
Other acquired assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
Intangible Asset [Text Block]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Disposal Group Name [Domain]
Restructuring Plan [Domain]
us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
Pre-tax gain on divestiture
Restructuring Plan [Axis]
Less: comprehensive income attributable to redeemable noncontrolling interest
us-gaap_DiscontinuedOperationTaxEffectOfIncomeLossFromDisposalOfDiscontinuedOperation
Income tax expense relating to the gain on divestiture
Intangible Asset, Finite-Lived [Table Text Block]
Intangible Asset, Finite-Lived [Table]
Disposal Groups, Including Discontinued Operations [Table]
us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax
Gain on divestiture, net of tax
Disposal Group Name [Axis]
Business Combination [Text Block]
Hedging Relationship [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Canceled, weighted average grant date fair value (in dollars per share)
Award Timing MNPI Disclosure [Text Block]
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
us-gaap_PaymentsOfDividendsCommonStock
Cash dividends paid
Patents [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Contingencies (Note 12)
Statistical Measurement [Axis]
sxi_DefinedContributionPlansNumberOfPlans
Defined Contribution Plans Number of Plans
The number of defined contribution plans.
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Pension Plan [Member]
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Other Geographical [Member]
Represents information pertaining to other geographical regions not otherwise identified.
Trading Arrangements, by Individual [Table]
Retirement Benefits [Text Block]
Material Terms of Trading Arrangement [Text Block]
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Minimum [Member]
Statistical Measurement [Domain]
Insider Trading Policies and Procedures [Line Items]
Maximum [Member]
Salaried Employees [Member]
Employees that are paid at a salaried rate.
Non-U.S. Operations
Retirement Savings Plans [Member]
Savings plan for retired employees.
sxi_DefinedContributionPlanCompanyStockHeldInPlan
Defined Contribution Plan Company Stock Held in Plan (in shares)
The amount of outstanding options held by the defined contribution plan.
Hourly Employees [Member]
Employees that are paid at an hourly rate.
U.S. Operations
sxi_DefinedContributionPlanCompanyStockPercentageOfPlanAssets
Defined Contribution Plan Company Stock, Percentage of Plan Assets
The percentage of the monetary value of outstanding stock options against the value of outstanding plan assets.
sxi_ConcentrationRiskThresholdPercentage
Concentration Risk, Threshold Percentage
Represents the threshold percentage used by the company for disclosing concentration risk.
us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet
Net amount recognized
Property, Plant and Equipment, Useful Lives [Table Text Block]
The tabular disclosure of the useful lives of property, plant and equipment.
us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Recognized net actuarial loss
sxi_AccountsReceivableAllowanceForCreditLossesAdditionsFromBusinessAcquisition
Acquisitions and other
The change in allowance for uncollectible accounts related to accounts receivable acquired in a business acquisition.
Amortization of prior service cost (benefit)
us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Defined Benefit Plan, Accumulated Benefit Obligation
Actual return on plan assets
us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets
Changes in valuation allowances, percent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Provision for income taxes, percent
Federal Tax, percent
Statutory tax rate difference, percent
Tax expense on Procon Pumps disposal
us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
Current liabilities
Employer contribution
us-gaap_DefinedBenefitPlanContributionsByEmployer
Defined Benefit Plan, Plan Assets, Contributions by Employer
Schedule of Fair Value of Plan Assets [Table Text Block]
Tabular disclosure of the fair values of plan assets.
Income Tax Jurisdiction [Domain]
Target [Member]
Represents the target allocations of plan assets.
Activity under share-based payment plans
Amount of cash inflow (outflow) from issuance of shares under share-based payment arrangement. Excludes option exercised.
Corporate Bonds and Other Fixed Income Securities [Member]
Corporate bond securities and other investments that provide a return in the form of a fixed periodic payment and eventual return of principal at maturity.
Foreign Exchange Contract 1 [Member]
Foreign Exchange Contract 1
New England Teamsters and Trucking Industry Pension Fund [Member]
Information pertaining to the New England Teamsters and Trucking Industry Pension Fund.
Cost of Sales and Selling, General and Administrative Expenses, Policy [Policy Text Block]
Disclosure of accounting policy related to cost of goods sold and selling, general and administrative expenses.
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Interest cost
Interest Cost
IAM National Pension Fund National Pension Plan [Member]
Information pertaining to the IAM National Pension Fund, National Pension Plan.
Funded Status
us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Other, nontaxable or nondeductible items, percent
Land, Buildings and Leasehold Improvements [Member]
Represents information pertaining to land, buildings and leasehold improvements.
us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Fair value of pension plan assets
Fair value of plan assets at beginning of year
Fair value of plan assets at end of year
Foreign currency exchange rate & other changes
us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation
us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Expected return on plan assets
Dividends declared, per share (in dollars per share)
Machinery, Equipment and Other [Member]
Represents information pertaining to machinery, equipment and other.
Changes in unrecognized tax benefits, percent
Domestic, state and local income taxes, net of federal income tax effect (a), percent
sxi_PercentOfParticipantsAnnualIncentiveCompensationParticipantsMayElectToDeferMaximum
Percent of Participants Annual Incentive Compensation Participants May Elect to Defer Maximum
The maximum percentage of employees' annual incentive compensation in restricted stock, which is purchased at a discount to the market, that they may elect to defer.
us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Net periodic benefit cost (benefit)
Cash repatriation
Exercised / vested, aggregate intrinsic value
The intrinsic value of equity-based payment equity instruments, excluding stock (or unit) options, that vested during the reporting period as calculated by applying the disclosed pricing methodology.
sxi_ExpirationOfRestrictionsOnUnits
Expiration of Restrictions on Units (Year)
The amount of time after which the restriction on the units will expire.
Executive Compensation Plan [Member]
Information about the Company's Executive Compensation Program.
us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Other, percent
us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
Unrecognized net actuarial loss
sxi_SharesOfCommonStockIssuedDeterminedByAdjustmentOfTargetRangePercent
Shares of Common Stock Issued Determined by Adjustment of Target Range Percent
The percentage by which the number of common stock issued will be adjusted upward or downward at the end of the performance period.
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign
Foreign Tax Credits, percent
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCredits
Federal tax credits
Service cost
Service Cost
Performance Stock Units [Member]
Information about the Company's performance stock units.
sxi_InterestCoverageRatioRequirement
Interest Coverage Ratio, Requirement
The interest coverage ratio, which is ratio of "Adjusted EBIT per the Credit Agreement" to interest expense for the trailing twelve months, required by the credit agreement for the Company's unsecured Revolving Credit Facility entered into on January 5, 2012. Adjusted EBIT per the Credit Agreement specifically excludes extraordinary and certain other defined items such as non-cash restructuring and acquisition-related charges up to $2.0 million, and goodwill impairment.
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Rate of compensation increase
sxi_PercentOfFairMarketValueAtWhichEmployeesMayPurchaseSharesOfStock
Percent of Fair Market Value at Which Employees May Purchase Shares of Stock
Element describing the percentage of fair value at which employees may purchase shares of the Company's common stock.
sxi_StockReservedForEmployeeStockPurchasePlan
Stock Reserved for Employee Stock Purchase Plan (in shares)
Represents the number of shares of stock that are reserved for the Company's Employee Stock Purchase Plan.
Employee Stock Purchase Plan [Member]
Information about the company's Employee Stock Purchase Plan.
Unrecognized prior service cost
us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
sxi_ExtraordinaryAndCertainOtherDefinedItemsExcludedFromAdjustedEBIT
Extraordinary and Certain Other Defined Items Excluded from Adjusted EBIT
The amount of extraordinary and certain other defined items such as non-cash restructuring and acquisition-related charges that is excluded from Adjusted EBIT per the Credit Agreement in calculating the Company's Interest Coverage Ratio.
sxi_StockIssuedDuringPeriodAveragePrice
Stock Issued During Period Average Price (in dollars per share)
Represents the average price of shares issued during the period.
sxi_InterestCoverageRatioActual
Interest Coverage Ratio, Actual
The Company's interest coverage ratio as of the reporting date, indicating whether the Company has met the interest coverage ratio requirement under the Credit Agreement.
Type of Restructuring [Domain]
us-gaap_DefinedBenefitPlanBenefitObligation
Benefit obligation at beginning of year
Projected benefit obligation at end of year
sxi_LeverageRatioRequirement
Leverage Ratio, Requirement
The required ratio of funded debt to trailing twelve month Adjusted EBITDA (as defined in the Credit Agreement, calculated as Adjusted EBITDA per the Credit Agreement plus Depreciation and Amortization), under the Company's unsecured Revolving Credit Facility entered into on January 5, 2012.
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsOther
Other, tax credits, percent
sxi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedAggregateIntrinsicValue
Non-vested, aggregate intrinsic value
Non-vested, aggregate intrinsic value
The intrinsic value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units, as calculated by applying the disclosed pricing methodology.
sxi_LeverageRatioActual
Leverage Ratio, Actual
The Company's leverage ratio as of the reporting date, indicating whether the Company has met the leverage ratio requirement under the Credit Agreement.
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
Research & Development Credits, percent
Award Type [Axis]
Adjustments to reconcile net income to net cash provided by operating activities:
Annual Component [Member]
In a table in which awards activity under a compensation program is summarized in terms of "annual component" and "performance stock units," this is the element representing "annual component."
Expected quarterly dividends (per share) (in dollars per share)
sxi_ShareBasedcompensationarrangementbyshareBasedpaymentawardfairvalueassumptionsexpectedquarterlydividends
Represents the dividend per share that is expected every quarter.
Plan Name [Axis]
Restructuring Cost [Table]
Plan Name [Domain]
Defined Benefit Plan [Table]
Schedule of Provision for Income Taxes [Table Text Block]
Tabular disclosure of the total provision for income taxes included in the consolidated financial statements. May be shown broken down between, for example, continuing operations and discontinued operations.
Restructuring and Related Costs [Table Text Block]
sxi_DeferredTaxAssetsNetOperatingLossAndCreditCarryforwards
Net operating loss and credit carry forwards
Represents the deferred asset related to net operating loss and credit carry-forwards.
Portuguese Tax Authority [Member]
The tax authority of Portugal.
sxi_IncomeTaxExpenseBenefitAttributableToContinuingAndDiscontinuedOperations
Total provision (benefit)
Represents the total of the provision for income taxes including the income tax expense or benefit attributable to both continuing and discontinued operations.
Section 174 Capitalization
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
Consolidation Items [Axis]
Property, plant and equipment, net and other noncurrent assets
Subsequent Event [Member]
us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Share-Based Payment Arrangement, Expense, Tax Benefit
Consolidation Items [Domain]
Change in fair value of derivatives, tax
Change in fair value of derivatives, net of tax
Change in unrealized gains, net of tax
Share-Based Payment Arrangement [Text Block]
us-gaap_AociLossCashFlowHedgeCumulativeGainLossAfterTax
Unrealized (losses) gains on derivative instruments, net of tax
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax
Change in unrealized gains (losses)
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax
Amortization of unrealized gains and (losses) into interest expense, net of tax
Intangible assets, useful life (Year)
Finite-Lived Intangible Asset, Useful Life (Year)
Asia Pacific [Member]
Contingent consideration
us-gaap_NumberOfReportingUnits
Goodwill, Reporting Unit, Number
New Accounting Pronouncements, Policy [Policy Text Block]
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Antidilutive Securities, Name [Domain]
Statement [Table]
Discontinued Operations [Member]
Credit Facility [Axis]
Credit Facility [Domain]
Canada Revenue Agency [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Amended and Restated Credit Agreement [Member]
Information pertaining to the Amended and Restated Credit Agreement.
Swing Line Loan [Member]
Information pertaining to the Swing Line Loan.
National Tax Agency, Japan [Member]
Ministry of Finance, India [Member]
us-gaap_InvestmentsFairValueDisclosure
Marketable securities - deferred compensation plan
Federal Ministry of Finance, Germany [Member]
Business Combination, Consideration Transferred, Equity Interest, Type [Axis]
Revenue Commissioners, Ireland [Member]
Gain on sale of business
Gain on sale of business
State Administration of Taxation, China [Member]
Equity Securities [Member]
sxi_DisposalGroupIncludingDiscontinuedOperationNetAssets
Net assets sold
Amount classified as net assets after liabilities attributable to disposal group held for sale or disposed of.
Long-Term Debt, Type [Axis]
Product and Service [Domain]
Product and Service [Axis]
Ownership [Axis]
Ownership [Domain]
Property, plant and equipment, useful life (Year)
His Majesty's Revenue and Customs (HMRC) [Member]
Statement [Line Items]
us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested
Proceeds from Divestiture of Businesses, Net of Cash Divested
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2028
Fair Value of Financial Instruments, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2029
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2027
Accounts payable
Accounts Payable, Current
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Thereafter
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2030
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
2031
Proceeds withdrawn from life insurance policies
Disposal Group Classification [Axis]
Disposal Group Classification [Domain]
Professional fees
us-gaap_AccruedProfessionalFeesCurrent
Capital expenditures
us-gaap_SegmentExpenditureAdditionToLongLivedAssets
Accrued Liabilities, Current
Total
Accrued liabilities
Related Party [Member]
Payroll and employee benefits
Schedule of Related Party Transactions [Table Text Block]
Accrued interest
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Defined Benefit Plan, Expected Future Benefit Payment, Year One
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
Expected life of option grants (in years) (Year)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Proceeds from sale of business
Accrued taxes payable
Workers' compensation
us-gaap_WorkersCompensationLiabilityCurrent
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years
Income Tax Jurisdiction, Domestic Federal [Member]
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
Rate of compensation increase
Intangible Asset, Finite-Lived, Class [Axis]
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate
Discount rate
us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets
Intangible Asset, Finite-Lived, Class [Domain]
Long-Term Debt, Type [Domain]
us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue
Foreign exchange contracts
Defined Benefit Plan, Plan Assets, Category [Axis]
Defined Benefit Plan, Plan Assets, Category [Domain]
Accrued material and services costs
Carrying value as of the balance sheet date of obligations incurred through that date and payable for material and services costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Total
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 1 [Member]
Warranty reserves
Income Tax Jurisdiction, Foreign [Member]
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Property, plant and equipment, net
Property, plant and equipment, net
Tangible long-lived assets
Property, plant and equipment, gross
Prepaid benefit cost
us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Non-current liabilities
us-gaap_ProvisionForDoubtfulAccounts
Provision charged to expense
us-gaap_DeferredIncomeTaxAssetsNet
Deferred tax asset
Property, Plant, and Equipment [Policy Text Block]
Furniture and Fixtures [Member]
Stock-based compensation
us-gaap_GainLossFromComponentsExcludedFromAssessmentOfCashFlowHedgeEffectivenessNet
Gain (Loss) from Components Excluded from Assessment of Cash Flow Hedge Effectiveness, Net
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest
Total identifiable assets, liabilities and redeemable noncontrolling interest
Accounts receivable, less allowance for credit losses of $4,579 and $3,985 at June 30, 2026 and June 30, 2025 respectively
Accounts Receivable, after Allowance for Credit Loss, Current
us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Net cash provided by (used for) investing activities from continuing operations
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Gain on sale of real estate and equipment
us-gaap_PaymentsToAcquireLifeInsurancePolicies
Expenditures for executive life insurance policies
Net cash used for operating activities from discontinued operations
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less accumulated depreciation
Net cash provided by investing activities from discontinued operations
Accumulated other comprehensive loss
Total accumulated other comprehensive income
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Accumulated amortization
us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Expenditures for acquisitions, net of cash acquired
Income from continuing operations before income taxes
Income from continuing operations before income taxes
Income from continuing operations before income taxes
Additional paid-in capital
sxi_ExtraordinaryAndCertainOtherDefinedItemsExcludedFromAdjustedEBITPercentageOfEBITDA
Extraordinary and Certain Other Defined Items Excluded from Adjusted EBIT, Percentage of EBITDA
The amount of extraordinary and certain other defined items such as non-cash restructuring and acquisition-related charges, as a percentage of EBITDA, that is excluded from Adjusted EBIT per the Credit Agreement in calculating the Company's Interest Coverage Ratio.
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Discontinued Operations, Disposed of by Sale [Member]
us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Prepaid expenses and other current assets
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
us-gaap_PaymentsToAcquireProductiveAssets
Expenditures for property, plant and equipment
Goodwill and Intangible Assets, Policy [Policy Text Block]
sxi_PolicyTable
us-gaap_GrossProfit
Gross profit
Goodwill [Table]
us-gaap_GoodwillPurchaseAccountingAdjustments
Goodwill, adjustments
us-gaap_Depreciation
Depreciation
Redeemable noncontrolling interest
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Payments to Acquire Debt Securities, Available-for-Sale
Other Operating Segment [Member]
us-gaap_GoodwillImpairmentLoss
Impairments
us-gaap_AdvertisingExpense
Advertising Expense
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Operating Segments [Member]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Segments [Domain]
us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Unrealized pension (losses), net of tax
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table]
Reserve for doubtful accounts
Accounts Receivable [Policy Text Block]
Income from continuing operations (in dollars per share)
us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare
Income from continuing operations (in dollars per share)
Internal Revenue Service (IRS) [Member]
Corporate Segment [Member]
Income Statement [Abstract]
Cash and Cash Equivalents [Member]
us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
(Loss) income from discontinued operations (in dollars per share)
Loss from discontinued operations
Net (loss) from discontinued operations
us-gaap_TreasuryStockCommonValue
Treasury shares (15,930,168 shares in 2026 and 15,992,162 shares in 2025)
Treasury stock, common shares (in shares)
Treasury Stock, Common, Shares (in shares)
Balance (in shares)
Balance (in shares)
Treasury Stock, Common [Member]
us-gaap_AmortizationOfIntangibleAssets
Intangible Asset, Finite-Lived, Amortization Expense
us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
State
Discontinued operations
Benefit for taxes
us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations
Non-U.S.
us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Federal
us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Translation adjustment
Income Tax Disclosure [Text Block]
Restricted Stock [Member]
Income Tax, Policy [Policy Text Block]
Statutory tax rate difference, amount
Federal Tax, amount
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Related and Nonrelated Parties [Domain]
us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
Accumulated other comprehensive income, pre-tax
us-gaap_DeferredFinanceCostsNet
Issuance cost
Related Party Transaction [Table]
Other, nontaxable or nondeductible items, amount
Domestic, state and local income taxes, net of federal income tax effect (a), amount
Changes in unrecognized tax benefits, amount
us-gaap_IncomeTaxReconciliationOtherAdjustments
Other, amount
us-gaap_IncomeTaxReconciliationTaxCreditsOther
Other, tax credits, amount
Fair Value Hierarchy and NAV [Domain]
us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Foreign Tax Credits, amount
Statement of Financial Position [Abstract]
us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Research & Development Credits, amount
Current assets
Hedge Funds, Global Opportunity [Member]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
Deferred tax liabilities, net
us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
Settlement (gain) / loss recognized
Total income taxes paid, (net of refunds received)
Income taxes, net of refunds
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
us-gaap_PaymentsToMinorityShareholders
Distributions to noncontrolling interest
us-gaap_OtherAssetsNoncurrent
Other non-current assets
us-gaap_PaymentsForRepurchaseOfCommonStock
Purchase of treasury stock and other
Restructuring costs
Restructuring Costs
Restructuring costs
us-gaap_DefinedBenefitPlanActuarialGainLoss
Actuarial gain
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
us-gaap_IncomeTaxPaidForeignAfterRefundReceived
Non-U.S.
Antidilutive Securities [Axis]
Diluted earnings per share attributable to Standex International Corporation shareholders:
Basic earnings per share attributable to Standex International Corporation shareholders:
Intangible Asset, Indefinite-Lived, Class [Domain]
U.K. Pension Plans [Member]
Represents the information pertaining to U.K. Pension Plans [Member]
us-gaap_EarningsPerShareBasic
Total (in dollars per share)
Research and Development Expense, Policy [Policy Text Block]
Other, effects of changes in tax laws or rates enacted, percent
U.S. Pension Plans [Member]
Represents the information pertaining to U.S. pension plans.
sxi_LeverageRatioRequirementMaximumUnderCertainCircumstancesInConnectionMaterialAcquisition
Leverage Ratio, Requirement, Maximum Under Certain Circumstances in Connection Material Acquisition
The maximum leverage ration required under certain circumstances in connection material acquisition.
sxi_StandardProductWarrantyAccrualAcquisitionsAndOtherCharges
Acquisitions and other charges
Amount of increase (decrease) in the standard product warranty accrual from acquisitions and other charges.
Intangible Asset, Indefinite-Lived, Class [Axis]
Effective Income Tax Rate Reconciliation [Table]
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
U.S. State and Local
Foreign Plan [Member]
Retirement Plan Sponsor Location [Domain]
Domestic Plan [Member]
Tax Jurisdiction of Domicile [Extensible Enumeration]
Earnings Per Share, Policy [Policy Text Block]
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
U.S. Federal
Retirement Plan Sponsor Location [Axis]
Intangible assets, net
Other, effects of changes in tax laws or rates enacted, amount
us-gaap_GoodwillAcquiredDuringPeriod
Acquisitions
Acquisitions
us-gaap_FiniteLivedIntangibleAssetsNet
Total
Restructuring and Related Activities Disclosure [Text Block]
Restructuring costs
us-gaap_RestructuringReserve
Restructuring liabilities
Restructuring liabilities
Goodwill
Goodwill
Goodwill
Balance
Balance
Building [Member]
us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax
Actuarial (losses) and other changes in unrecognized costs, net of tax
Variable lease cost
Operating lease cost
us-gaap_RestructuringReservePeriodIncreaseDecrease
Additions and adjustments
Business Combination, Consideration Transferred, Equity Interest, Type [Domain]
us-gaap_LeaseCost
Net lease cost
Business Combination [Domain]
Business Combination [Axis]
Transferred over Time [Member]
Disaggregation of Revenue [Table Text Block]
us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Business Combination, Voting Equity Interest Acquired, Percentage
Foreign currency translation adjustment
Business Combination [Table]
Timing of Transfer of Good or Service [Axis]
Business Combination, Pro Forma Information [Table Text Block]
Timing of Transfer of Good or Service [Domain]
us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
Pension, net of tax
Pension and OPEB adjustments, tax
us-gaap_OtherComprehensiveIncomeLossNetOfTax
Other comprehensive (loss) income, net of tax
Contract assets, additions
Represents information related to additions of contract with customer asset.
sxi_ContractWithCustomerAssetDeductions
Contract assets, deduction
Represents information related to deductions of contract with customer asset.
Interest expense
Interest expense
Amounts included in the contract liability balance at the beginning of the year
us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
us-gaap_InterestExpenseNonoperating
Interest rate swaps
Retained earnings
Fair value of noncontrolling interest at acquisition
Multiemployer Plan [Table Text Block]
Contract assets
Revenue from Contract with Customer [Text Block]
Class of Stock [Axis]
Revenue [Policy Text Block]
Foreign Exchange Contract [Member]
Cash Flow Hedging [Member]
Deferred income taxes
Not Designated as Hedging Instrument [Member]
Foreign currency exchange rate & other changes
us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss
us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid
Benefits paid
us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid
Benefits paid
Derivative Instruments, Gain (Loss) [Table Text Block]
us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
Defined Benefit Plan, Expected Amortization of Gain (Loss), Next Fiscal Year
Property, Plant, and Equipment [Table]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Hedging Relationship [Axis]
Derivative Contract [Domain]
Long-Lived Asset, Class [Axis]
Cash and Cash Equivalents, Policy [Policy Text Block]
Designated as Hedging Instrument [Member]
us-gaap_CashAcquiredFromAcquisition
Less: cash acquired
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents
Non-cash portion of restructuring charge
The amount of non-cash portion of restructuring charge.
us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement
Plan settlements
us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Common Stock, Capital Shares Reserved for Future Issuance (in shares)
Customer deposits
us-gaap_PaymentsForRestructuring
Payments
Cash payments
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
us-gaap_InterestRateDerivativeAssetsAtFairValue
Interest rate swaps
Asset Class [Domain]
Interest
Interest Rate Swap [Member]
Inventory Disclosure [Text Block]
Schedule of Long-Term Debt Instruments [Table Text Block]
Disaggregation of Income Statement Expense, Caption [Table]
Disposal Groups, Including Discontinued Operations [Table Text Block]
Inventories
Total
us-gaap_StockholdersEquity
Total stockholders' equity
Balance
Balance
Goodwill [Table Text Block]
us-gaap_PaymentForContingentConsiderationLiabilityFinancingActivities
Payment for Contingent Consideration Liability, Financing Activities
Contingent consideration payment
Operating lease right-of-use-asset
Property, Plant, and Equipment [Table Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Depreciation and amortization
Net sales
Net Sales
Inventory, Policy [Policy Text Block]
Changes in valuation allowances, amount