Document And Entity Information
Statistical Measurement [Axis]
Note To Financial Statement Details Textual
us-gaap_DividendsPayableDateDeclaredDayMonthAndYear
Dividends Payable, Date Declared
Significant Accounting Policies
Note 2 - Summary of Significant Accounting Policies
Income tax expense
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 3 - Acquisition of Canada's Best Holdings
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 4 - Acquisition of Royston Group
Transferred at Point in Time [Member]
Trading Arrangements, by Individual [Table]
Note 5 - Segment Reporting Information
Material Terms of Trading Arrangement [Text Block]
Note 6 - Earnings Per Common Share
lyts_MaximumNetLeverageRatio
Maximum Net Leverage Ratio
The maximum net leverage ratio.
lyts_PolicyTable
Note 7 - Inventories, Net
lyts_InterestCoverageRatio
Interest Coverage Ratio
The interest coverage ratio.
Note 8 - Accrued Expenses
Note 9 - Goodwill and Other Intangible Assets
Note 10 - Debt
Other segment items *
The amount of other segment items.
Minimum [Member]
Note 13 - Supplemental Cash Flow Information
Note 15 - Leases
Foreign currency transaction loss on intercompany loan
Statistical Measurement [Domain]
Dividends Payable [Table]
Note 16 - Income Taxes
Goodwill
Maximum [Member]
us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Accumulated impairment losses
Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)
Note 3 - Acquisition of Canada's Best Holdings - Schedule of Assets Acquired and Liability Assumed (Details)
CBH [Member]
Represents CBH.
Note 3 - Acquisition of Canada's Best Holdings - Schedule of Intangible Assets Acquired (Details)
Note 3 - Acquisition of Canada's Best Holdings - Pro Forma Information (Details)
Note 4 - Acquisition of Royston Group - Schedule of Assets Acquired and Liability Assumed (Details)
Condensed Financial Statements [Text Block]
us-gaap_IncreaseDecreaseInAccountsAndNotesReceivable
Accounts receivable
Note 4 - Acquisition of Royston Group - Schedule of Intangible Assets Acquired (Details)
Note 4 - Acquisition of Royston Group - Pro Forma Information (Details)
Note 5 - Segment Reporting Information - Summarized Financial Information by Operating Segments (Details)
Operating and Intersegment [Member]
Related to operating and intersegment.
Note 5 - Segment Reporting Information - Identifiable Assets by Segment (Details)
Note 6 - Earnings per Common Share - Basic and Diluted Earnings Per Share (Details)
Note 7 - Inventories, Net - Inventories (Details)
Note 8 - Accrued Expenses - Accrued Expenses (Details)
Note 9 - Goodwill and Other Intangible Assets - Goodwill (Details)
Note 9 - Goodwill and Other Intangible Assets - Other Intangible Assets (Details)
Note 9 - Goodwill and Other Intangible Assets - Amortization Expense of Other Intangible Assets (Details)
Note 9 - Goodwill and Other Intangible Assets - Future Amortization Expense (Details)
Note 10 - Debt - Debt (Details)
Note 10 - Debt - Debt (Details) (Parentheticals)
Note 13 - Supplemental Cash Flow Information - Supplemental Cash Flow Information (Details)
us-gaap_IncreaseDecreaseInDeferredCompensation
Deferred compensation plan
Note 15 - Leases - Operating Lease Information (Details)
Note 15 - Leases - Maturities of Lease Liability (Details)
Note 16 - Income Taxes - Reconciliation of Income Tax Rate (Details)
lyts_BusinessCombinationConsiderationTransferredWorkingCapitalAdjustmentAndEarnoutPayment
Business Combination, Consideration Transferred, Working Capital Adjustment and Earnout Payment
Amount of working capital adjustment and earnout payment incurred by the acquirer as part of consideration transferred in a business combination.
Notes To Financial Statements
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective tax rate
Notes To Financial Statements [Abstract]
lyts_BusinessCombinationConsiderationTransferredBeforeAdjustmentAndEarnoutPayment
Business Combination, Consideration Transferred, Before Adjustment and Earnout Payment
Amount of consideration transferred before adjustment and earnout payment, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
Provision for income taxes at the anticipated annual tax rate
Performance Shares [Member]
us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Refundable income taxes
us-gaap_CommonStockDividendsPerShareDeclared
Common Stock, Dividends, Per Share, Declared (in dollars per share)
Land
Uncertain tax positions
Deferred income tax adjustment
us-gaap_IncreaseDecreaseInInventories
Inventories
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
LSi Employee Stock Purchase Plan (ESPP) [Member]
Relating to the LSI Employee Stock Purchase Plan (ESPP).
lyts_EmployeeStockOwnershipPlanESOPDiscountPercentage
Employee Stock Ownership Plan (ESOP), Discount Percentage
Represents the amount of discount on stock purchased through an employee stock ownership plan.
Dividends [Axis]
Segment Reporting [Text Block]
Dividends [Domain]
ESPP discount
Amount of employee stock purchase plan discount.
Award Type [Axis]
Segment Reporting [Table Text Block]
Non-cash items included in net income
Preferred shares, without par value; Authorized 1,000,000 shares, none issued
Plan Name [Axis]
Plan Name [Domain]
Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Consolidation Items [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities & shareholders' equity
Segment Reporting [Table]
Condensed Balance Sheet Statement [Table]
us-gaap_ShareBasedCompensation
Stock compensation expense
Selling and administrative expenses
Deferred stock compensation
This element represents movements included in the statement of changes in stockholders' equity which related to the deferred stock compensation.
Subsequent Event [Member]
Consolidation Items [Domain]
LIABILITIES & SHAREHOLDERS' EQUITY
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
us-gaap_EmployeeStockOwnershipPlanESOPNumberOfAllocatedShares
Employee Stock Ownership Plan (ESOP), Number of Allocated Shares (in shares)
Lessee, Lease, Description [Table]
Share-Based Payment Arrangement [Text Block]
Changes in certain assets and liabilities:
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Preferred shares, issued (in shares)
Acquired intangible asset, useful life (Year)
Condensed Cash Flow Statement [Table]
Preferred shares, authorized shares (in shares)
Employee Stock Ownership Plan (ESOP), Plan [Domain]
Accrued expenses and other
Employee Stock Ownership Plan (ESOP) Name [Axis]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Increase in cash and cash equivalents
Change related to foreign currency
lyts_PurchaseOfCompanyStockForTheDeferredCompensationPlanWhichIsHeldInARabbiTrustAmount
Activity of treasury shares, net
The amount of a purchase of company stock for the deferred compensation plan which is held in a rabbi trust.
lyts_TreasuryStockEmployeeStockTrust
Treasury shares, without par value
Value of treasury in a trust (for example, a 'rabbi trust') set up specifically to accumulate stock for the sole purpose of distribution to participating employees. This trust does not allow employees to immediately or after a holding period diversify into nonemployer securities. The deferred compensation plan for which this trust is set up must be settled by the delivery of a fixed number of shares of employer stock.
Dividend per share (in dollars per share)
Commitments and contingencies (Note 14)
us-gaap_NumberOfReportingUnits
Number of Reporting Units
lyts_PurchaseOfCompanyStockForTheDeferredCompensationPlanWhichIsHeldInARabbiTrustShares
Activity of treasury shares, net (in shares)
The number of shares of a purchase of company stock for the deferred compensation plan which is held in a rabbi trust.
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Key Executive Deferred Compensation [Member]
Information pertaining to the key executive deferred compensation.
Statement [Table]
Credit Facility [Axis]
Fixed payments - operating lease cash flows
Credit Facility [Domain]
Revolving Credit Facility [Member]
Machinery and equipment
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Assets obtained in exchange for operating lease obligations
us-gaap_FinanceLeasePrincipalPayments
Payments on financing lease obligations
Repayments of principal portion - financing cash flows
Trademarks and Trade Names [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Line of Credit Facility, Remaining Borrowing Capacity
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (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)
Long-Term Debt, Type [Axis]
Product and Service [Domain]
Product and Service [Axis]
Secured line of credit
us-gaap_LineOfCredit
Consolidated Entities [Axis]
Consolidated Entities [Domain]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
Thereafter, operating lease
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total lease payments, operating lease
us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Net property, plant and equipment
Revision of Prior Period [Domain]
us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization
us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization
Less accumulated depreciation
Revision of Prior Period [Axis]
Weighted Average Discount Rate
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2027, operating lease
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
2031, operating lease
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2029, operating lease
Commitments and Contingencies Disclosure [Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2028, operating lease
Statement [Line Items]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
2030, operating lease
Common shares, issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common shares, outstanding (in shares)
Award Type [Domain]
Common shares, authorized shares (in shares)
Schedule of Accrued Liabilities [Table Text Block]
us-gaap_DividendsPayableCurrentAndNoncurrent
Dividends Payable
Intangible Asset and Goodwill [Table Text Block]
Common shares, without par value; Authorized 50,000,000 shares; Outstanding 36,697,563 and 30,054,532 shares, respectively
Amortization of right-of-use assets
Schedule of Inventory, Current [Table Text Block]
Equity raise
us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from Issuance of Common Stock
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearThree
2028
Accounts payable
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFour
2029
Present Value of Lease Liabilities, finance lease
us-gaap_FinanceLeaseLiability
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextRollingTwelveMonths
2026
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearTwo
2027
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive
Thereafter, finance lease
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income
us-gaap_FinanceLeaseLiabilityPaymentsDue
Total lease payments, finance lease
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingYearFive
2030
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRollingAfterYearFive
After 2030
us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount
Less: Interest, finance lease
us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree
2029, finance lease
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo
2028, finance lease
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive
2031, finance lease
Capital expenditures
us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour
2030, finance lease
Concentration Risk Type [Axis]
Accrued expenses
Total Accrued Expenses
Borrowings on long-term debt
us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
2027, finance lease
Interest on lease liabilities
Interest - operating cash flows
us-gaap_ReportingUnitAmountOfFairValueInExcessOfCarryingAmount
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount
lyts_NumberOfMajorCustomers
Number of Major Customers
Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.
Compensation and benefits
Significant Accounting Policies [Text Block]
us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount
Accrued sales commissions
Accrued warranty
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: Interest, operating lease
Accrued sales and use tax
Operating lease liabilities
Long-term operating lease liability
Other accrued expenses
Present Value of Lease Liabilities, operating lease
us-gaap_OperatingLeaseLiability
Total operating lease liabilities
us-gaap_OperatingLeaseLiabilityCurrent
Operating lease liabilities
Display Solutions Segment [Member]
Represents the display solutions segment.
lyts_LesseeOperatingSubleasePaymentToBeReceivedYearOne
2027, operating subleases
Amount of lease payment to be received for operating sublease in next 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).
lyts_LesseeOperatingSubleasePaymentToBeReceivedYearTwo
2028, operating subleases
Amount of lease payment to be received for operating sublease in second 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).
Accounts Receivable [Member]
lyts_LesseeOperatingSubleasePaymentToBeReceivedYearThree
2029, operating subleases
Amount of lease payment to be received for operating sublease in 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).
lyts_LesseeOperatingSubleasePaymentToBeReceivedYearFour
2030, operating subleases
Amount of lease payment to be received for operating sublease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).
Less: amounts due within one year
Current maturities of long-term debt
Concentration Risk Type [Domain]
Total other intangible assets, gross
Total amounts due after one year, net
Long-term debt, less current maturities
lyts_LesseeNetLeaseCommitmentsLiabilityToBePaidYearFive
2031, operating subleases
Amount of lessee's undiscounted obligation for lease payment for net lease commitments to be paid in fifth 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).
lyts_LesseeOperatingSubleasePaymentsToBeReceived
Total lease payments, operating subleases
Amount of lease payments to be received for operating sublease.
Construction in progress
Proceeds from the sale of fixed assets
lyts_LesseeNetLeaseCommitmentsLiabilityToBePaidAfterYearFive
Thereafter, operating subleases
Amount of lessee's undiscounted obligation for lease payment for net lease commitments due after fifth 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).
Term loan, net of debt issuance costs of $8 and $14, respectively
us-gaap_LongTermDebt
Statement of Stockholders' Equity [Abstract]
Intangible Asset, Finite-Lived, Class [Axis]
Statement of Comprehensive Income [Abstract]
Intangible Asset, Finite-Lived, Class [Domain]
Statement of Cash Flows [Abstract]
Foreign currency translation adjustment
Other comprehensive (loss)
Long-Term Debt, Type [Domain]
Shareholders' Equity
Equity Components [Axis]
Proceeds from stock option exercises
Equity Component [Domain]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Net Purchase Consideration
Equity [Text Block]
AOCI Attributable to Parent [Member]
Retained Earnings [Member]
Cost of products and services sold
Inventory obsolescence reserve
Subsequent Event Type [Domain]
Allowance for credit losses
Key Executive Compensation
Balance includes deferred compensation plan in which amounts earned by an employee are invested in the Company's common stock and placed in a Rabbi Trust. Included in this balance is an amount equal to the original amount of compensation deferred.
Subsequent Event Type [Axis]
Lighting Segment [Member]
The lighting segment of the company.
Deferred tax assets
Corporate and Eliminations [Member]
Eliminating entries used in consolidating a parent entity and its subsidiaries. Also includes corporate headquarters or functional department that may not earn revenues or may earn revenues that are only incidental to the activities of the entity and is not considered an operating segment.
Sale of Stock [Axis]
us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued
Issuance of common shares to fund deferred compensation plan
Stock-based compensation expense
Intangible Asset and Goodwill [Text Block]
EMI Industries [Member]
Represents EMI Industries.
Deferred tax liabilities
Accounts receivable, less allowance for credit losses of $1,192 and $1,152, respectively
us-gaap_GainLossOnDispositionOfAssets
(Gain) loss on disposition of fixed assets
us-gaap_LiabilitiesCurrent
Total current liabilities
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Secured Overnight Financing Rate (SOFR) [Member]
Customer Concentration Risk [Member]
us-gaap_IncomeTaxesPaid
Income taxes
lyts_LongtermPerformanceBasedCompensation
Long-term performance based compensation
Amount of expense for long-term performance based compensation.
lyts_AmortizationOfAcquiredIntangibleAssets
Amortization expense on acquired intangible assets
The aggregate expense charged against earnings to allocate the cost of acquired intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.
Lease, Cost [Table Text Block]
Accrued freight
Amount of accrued freight as of the balance sheet date.
lyts_AnnualIndicatedPerShareDividendRate
Annual Indicated per Share Dividend Rate (in dollars per share)
The indicated per share dividend rate for a specific fiscal year.
Customer Relationships [Member]
Revenue Benchmark [Member]
Other Commitments [Table]
Common shares, par value (in dollars per share)
Accumulated other comprehensive income
First Reporting Unit [Member]
Represents the first reporting unit.
Accumulated amortization
Second Reporting Unit [Member]
Represents the second reporting unit.
us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Acquisition of business
Third Reporting Unit [Member]
Represents a third reporting unit.
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before income taxes
us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Debt Disclosure [Text Block]
Other current assets
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
ESPP stock awards
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property, plant, and equipment
Equity raise
Board stock compensation
Non-US [Member]
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Current assets
Shares used in the acquisition of a business
Stock options exercised, net
Schedule of Debt [Table Text Block]
us-gaap_AssetsCurrent
Total current assets
Restricted stock units issued, net of shares withheld for tax withholdings
Board stock compensation (in shares)
ESPP stock awards (in shares)
Aircraft Dry Leases [Member]
Represents aircraft dry leases.
CEO's Limited Liability Company [Member]
Represents the CEO's LLC.
us-gaap_GrossProfit
Gross profit
Trade Names [Member]
Equity raise (in shares)
Restricted Stock Units (RSUs) [Member]
Debt Instrument, Name [Domain]
Shares used in the acquisition of a business (in shares)
Stock options exercised, net (in shares)
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
Related and Nonrelated Parties [Axis]
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
Schedule of Long-Term Debt Instruments [Table]
Cash Flow, Supplemental Disclosures [Text Block]
Debt Instrument [Axis]
Common Stock Including Additional Paid in Capital [Member]
Cash Flows from Operating Activities
Raw materials
Cash Flows from Investing Activities
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash flows provided by operating activities
Cash Flows from Financing Activities
Work-in-progress
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash flows (used in) 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 flows provided by (used in) financing activities
Finished goods
Reporting Unit [Domain]
Reporting Unit [Axis]
Operating Segments [Member]
us-gaap_StockIssuedDuringPeriodSharesEmployeeStockOwnershipPlan
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in shares)
Accounting Policies [Abstract]
Segments [Domain]
lyts_BusinessAcquisitionProFormaGrossProfit
Gross Profit
The pro forma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period.
Allowance for doubtful accounts
Segments [Axis]
Income Statement [Abstract]
Intersegment Eliminations [Member]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Deferred income taxes
Income Tax Contingency [Table]
us-gaap_TreasuryStockCommonShares
Balance (in shares)
Balance (in shares)
Treasury Stock, Common [Member]
Net income
Net income
us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Dividends Payable, Date of Record
Amortization expense of other intangible assets
Foreign currency translation
Income Tax Disclosure [Text Block]
us-gaap_BusinessCombinationContingentConsiderationLiability
Business Combination, Contingent Consideration, Liability
Share-Based Payment Arrangement [Member]
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsNet
Deferred tax assets
lyts_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccruedExpenses
Accrued expenses
Amount of accrued expenses assumed at the acquisition date.
lyts_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets
Operating lease right-of-use assets
The amount of operating lease right-of-use assets recognized as of the acquisition date.
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Related and Nonrelated Parties [Domain]
Debt Issuance Costs
us-gaap_DeferredFinanceCostsNet
Related Party Transaction [Table]
Related Party Transactions Disclosure [Text Block]
us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementLoss
Lease expense on the step-up basis of acquired leases
us-gaap_RepaymentsOfLongTermDebt
Payments on long-term debt
Statement of Financial Position [Abstract]
us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Dividends Payable, Date to be Paid
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
Deferred tax liability
Noncompete Agreements [Member]
Refundable income tax
us-gaap_DividendsCommonStock
Dividends — $0.20 per share
us-gaap_ProfessionalFees
Consulting expense: commercial growth initiatives
Other long-term assets, net
Shares issued for deferred compensation
Value of stock issued for deferred compensation during period.
Document Type
Weighted average shares outstanding during the period, net of treasury shares (in shares)
The weighted average total number of shares issued throughout the period net of treasury shares which includes shares accounted for like treasury stock. This element is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).
lyts_IssuanceOfCommonStockAsCompensation
Issuance of common shares as compensation
Fair value of share-based compensation granted to employees and nonemployees as payment for services rendered or acknowledged claims.
Document Information [Line Items]
Document Quarterly Report
Restructuring / severance costs
Weighted Average remaining Lease Term (in years) (Year)
Shares issued for deferred compensation (in shares)
Number of shares issued during period for deferred compensation.
Document Information [Table]
February Public Offering [Member]
Represents February Public Offering.
us-gaap_BusinessAcquisitionsProFormaRevenue
Sales
Anti-dilutive securities (in shares)
us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax
Business Combination, Pro Forma Information, Pro Forma Income (Loss) from Continuing Operations, after Tax
Income tax provision refund
Amount of income tax provision refund acquired in business combination and recognized at acquisition date.
lyts_BusinessCombinationConsiderationTransferredEstimatedCashAndWorkingCapitalPrefunded
Business Combination, Consideration Transferred, Estimated Cash and Working Capital Prefunded
Amount of estimated cash and working capital prefunded consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
Entity Interactive Data Current
Senior Secured Credit Facility [Member]
Represents senior secured credit facility.
Weighted average vested restricted stock units outstanding (in shares)
Document Transition Report
lyts_BusinessCombinationConsiderationTransferredBeforePrefundedEstimatedCashAndWorkingCapital
Business Combination, Consideration Transferred, Before Prefunded Estimated Cash and Working Capital
Amount of consideration transferred before prefunded estimated cash and working capital acquired, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block]
Diluted (in shares)
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Weighted average shares outstanding (in shares)
Royston [Member]
Represents Royston.
Earnings per common share (see Note 6)
Intangible Asset, Indefinite-Lived, Class [Domain]
Impact of common shares to be issued under stock option plans, and contingently issuable shares, if any (in shares)
Basic (in shares)
Basic (in shares)
Weighted average shares outstanding (in shares)
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Year)
Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block]
Basic (in dollars per share)
Basic income per share (in dollars per share)
Adjusted net income
The adjusted portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent
Share-based compensation
Tax rate difference between reported and adjusted net income
Amount of tax rate difference between reported and adjustment net income during a period of time.
us-gaap_StockIssued1
Issuance of common shares
Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table]
Intangible Asset, Indefinite-Lived, Class [Axis]
O 2026 Q4 Dividends [Member]
Represents O 2026 Q4 Dividends.
Accrued rebate
Current portion of accrued rebate as of balance sheet date.
Intangible assets, net
Fourth Reporting Unit [Member]
Represents Fourth Reporting Unit.
Revision of Prior Period, Adjustment [Member]
Buildings
Amortized intangible assets, net
Document Fiscal Period Focus
Amortized intangible assets, gross
Document Fiscal Year Focus
Amendment Flag
Technology-Based Intangible Assets [Member]
us-gaap_SubleaseIncome
Sublease income
Indefinite-lived intangible assets, gross
Goodwill, net
us-gaap_Goodwill
Goodwill
Document Period End Date
Variable lease cost
Legal Entity [Axis]
Operating lease cost
us-gaap_LeaseCost
Total lease cost
Business Combination [Domain]
Entity File Number
Entity Tax Identification Number
Business Combination [Axis]
Transferred over Time [Member]
Disaggregation of Revenue [Table Text Block]
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
The 2019 Omnibus Award Plan [Member]
Information pertaining to the 2019 Omnibus Award Plan.
Entity Current Reporting Status
Business Combination [Table]
Entity Incorporation, State or Country Code
Liability reduction - operating cash flows
Amount of cash outflow from operating lease on principal.
Timing of Transfer of Good or Service [Axis]
Business Combination, Pro Forma Information [Table Text Block]
Timing of Transfer of Good or Service [Domain]
Current Fiscal Year End Date
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
Accounts receivable
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Inventory
Prepaids expenses and other current assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Cash and cash equivalents
Entity Filer Category
Entity Shell Company
Property, plant and equipment, at cost
Entity Emerging Growth Company
Entity Small Business
us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Gross Contractual Amount
us-gaap_OperatingIncomeLoss
Operating income
Acquired intangible assets
Intangible assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Identifiable Assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
Accounts payable
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Other assets
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Property, plant and equipment
lyts_PaymentProceedsRelatedToTaxWithholdingShareBasedPaymentArrangement
Shares withheld on employees' taxes
Amount of cash outflow and inflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.
Interest expense
Interest expense
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Entity Address, State or Province
Inventory, Current [Table]
Entity Address, City or Town
Retained earnings
Entity Address, Address Line One
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
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Other long-term liabilities
Local Phone Number
Entity Address, Postal Zip Code
Title of 12(b) Security
Security Exchange Name
Trading Symbol
Class of Stock [Axis]
Variable Rate [Domain]
Revenue [Policy Text Block]
Related Party Transaction [Domain]
Entity Common Stock, Shares Outstanding
Related Party Transaction [Axis]
Earnings Per Share [Text Block]
Preferred shares, par value (in dollars per share)
us-gaap_BusinessCombinationAcquisitionRelatedCosts
Business Combination, Acquisition-Related Cost, Expense
Acquisition costs
Scenario [Axis]
Scenario [Domain]
Forecast [Member]
Income taxes
us-gaap_AccruedIncomeTaxesCurrent
Weighted average common shares outstanding
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation
Operating lease liabilities
us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Business Combination, Consideration Transferred, Equity Interest
Previously Reported [Member]
us-gaap_OtherNonoperatingIncomeExpense
Other (income)/expense
Sale of Stock [Domain]
us-gaap_Assets
Assets
Total assets
Cash and cash equivalents
Geographical [Domain]
Geographical [Axis]
Diluted income per share (in dollars per share)
Diluted (in dollars per share)
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
us-gaap_ContractWithCustomerLiabilityCurrent
Customer prepayments
Depreciation and amortization
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Indefinite life intangible assets acquired
Project Management, Installation Services, Shipping and Handling [Member]
Represents project management, installation services, shipping and handling.
Finite life intangible assets acquired
Consolidation, Policy [Policy Text Block]
Lessee, Leases [Text Block]
The entire disclosure for the lessee's operating and finance leases.
us-gaap_InterestPaidNet
Interest
Inventory Disclosure [Text Block]
lyts_LesseeLeasesRemainingTerm
Lessee, Leases, Remaining Term (Year)
Remaining lease term of the lessee's leases.
Intangible Asset, Finite-Lived [Table]
Lessee, Leases, Liability, Maturity [Table Text Block]
Tabular disclosure of the lessee's leases.
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total shareholders' equity
Balance
Balance
Inventories
Total Inventories
Business Combination [Text Block]
Term Loan [Member]
Represents a term loan.
Customer prepayments
Goodwill [Table Text Block]
us-gaap_PaymentsOfDividendsCommonStock
Cash dividends paid
us-gaap_PaymentsOfDividends
Payments of Dividends
Stock, Class of Stock [Table]
Patents [Member]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table]
Goodwill acquired, net of adjustments
Net amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.
Signage and Display Products [Member]
Represents signage and display products.
Operating lease right-of-use assets
Total operating right-of-use assets
Other long-term liabilities
Lighting, Poles, and Electronic Components [Member]
Represents lighting, poles, and electronic components.
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Net sales
Net sales
Revenue from Contract with Customer, Including Assessed Tax
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]