Document And Entity Information
Marketable Securities, Policy [Policy Text Block]
Note To Financial Statement Details Textual
Statistical Measurement [Axis]
Significant Accounting Policies
us-gaap_IncomeTaxExpenseBenefit
Income Tax Expense (Benefit)
Income Tax Provision / (Benefit), amount
Income (taxes)
Note 2 - Summary of Significant Accounting Policies
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 3 - Acquisition of Micro Engineering, Inc.
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 4 - Intangible Assets
Trading Arrangements, by Individual [Table]
Note 5 - Revenue Recognition
Material Terms of Trading Arrangement [Text Block]
Note 6 - Inventories
One Distributor [Member]
Represents one distributor.
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Note 7 - Property, Plant, And Equipment
Financial Instrument [Axis]
sodi_EquitySecuritiesFvniAccumulatedGrossUnrealizedLoss
Equity Securities, FV-NI, Accumulated Gross Unrealized Loss
Marketable securities, gross unrealized losses
Amount of accumulated gross unrealized loss on equity securities.
Note 8 - Accrued Expenses and Other Current Liabilities
Note 9 - Income Taxes
Wafer Bank Inventory [Member]
Represents Wafer Bank inventory.
Note 12 - Disaggregation of Revenue and Major Customers
Note 15 - Notes Payable
Note 2 - Summary of Significant Accounting Policies - Summary of Marketable Securities (Details)
sodi_EquitySecuritiesFvniAccumulatedGrossUnrealizedGains
Equity Securities, FV-NI, Accumulated Gross Unrealized Gains
Amount of accumulated gross unrealized gains on equity securities.
Insider Trading Policies and Procedures [Line Items]
Statistical Measurement [Domain]
Note 2 - Summary of Significant Accounting Policies - Summary of Non-current Securities (Details)
us-gaap_SharePrice
Share Price (in dollars per share)
Maximum [Member]
sodi_AccruedInterestExpenseOnContingentConsideration
Accrued interest expense on contingent consideration
Amount of accrued interest expense on contingent consideration.
Note 2 - Summary of Significant Accounting Policies - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)
Note 2 - Summary of Significant Accounting Policies - Roll Forward of Contingent Consideration (Details)
Note 2 - Summary of Significant Accounting Policies - Schedule of Property, Plant, and Equipment (Details)
sodi_EffectiveIncomeTaxRateReconciliationPermanentBookAndTaxDifferencePercentage
Permanent Book/Tax Differences, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to permanent book and tax differences.
Retirement Plan Name [Domain]
Note 3 - Acquisition of Micro Engineering, Inc. - Schedule of Contingent Consideration (Details)
Cost of Goods and Service Benchmark [Member]
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Note 4 - Intangible Assets - Schedule of Finite-lived Intangible Assets (Details)
Note 4 - Intangible Assets - Schedule of Amortization of Finite-lived Intangible Assets (Details)
Retirement Plan Name [Axis]
Note 5 - Revenue Recognition - Schedule of Sales Returns and Allowances and Accrual Activity (Details)
Useable Office and Production Space in Orange County, Florida [Member]
Represents usable office and production space in Orange County, FL.
Note 6 - Inventories - Schedule of Inventory (Details)
Note 7 - Property, Plant, And Equipment - Schedule of Property, Plant, And Equipment (Details)
Note 8 - Accrued Expenses and Other Current Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Details)
Note 9 - Income Taxes - Reconciliation of Effective Tax Rate (Details)
Note 9 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)
Note 9 - Income Taxes - Summary of Net Operating Loss Carryforwards (Details)
Note 12 - Disaggregation of Revenues and Major Customers - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details)
Business Description and Basis of Presentation [Text Block]
Business Combination, Contingent Consideration [Table Text Block]
Note 15 - Notes Payable - Principal Payments (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Mortgage loan, net of current portion
Counterparty Name [Axis]
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Income Tax Provision
Mortgage loan, current portion
us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Provision/(Benefit) at statutory rate, rate
Income Tax Jurisdiction [Domain]
Land [Member]
Financial Instruments [Domain]
Capitalized R&D
Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from capitalized research and development.
sodi_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value
Leasehold Improvements [Member]
us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
State Tax Provision/(Benefit) net of federal benefit, rate
us-gaap_EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes
True-Up & Adjustments, rate
sodi_BusinessAcquisitionDeferredTaxLiabilityRelatedToAccrualToCashAdjustment
MEI accrual to cash
Amount of deferred tax liability attributable to taxable temporary differences from accrual to cash on business acquisition.
Counterparty Name [Domain]
us-gaap_IncreaseDecreaseInInventories
Inventories
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain]
Adjustments to reconcile net income to net cash provided by operating activities:
Preferred stock, $.01 par value, authorized 500,000 shares, none issued
us-gaap_Liabilities
TOTAL LIABILITIES
Defined Benefit Plan [Table]
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Title and Position [Axis]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
us-gaap_DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance (in shares)
Stock based compensation
us-gaap_ShareBasedCompensation
Selling, general and administrative expenses
Share-Based Payment Arrangement [Text Block]
Location, Statement of Income, Balance [Axis]
Lease Contractual Term [Axis]
Lease Contractual Term [Domain]
Changes in Operating Assets and Liabilities:
Accounts payable
Preferred Stock, Shares Issued (in shares)
us-gaap_FiniteLivedIntangibleAssetUsefulLife
Finite-Lived Intangible Asset, Useful Life (Year)
Preferred Stock, Shares Authorized (in shares)
Unrealized Gains
us-gaap_DeferredTaxAssetsInvestments
Deferred Tax Assets, Investments
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase (decrease) in cash and cash equivalents
us-gaap_DeferredTaxLiabilitiesPrepaidExpenses
Prepaid expenses
us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent
Accrued contingent consideration, current
us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent
Accrued contingent consideration, non-current
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents - beginning of the year
Cash and cash equivalents - end of period
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Statement [Table]
us-gaap_DeferredTaxLiabilitiesInvestments
Deferred Tax Liabilities, Investments
Unrealized Gains
us-gaap_FinanceLeasePrincipalPayments
Payments on finance lease liabilities
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Schedule of Estimated Useful Life of Property, Plant, and Equipment [Table Text Block]
Tabular disclosure of the useful life of physical assets used in the normal conduct of business and not intended for resale.
Long-Term Debt, Type [Axis]
us-gaap_EquitySecuritiesFvNiCost
Marketable securities, cost
Miscellaneous income
us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossCumulativeAmount
Long term investments, impairment
Consolidated Entities [Axis]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Consolidated Entities [Domain]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table Text Block]
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Schedule of Maturities of Long-Term Debt [Table Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares)
Commitments and Contingencies Disclosure [Text Block]
Statement [Line Items]
us-gaap_FairValueNetAssetLiability
Total
Fair Value Hierarchy and NAV [Axis]
Common stock, shares issued (in shares)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Common stock, shares outstanding (in shares)
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Common stock, shares authorized (in shares)
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Common stock, $.01 par value, authorized 10,000,000 shares, 2,147,703 shares outstanding, net of 436,677 treasury shares at February 28, 2026 and 2,082,553 shares outstanding, net of 487,827 treasury shares at February 28, 2025, respectively
Proceeds from sale of stock
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2028
Fair Value of Financial Instruments, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2029
Supplier [Axis]
Schedule of Inventory, Current [Table Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2027
Supplier [Domain]
Tax Period [Domain]
Tax Period [Axis]
Accounts payable
us-gaap_AccountsPayableCurrent
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Thereafter
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2030
us-gaap_TableTextBlock
Notes Tables
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
2031
Computer Equipment [Member]
us-gaap_AccruedEmployeeBenefitsCurrent
Payroll and related employee benefits
Proceeds from sale of marketable securities
Concentration Risk [Table]
us-gaap_AccruedProfessionalFeesCurrent
Legal fees
Subsequent Events [Text Block]
Concentration Risk Type [Axis]
Accrued expenses and other current liabilities
Totals
Concentration Risk Disclosure [Text Block]
Significant Accounting Policies [Text Block]
us-gaap_OtherAccruedLiabilitiesCurrent
Other liabilities
sodi_OperatingLossCarryforwardsNotSubjectToExpiration
indefinite
Amount of operating loss carryforwards that are not subject to expiration dates.
sodi_OperatingLossCarryforwardsSubjectToExpiration
2029
Amount of operating loss carryforwards that are subject to expiration.
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
thereafter
Accounts Receivable [Member]
Tax Year 2037 [Member]
Represents 2037 tax year.
Tax Year 2029 [Member]
Represents 2029 tax year.
us-gaap_TaxesPayableCurrent
Property, sales, and franchise taxes
sodi_DeferredTaxAssetsLiabilitiesGross
Total Deferred Tax Assets
Amount, before allocation of valuation allowances and after deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.
Concentration Risk Type [Domain]
Business Combination, Contingent Consideration, Type [Domain]
Capitalization, Equity [Table]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2028
Micro Engineering Inc [Member]
Represents Micro Engineering Inc.
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2030
Business Combination, Contingent Consideration, Type [Axis]
Profit Sharing Plan [Member]
Represents a profit sharing plan.
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2027
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
2031
Income Tax Jurisdiction, Domestic Federal [Member]
Income Tax Jurisdiction, Domestic State and Local [Member]
Long-term investment
us-gaap_LongTermDebt
Total principal payments
Proceeds on mortgage loan
Intangible Asset, Finite-Lived, Class [Axis]
Statement of Stockholders' Equity [Abstract]
us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Equity Securities, FV-NI
Intangible Asset, Finite-Lived, Class [Domain]
Statement of Cash Flows [Abstract]
Long-Term Debt, Type [Domain]
Equity Components [Axis]
Share-Based Payment Arrangement [Policy Text Block]
Equity Component [Domain]
Offsetting Liabilities [Table]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Summary of Operating Loss Carryforwards [Table Text Block]
Equity [Text Block]
Fair Value, Inputs, Level 1 [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Cost of sales
Asset Acquisition [Domain]
Asset Acquisition [Axis]
Property, plant and equipment, net
Net Property, Plant and Equipment
Compensation and Employee Benefit Plans [Text Block]
Gross Property, Plant and Equipment
Gross Property, Plant and Equipment
us-gaap_AssetAcquisitionConsiderationTransferred
Asset Acquisition, Consideration Transferred
Subsequent Event [Table]
Accrued contingent consideration, current
Deferred tax asset
Accrued contingent consideration, non-current
Property, Plant, and Equipment [Policy Text Block]
Machinery and Equipment [Member]
Issuance/sale of shares
us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued
us-gaap_DeferredCompensationArrangementWithIndividualExercisePrice
Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share)
STOCKHOLDERS’ EQUITY
Stock based compensation
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Supplemental disclosures of cash flow data
CURRENT LIABILITIES
us-gaap_GainLossOnInvestments
Net realized and unrealized (gains) losses on investments
Realized gain on investments
us-gaap_LiabilitiesCurrent
TOTAL CURRENT LIABILITIES
Supplier Concentration Risk [Member]
sodi_PolicyTable
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table]
Accounts receivable
Customer Concentration Risk [Member]
us-gaap_PaymentsToAcquireEquitySecuritiesFvNi
Purchases of long-term investments
Marketable securities
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period (in shares)
Customer Relationships [Member]
Revenue Benchmark [Member]
Other Commitments [Table]
Lessee, Leases [Policy Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: Accumulated Depreciation and Amortization
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Finite-lived intangible assets, accumulated amortization
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Net Income/(Loss) Before Taxes, amount
Net income before income tax
us-gaap_PaymentsToAcquireMarketableSecurities
Purchases of marketable securities
us-gaap_CashUninsuredAmount
Cash, Uninsured Amount
Additional paid-in capital
Debt Disclosure [Text Block]
Segment Reporting, Policy [Policy Text Block]
Use of Estimates, Policy [Policy Text Block]
Prepaid expenses and other current assets
us-gaap_CustomerRefundLiabilityCurrent
Return allowance
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchases of property and equipment
UNITED STATES
Within 30 Days After the End of Each Fiscal Quarter [Member]
Related to award date.
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
CURRENT ASSETS
Ninety Days After Agreement Date [Member]
Related to ninety days after agreement date.
us-gaap_AssetsCurrent
TOTAL CURRENT ASSETS
Stock based compensation (in shares)
us-gaap_GrossProfit
Gross profit
Debt Instrument, Name [Domain]
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Depreciation
Trademarks [Member]
Related and Nonrelated Parties [Axis]
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
Repurchase of shares (in shares)
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Axis]
Operating activities
Investing activities
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Financing activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash (used in) investing activities
us-gaap_TreasuryStockAcquiredAverageCostPerShare
Shares Acquired, Average Cost Per Share (in dollars per share)
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 provided by financing activities
us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Long-Lived Asset, Held and Used, Impairment Loss
Adjustment of shares (in shares)
Issuance/sale of shares (in shares)
us-gaap_DeferredCompensationArrangementWithIndividualSharesIssued
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)
Accounting Policies [Abstract]
Long-Lived Asset, Excluding Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
Deferred Compensation Arrangement with Individual, Compensation Expense
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table]
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts Receivable, Allowance for Credit Loss, Current
Accounts Receivable [Policy Text Block]
Income Statement [Abstract]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Deferred income tax benefit
us-gaap_TreasuryStockCommonValue
Less treasury stock
Treasury stock, common shares (in shares)
Balance (in shares)
Balance (in shares)
Treasury Stock, Common [Member]
Net income (loss)
Net income
Net income
Amortization of intangibles
Intangible Asset, Finite-Lived, Amortization Expense
Inventory Allowance
Income Tax Disclosure [Text Block]
us-gaap_BusinessCombinationContingentConsiderationLiability
Business Combination, Contingent Consideration, Liability
Totals
Contingent consideration, balance
Contingent consideration, balance
Net Operating Loss Carryforwards
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_DeferredTaxAssetsLiabilitiesNet
Total Deferred Tax Assets (Liabilities), after valuation
Income Tax, Policy [Policy Text Block]
Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]
us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Provision/(Benefit) at statutory rate, amount
Related and Nonrelated Parties [Domain]
Inventory [Domain]
Inventory [Axis]
R&D Credit Carryforward
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Repurchase of shares
Shipping And Handling Costs [Policy Text Block]
Disclosure of accounting policy for shipping and handling costs.
Raw Materials [Member]
Bank of America, Loan One [Member]
Represents information pertaining to the first Bank of America loan.
Bank of America, Loan Two [Member]
Represents information pertaining to the second Bank of America loan.
ES Components [Member]
Represents information pertaining to ES Components.
us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
State Tax Provision/(Benefit) net of federal benefit, amount
Accrued Liabilities
us-gaap_IncomeTaxReconciliationPriorYearIncomeTaxes
True-Up & Adjustments, amount
Related Party Transactions [Policy Text Block]
The entire accounting policy disclosure for related party transactions.
Used Equipment Purchased From ES Components [Member]
Represents information pertaining to the used equipment purchased from ES Components.
Die from ES Components [Member]
Represents the die from ES Components.
Fair Value Hierarchy and NAV [Domain]
Work-in-process [Member]
Represents information pertaining to inventory classified as work-in-process.
Other income (loss)
Statement of Financial Position [Abstract]
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Valuation allowance
Finished Goods [Member]
Represents information pertaining to finished goods.
us-gaap_NonoperatingIncomeExpense
Total other (loss)
Allowance for Sales Reserve
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Accounts Receivable, Allowance for Credit Loss, Writeoff
Customers with Government Contracts [Member]
Represents information pertaining to customers that have government contracts.
Income taxes paid
Sales Returns and Allowances Accrual Activity [Table Text Block]
The entire tabular disclosure of sales returns and allowance accrual activities.
Credits Issued
The amount of credits issued in regards to sales returns and allowances accrued.
Accrued Allowances and Adjustments
Amount of allowances accrued relating to sales returns.
Europe and Australia [Member]
Represents information pertaining to Europe and Australia.
Canada and Latin America [Member]
Represents information pertaining to Canada and Latin America.
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Net book value of intangible assets
Non-military, Scientific, Industrial Customers and Distributors [Member]
Represents information pertaining to non-military, scientific, or industrial customers and distributors without end user information.
us-gaap_RepaymentsOfSecuredDebt
Principal payments on mortgage loan
L3Harris [Member]
Represents information pertaining to L3Harris.
Vehicles [Member]
Conmed Linvatec [Member]
Represents information pertaining to Conmed Linvatec.
Other assets
Document Type
sodi_LesseeFinanceLeaseOptionToPurchasePurchaseAmount
Lessee, Finance Lease, Option to Purchase, Purchase Amount
Represents the amount required to buy out an finance lease with an option to purchase.
Document Information [Line Items]
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_DefinedContributionPlanCostRecognized
Defined Contribution Plan, Cost
us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Other assets, non-current
Document Annual Report
Document Information [Table]
us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares)
Entity Interactive Data Current
Document Transition Report
Document Financial Statement Error Correction [Flag]
Notes Payable to Banks [Member]
Weighted average shares outstanding - basic and diluted (in shares)
Unrealized gain (loss) on investments
Net income per common share - basic and diluted (in dollars per share)
Effective Income Tax Rate Reconciliation [Table]
Title and Position [Domain]
Equity Securities without Readily Determinable Fair Value [Table Text Block]
Earnings Per Share, Policy [Policy Text Block]
sodi_DebtInstrumentContingencyMinimumAmountRequiredOfUnrestrictedUnencumberedLiquidAssets
Debt Instrument, Contingency, Minimum Amount Required of Unrestricted, Unencumbered, Liquid Assets
The contingency agreement requiring the company to maintain a minimum amount of unrestricted, unencumbered, liquid assets.
Income Tax Jurisdiction [Axis]
Intangible assets
Property in West Palm Beach, Florida [Member]
Represents information pertaining to the property in West Palm Beach, Florida.
ICFR Auditor Attestation Flag
Finite-lived intangible assets, net
Total
Document Fiscal Period Focus
Customer [Domain]
Finite-lived intangible assets, gross
Document Fiscal Year Focus
Disaggregation of Revenue and Major Customers [Text Block]
The entire disclosure for the disaggregation of revenue and major customers.
Micro Property [Member]
Represents information pertaining to the Micro Property.
Amendment Flag
Equity Securities without Readily Determinable Fair Value [Table]
Accrued interest expense
Document Period End Date
Building Improvements [Member]
Building [Member]
One Security [Member]
Represents one individual security.
Property, Plant, and Equipment [Text Block]
Long-Lived Asset, Class [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
Legal Entity [Axis]
Business Combination [Domain]
Entity File Number
Entity Tax Identification Number
Business Combination [Axis]
Disaggregation of Revenue [Table]
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Long term investments, cost
Entity Well-known Seasoned Issuer
Entity Current Reporting Status
Business Combination [Table]
Entity Voluntary Filers
Entity Incorporation, State or Country Code
Current Fiscal Year End Date
Entity Public Float
Entity Filer Category
Entity Shell Company
Entity Emerging Growth Company
Entity Small Business
us-gaap_OperatingIncomeLoss
Operating income
sodi_EquitySecuritiesWithoutReadilyDeterminableFairValueAccumulatedGrossUnrealizedLoss
Long term investments, unrealizes losses
The accumulated gross unrealized loss of the amount of investment in equity security without readily determinable fair value.
sodi_EquitySecuritiesWithoutReadilyDeterminableFairValueAccumulatedGrossUnrealizedGain
Long term investments, unrealized gains
The accumulated gross unrealized gain of the amount of investment in equity security without readily determinable fair value.
sodi_EquitySecuritiesWithoutReadilyDeterminableFairValueFairValueDisclosure
Long term investments, fair value
The fair value disclosure of the equity securities.
sodi_IncreaseDecreaseInSalesReturnsAllowance
Increase (Decrease) in Sales Returns Allowance
The amount of increase or decrease to the sales returns allowance during the period.
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Total
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)
us-gaap_Revenues
Revenues
Entity Address, State or Province
Entity Address, City or Town
Inventory, Current [Table]
Marketable Securities [Table]
us-gaap_InterestExpenseNonoperating
Interest expense
Retained earnings
Entity Address, Address Line One
City Area Code
Local Phone Number
Entity Address, Postal Zip Code
Revenue from Contract with Customer [Text Block]
Accrued expenses, other current and non-current liabilities
us-gaap_ContractWithCustomerRefundLiability
Beginning Balance
Ending Balance
Title of 12(b) Security
Class of Stock [Axis]
Entity Common Stock, Shares Outstanding
Chief Financial Officer [Member]
Chief Operating Officer [Member]
Common Stocks [Member]
Represents Common Stocks.
Chief Executive Officer [Member]
Board of Directors Chairman [Member]
Contingent considerations adjustment
sodi_BusinessCombinationContingentConsiderationChangeInContingentConsiderationLiabilityAdjustments
Contingent consideration expense
Amount of adjustment of liability in contingent consideration arrangement in business combination, including, but not limited to, difference arising upon settlement.
Property, Plant, and Equipment [Table]
Common stock, par or stated value (in dollars per share)
Basis of Accounting, Policy [Policy Text Block]
Intracom Defense Electronics [Member]
Represents Intracom Defense Electronics.
RTX Corporation [Member]
Represents RTX Corporation.
Long-Lived Asset, Class [Axis]
us-gaap_Assets
TOTAL ASSETS
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and cash equivalents
Auditor Firm ID
Earn-out Payment for Period Ended December 31, 2025 [Member]
Represents the Earn-out Payment for Period Ended December 31, 2025.
Auditor Name
sodi_RateOfGrossRevenuePaidToShareholders
Rate of Gross Revenue Paid to Shareholders
Represents the rate of gross revenue actually received and collected that is paid to shareholders as a result of a business acquisition.
Non-Current Securities [Member]
Represents non-current securities.
Geographical [Domain]
Auditor Location
Earn-out Payment for Period Ended December 31, 2024 [Member]
Represents the Earn-out Payment for Period Ended December 31, 2024.
Geographical [Axis]
Acquisition of Micro Engineering Inc [Member]
Represents the acquisition of micro engineering inc.
Director Three [Member]
Represents director three.
sodi_DebtInstrumentCovenantFixedChargeCoverageRatio
Debt Instrument, Covenant, Fixed Charge Coverage Ratio
Requirement for fixed charge coverage ratio under the debt agreement.
Director One [Member]
Represents director one.
Director Two [Member]
Represents director two.
us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
Related Party Transaction, Purchases from Related Party
Revenue from Contract with Customer [Policy Text Block]
Customer [Axis]
us-gaap_PaymentsToAcquireBusinessesGross
Payments to Acquire Businesses, Gross
Customer deposits
us-gaap_ContractWithCustomerLiabilityCurrent
Common Stock, Outstanding [Member]
Represents information pertaining to common stock outstanding.
us-gaap_DepreciationDepletionAndAmortization
Depreciation, Depletion and Amortization
sodi_IncreaseDecreaseInContingentConsiderationLiability
Contingency consideration
Represents the amount of increase (decrease) in contingent consideration liability during the period.
Intangible Asset [Text Block]
Consolidation, Policy [Policy Text Block]
Dividend income
Supplier, Two [Member]
Information pertaining to suppliers.
Interest income
Investment Income, Interest
sodi_ConcentrationRiskNumberOfSuppliers
Concentration Risk, Number of Suppliers
Represents the number of suppliers.
Interest expense paid
Supplier, One [Member]
Information pertaining to suppliers.
Inventory Disclosure [Text Block]
Tax Year 2038 [Member]
Represents 2038 tax year.
Two Suppliers [Member]
Information pertaining to suppliers.
Intangible Asset, Finite-Lived [Table Text Block]
Intangible Asset, Finite-Lived [Table]
Business Combination [Table Text Block]
Inventories, net
Inventory, Net
Business Combination [Text Block]
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
Customer deposits
us-gaap_InventoryGross
Inventory, Gross
us-gaap_StockholdersEquity
TOTAL STOCKHOLDERS’ EQUITY
Balance
Balance
Award Timing MNPI Disclosure [Text Block]
us-gaap_PaymentForContingentConsiderationLiabilityOperatingActivities
Payment for Contingent Consideration Liability, Operating Activities
Earn out payment
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
us-gaap_PaymentForContingentConsiderationLiabilityInvestingActivities
Payment of contingent consideration
Stock, Class of Stock [Table]
sodi_EffectiveIncomeTaxRateReconciliationPermanentBookAndTaxDifferences
Permanent Book/Tax Differences, 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 permanent book and tax differences.
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
us-gaap_InventoryValuationReserves
Inventory, Valuation Reserves
Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table]
us-gaap_PaymentsForRepurchaseOfEquity
Stock repurchase
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Property, Plant, and Equipment [Table Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Net Book Value of Fixed Assets
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Net sales
Inventory, Policy [Policy Text Block]
Marketable Securities [Table Text Block]