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Micro Property [Member] Represents information pertaining to the Micro Property. Amendment Flag Equity Securities without Readily Determinable Fair Value [Table] Accrued interest expense Proceeds from sale of marketable securities Concentration Risk [Table] us-gaap_AccruedProfessionalFeesCurrent Legal fees Concentration Risk Type [Axis] Accrued expenses and other current liabilities Totals Document Period End Date Building Improvements [Member] Concentration Risk Disclosure [Text Block] Building [Member] 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] Significant Accounting Policies [Text Block] MOOG [Member] Represents information pertaining to MOOG. 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Major Customers, 2026 [Member] The total percentage of revenue generated by the three major customers in 2026. sodi_EquitySecuritiesWithoutReadilyDeterminableFairValueFairValueDisclosure Long-term Investment The fair value disclosure of the equity securities. us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares) Long-term investment us-gaap_LongTermDebt Long-Term Debt Total principal payments us-gaap_Revenues Revenues Entity Address, State or Province Statement of Stockholders' Equity [Abstract] Entity Address, City or Town Inventory, Current [Table] Marketable Securities [Table] us-gaap_InterestExpenseNonoperating Interest expense us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent Common Stocks, Marketable Securities Retained Earnings Entity Address, Address Line One Statement of Cash Flows [Abstract] City Area Code Local Phone Number Entity Address, Postal Zip Code Revenue from Contract with Customer [Text Block] us-gaap_ContractWithCustomerRefundLiability Beginning Balance Ending Balance Accrued expenses, other current and non-current liabilities Long-Term Debt, Type [Domain] Equity Components [Axis] Share-Based Payment Arrangement [Policy Text Block] Class of Stock [Axis] Equity Component [Domain] Offsetting Liabilities [Table] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Inputs, Level 1 [Member] Entity Common Stock, Shares Outstanding Additional Paid-in Capital [Member] Retained Earnings [Member] Chief Operating Officer [Member] Common Stocks [Member] Represents Common Stocks. Cost of sales Asset Acquisition [Domain] Asset Acquisition [Axis] Property, plant and equipment, net us-gaap_AssetAcquisitionConsiderationTransferred Asset Acquisition, Consideration Transferred Accrued contingent consideration, current Deferred tax asset Property, Plant, and Equipment [Policy Text Block] Machinery and Equipment [Member] Contingent consideration adjustment sodi_BusinessCombinationContingentConsiderationChangeInContingentConsiderationLiabilityAdjustments Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Adjustments 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] Issuance/sale of shares us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued Common stock, par or stated value (in dollars per share) us-gaap_DeferredCompensationArrangementWithIndividualExercisePrice Deferred Compensation Arrangement with Individual, Exercise Price (in dollars per share) Basis of Accounting, Policy [Policy Text Block] STOCKHOLDERS’ EQUITY 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 Accounts Payable and Accrued Liabilities Disclosure [Text Block] 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] Geographical [Axis] Acquisition of Micro Engineering Inc [Member] Represents the acquisition of micro engineering inc. Supplemental disclosures of cash flow data us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty Related Party Transaction, Purchases from Related Party CURRENT LIABILITIES us-gaap_GainLossOnInvestments Net realized and unrealized (gains) losses on investments Realized gain on investments us-gaap_LiabilitiesCurrent TOTAL CURRENT LIABILITIES Revenue from Contract with Customer [Policy Text Block] Supplier Concentration Risk [Member] Customer [Axis] sodi_PolicyTable Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table] Customer deposits us-gaap_ContractWithCustomerLiabilityCurrent Common Stock, Outstanding [Member] Represents information pertaining to common stock outstanding. Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Contingency adjustment Represents the amount of increase (decrease) in contingent consideration liability during the period. Customer Concentration Risk [Member] us-gaap_PaymentsToAcquireEquitySecuritiesFvNi Purchases of long-term investments Marketable securities Supplier, Three [Member] Information pertaining to suppliers. 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] Revenue Benchmark [Member] Four Suppliers [Member] Information pertaining to suppliers. Other Commitments [Table] Supplier, Four [Member] Information pertaining to suppliers. Two Suppliers [Member] Information pertaining to suppliers. Business Combination [Table Text Block] Inventories, net Inventory, Net us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Net income (loss) before income taxes us-gaap_PaymentsToAcquireMarketableSecurities Purchases of marketable securities us-gaap_CashUninsuredAmount Cash, Uninsured Amount Additional paid-in capital Debt Disclosure [Text Block] us-gaap_InventoryGross Inventory, Gross us-gaap_StockholdersEquity TOTAL STOCKHOLDERS’ EQUITY Balance Balance us-gaap_IncreaseDecreaseInContractWithCustomerLiability Customer deposits Use of Estimates, Policy [Policy Text Block] Prepaid expenses and other current assets us-gaap_CustomerRefundLiabilityCurrent Return allowance us-gaap_PaymentForContingentConsiderationLiabilityOperatingActivities Earn out payment us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property and equipment us-gaap_PaymentForContingentConsiderationLiabilityInvestingActivities Payment of contingent consideration Stock, Class of Stock [Table] UNITED STATES Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Within 30 Days After the End of Each Fiscal Quarter [Member] Related to award date. us-gaap_InventoryValuationReserves Inventory, Valuation Reserves us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table] CURRENT ASSETS Ninety Days After Agreement Date [Member] Related to ninety days after agreement date. us-gaap_AssetsCurrent TOTAL CURRENT ASSETS ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Net sales us-gaap_GrossProfit Gross profit Inventory, Policy [Policy Text Block] Marketable Securities [Table Text Block]