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Condensed Balance Sheets (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
Feb. 28, 2014
CURRENT ASSETS    
Cash and cash equivalents $ 698us-gaap_CashAndCashEquivalentsAtCarryingValue $ 625us-gaap_CashAndCashEquivalentsAtCarryingValue
Treasury bills and certificates of deposit 6,720sodi_TreasuryBillsAndCertificatesOfDepositCurrent 6,261sodi_TreasuryBillsAndCertificatesOfDepositCurrent
Accounts receivable, less allowance for doubtful accounts of $2 385us-gaap_AccountsReceivableNetCurrent 785us-gaap_AccountsReceivableNetCurrent
Inventories, net (Note 6) 4,480us-gaap_InventoryNet 4,316us-gaap_InventoryNet
Prepaid expenses and other current assets 141us-gaap_PrepaidExpenseAndOtherAssetsCurrent 155us-gaap_PrepaidExpenseAndOtherAssetsCurrent
TOTAL CURRENT ASSETS 12,424us-gaap_AssetsCurrent 12,142us-gaap_AssetsCurrent
PROPERTY, PLANT AND EQUIPMENT, net 493us-gaap_PropertyPlantAndEquipmentNet 558us-gaap_PropertyPlantAndEquipmentNet
OTHER ASSETS 10us-gaap_OtherAssetsNoncurrent 7us-gaap_OtherAssetsNoncurrent
TOTAL ASSETS 12,927us-gaap_Assets 12,707us-gaap_Assets
CURRENT LIABILITIES    
Accounts payable - Post-petition 385us-gaap_AccountsPayableCurrent 307us-gaap_AccountsPayableCurrent
Accounts payable - Pre-petition    8sodi_PrePetitionLiabilitiesCurrent
Customer deposits 97us-gaap_CustomerDepositsCurrent 94us-gaap_CustomerDepositsCurrent
Accrued expenses and other liabilities (Note 9) 440us-gaap_AccruedLiabilitiesCurrent 605us-gaap_AccruedLiabilitiesCurrent
TOTAL CURRENT LIABILITIES 922us-gaap_LiabilitiesCurrent 1,014us-gaap_LiabilitiesCurrent
TOTAL LIABILITIES 922us-gaap_Liabilities 1,014us-gaap_Liabilities
COMMITMENTS AND CONTINGENCIES      
STOCKHOLDERS' EQUITY    
Preferred stock, $.01 par value, authorized 500,000 shares, none issued      
Common stock, $.01 par value, authorized 10,000,000 shares, 2,185,832 shares issued and outstanding, net of 273,230 shares of treasury stock at Aug 31, 2014 2,177,832 shares issued and outstanding, net of 273,230 shares of treasury stock at Feb 28, 2014 23us-gaap_CommonStockValue 23us-gaap_CommonStockValue
Additional paid-in capital 2,749us-gaap_AdditionalPaidInCapital 2,743us-gaap_AdditionalPaidInCapital
Accumulated other comprehensive income 14us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax 14us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
Retained earnings 9,494us-gaap_RetainedEarningsAccumulatedDeficit 9,188us-gaap_RetainedEarningsAccumulatedDeficit
Less treasury stock (275)us-gaap_TreasuryStockValue (275)us-gaap_TreasuryStockValue
TOTAL STOCKHOLDERS' EQUITY 12,005us-gaap_StockholdersEquity 11,693us-gaap_StockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 12,927us-gaap_LiabilitiesAndStockholdersEquity $ 12,707us-gaap_LiabilitiesAndStockholdersEquity