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Condensed Consolidated Balance Sheets (USD $)
Nov. 30, 2014
Feb. 28, 2014
Current Assets:    
Cash and cash equivalents $ 2,450,848us-gaap_CashAndCashEquivalentsAtCarryingValue $ 3,232,021us-gaap_CashAndCashEquivalentsAtCarryingValue
Marketable Securities 1,637,715us-gaap_MarketableSecuritiesCurrent 630,794us-gaap_MarketableSecuritiesCurrent
Accounts receivable (less allowance of $38,000 and $32,000 at August 31 and February 28, respectively) 929,584us-gaap_AccountsReceivableNetCurrent 860,296us-gaap_AccountsReceivableNetCurrent
Inventories, net 2,152,335us-gaap_InventoryNet 1,674,815us-gaap_InventoryNet
Prepaid expenses and other current assets 81,640us-gaap_PrepaidExpenseAndOtherAssetsCurrent 160,373us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Total current assets 7,252,122us-gaap_AssetsCurrent 6,558,299us-gaap_AssetsCurrent
Land 250,000us-gaap_Land 250,000us-gaap_Land
Buildings, net 2,029,688SOTK_BuildingsAndImprovementsNet 2,071,875SOTK_BuildingsAndImprovementsNet
Equipment, furnishings and leasehold improvements, net 606,875SOTK_EquipmentFurnishingsLeaseholdImprovementsNet 637,138SOTK_EquipmentFurnishingsLeaseholdImprovementsNet
Intangible and other assets, net 178,906us-gaap_IntangibleAssetsNetExcludingGoodwill 171,828us-gaap_IntangibleAssetsNetExcludingGoodwill
Deferred tax asset 90,021us-gaap_DeferredTaxAssetsNetNoncurrent 90,021us-gaap_DeferredTaxAssetsNetNoncurrent
TOTAL ASSETS 10,407,612us-gaap_Assets 9,779,161us-gaap_Assets
Current Liabilities:    
Accounts payable 688,065us-gaap_AccountsPayableCurrent 556,194us-gaap_AccountsPayableCurrent
Accrued expenses 784,963us-gaap_AccruedLiabilitiesCurrent 565,121us-gaap_AccruedLiabilitiesCurrent
Customer deposits 327,215us-gaap_CustomerAdvancesAndDepositsCurrent 362,846us-gaap_CustomerAdvancesAndDepositsCurrent
Current maturities of long term debt 172,042us-gaap_LongTermDebtCurrent 191,466us-gaap_LongTermDebtCurrent
Income taxes payable 167,292us-gaap_AccruedIncomeTaxesCurrent 129,398us-gaap_AccruedIncomeTaxesCurrent
Total current liabilities 2,139,577us-gaap_LiabilitiesCurrent 1,805,025us-gaap_LiabilitiesCurrent
Long term debt, less current maturities 1,354,570us-gaap_LongTermDebtNoncurrent 1,479,058us-gaap_LongTermDebtNoncurrent
Total liabilities 3,494,147us-gaap_Liabilities 3,284,083us-gaap_Liabilities
Commitments and Contingencies      
Stockholders' Equity    
Common stock, $.01 par value; 25,000,000 shares authorized, 14,718,162 and 14,708,518 shares issued and outstanding, at August 31 and February 28, respectively 147,182us-gaap_CommonStockValue 147,085us-gaap_CommonStockValue
Additional paid-in capital 8,760,073us-gaap_AdditionalPaidInCapital 8,725,883us-gaap_AdditionalPaidInCapital
Accumulated deficit (1,993,790)us-gaap_RetainedEarningsAccumulatedDeficit (2,377,890)us-gaap_RetainedEarningsAccumulatedDeficit
Total stockholders' equity 6,913,465us-gaap_StockholdersEquity 6,495,078us-gaap_StockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 10,407,612us-gaap_LiabilitiesAndStockholdersEquity $ 9,779,161us-gaap_LiabilitiesAndStockholdersEquity