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Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Income Statement [Abstract]
Net Sales	$ 2,851,906us-gaap_Revenues	$ 2,650,225us-gaap_Revenues	$ 7,906,332us-gaap_Revenues	$ 7,561,998us-gaap_Revenues
Cost of Goods Sold	1,452,217us-gaap_CostOfRevenue	1,435,055us-gaap_CostOfRevenue	4,056,590us-gaap_CostOfRevenue	3,963,181us-gaap_CostOfRevenue
Gross Profit	1,399,689us-gaap_GrossProfit	1,215,170us-gaap_GrossProfit	3,849,742us-gaap_GrossProfit	3,598,817us-gaap_GrossProfit
Operating Expenses
Research and product development costs	249,292us-gaap_ResearchAndDevelopmentExpense	204,738us-gaap_ResearchAndDevelopmentExpense	740,122us-gaap_ResearchAndDevelopmentExpense	661,975us-gaap_ResearchAndDevelopmentExpense
Marketing and selling expenses	549,285us-gaap_SellingAndMarketingExpense	462,685us-gaap_SellingAndMarketingExpense	1,646,979us-gaap_SellingAndMarketingExpense	1,451,310us-gaap_SellingAndMarketingExpense
General and administrative costs	276,375us-gaap_GeneralAndAdministrativeExpense	225,301us-gaap_GeneralAndAdministrativeExpense	769,639us-gaap_GeneralAndAdministrativeExpense	747,896us-gaap_GeneralAndAdministrativeExpense
Rental operations expense	36,437us-gaap_OwnedPropertyManagementCosts	48,791us-gaap_OwnedPropertyManagementCosts	118,011us-gaap_OwnedPropertyManagementCosts	118,890us-gaap_OwnedPropertyManagementCosts
Total Operating Expenses	1,111,389us-gaap_OperatingExpenses	941,515us-gaap_OperatingExpenses	3,274,751us-gaap_OperatingExpenses	2,980,071us-gaap_OperatingExpenses
Operating Income	288,300us-gaap_OperatingIncomeLoss	273,655us-gaap_OperatingIncomeLoss	574,991us-gaap_OperatingIncomeLoss	618,746us-gaap_OperatingIncomeLoss
Interest Expense	(15,754)us-gaap_InterestExpense	(27,152)us-gaap_InterestExpense	(49,135)us-gaap_InterestExpense	(82,396)us-gaap_InterestExpense
Other (expense) income	6,169us-gaap_NonoperatingIncomeExpense	18,169us-gaap_NonoperatingIncomeExpense	23,215us-gaap_NonoperatingIncomeExpense	(5,405)us-gaap_NonoperatingIncomeExpense
Income form Operations Before Income Taxes	278,715us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	264,672us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	549,071us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	530,945us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income Tax Expense	76,283us-gaap_IncomeTaxExpenseBenefit	93,425us-gaap_IncomeTaxExpenseBenefit	164,971us-gaap_IncomeTaxExpenseBenefit	180,521us-gaap_IncomeTaxExpenseBenefit
Net Income	$ 202,432us-gaap_ProfitLoss	$ 171,247us-gaap_ProfitLoss	$ 384,100us-gaap_ProfitLoss	$ 350,424us-gaap_ProfitLoss
Basic Earnings Per Share	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.03us-gaap_EarningsPerShareBasic	$ 0.02us-gaap_EarningsPerShareBasic
Diluted Earnings Per Share	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.03us-gaap_EarningsPerShareDiluted	$ 0.02us-gaap_EarningsPerShareDiluted
Weighted Average Shares - Basic	14,718,162us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	14,508,507us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	14,713,893us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	14,504,836us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Weighted Average Shares - Diluted	14,958,070us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	14,775,422us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	14,942,137us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	14,710,838us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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The aggregate cost of goods produced and sold and services rendered during the reporting period.

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