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Income Taxes - Income tax reconciliation (Details) (USD $)
12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Income tax (benefit) reconciliation:    
Expected federal income tax $ 288,945us-gaap_CurrentFederalTaxExpenseBenefit $ 208,088us-gaap_CurrentFederalTaxExpenseBenefit
State tax, net of federal 31,371us-gaap_CurrentStateAndLocalTaxExpenseBenefit 12,100us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Permanent timing difference 54,218us-gaap_IncomeTaxReconciliationNondeductibleExpense (6,771)us-gaap_IncomeTaxReconciliationNondeductibleExpense
Research and development tax credits 155,110us-gaap_IncomeTaxReconciliationTaxCreditsResearch 82,927us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Income tax $ 219,424us-gaap_IncomeTaxExpenseBenefit $ 130,490us-gaap_IncomeTaxExpenseBenefit