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Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Statement [Abstract]    
Net revenues $ 8,686,774us-gaap_SalesRevenueNet $ 8,093,244us-gaap_SalesRevenueNet
Costs and expenses:    
Cost of products sold 1,161,841us-gaap_CostOfGoodsSold 1,053,717us-gaap_CostOfGoodsSold
Selling and marketing 3,530,915us-gaap_SellingAndMarketingExpense 3,613,931us-gaap_SellingAndMarketingExpense
Research and development 1,859,012us-gaap_ResearchAndDevelopmentExpense 826,373us-gaap_ResearchAndDevelopmentExpense
General and administrative 1,644,141us-gaap_GeneralAndAdministrativeExpense 1,897,217us-gaap_GeneralAndAdministrativeExpense
Amortization 486,749us-gaap_AmortizationOfIntangibleAssets 293,955us-gaap_AmortizationOfIntangibleAssets
Total costs and expenses 8,682,658us-gaap_CostsAndExpenses 7,685,193us-gaap_CostsAndExpenses
Operating income 4,116us-gaap_OperatingIncomeLoss 408,051us-gaap_OperatingIncomeLoss
Interest income 56,402us-gaap_InvestmentIncomeInterest 67,343us-gaap_InvestmentIncomeInterest
Interest expense (15,550)us-gaap_InterestExpense (12,203)us-gaap_InterestExpense
Income before income taxes 44,968us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 463,191us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income tax expense (18,456)us-gaap_IncomeTaxExpenseBenefit (188,009)us-gaap_IncomeTaxExpenseBenefit
Net income 26,512us-gaap_ProfitLoss 275,182us-gaap_ProfitLoss
Net loss at subsidiary attributable to noncontrolling interests 19,769us-gaap_NetIncomeLossAttributableToNoncontrollingInterest 11,138us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income attributable to common shareholders 46,281us-gaap_NetIncomeLoss 286,320us-gaap_NetIncomeLoss
Earnings per share attributable to common shareholders    
- basic (in USD per share) $ 0.00us-gaap_EarningsPerShareBasic $ 0.02us-gaap_EarningsPerShareBasic
- diluted (in USD per share) $ 0.00us-gaap_EarningsPerShareDiluted $ 0.02us-gaap_EarningsPerShareDiluted
Weighted-average shares outstanding    
- basic (in shares) 17,012,852us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 17,907,848us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
- diluted (in shares) 17,405,019us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 18,161,680us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Comprehensive income attributable to common shareholders 46,281us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest 286,320us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Net loss at subsidiary attributable to noncontrolling interests 19,769us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest 11,138us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
Total comprehensive income $ 26,512us-gaap_ComprehensiveIncomeNetOfTax $ 275,182us-gaap_ComprehensiveIncomeNetOfTax