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Unaudited Quarterly Financial Data Unaudited (Details) (USD $)	3 Months Ended												12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Product sales	$ 2,205,275us-gaap_SalesRevenueGoodsNet	$ 1,770,129us-gaap_SalesRevenueGoodsNet	$ 1,539,719us-gaap_SalesRevenueGoodsNet	$ 2,081,752us-gaap_SalesRevenueGoodsNet	$ 1,559,248us-gaap_SalesRevenueGoodsNet	$ 1,234,701us-gaap_SalesRevenueGoodsNet	$ 1,366,493us-gaap_SalesRevenueGoodsNet	$ 1,846,734us-gaap_SalesRevenueGoodsNet	$ 1,420,951us-gaap_SalesRevenueGoodsNet	$ 1,076,749us-gaap_SalesRevenueGoodsNet	$ 1,175,126us-gaap_SalesRevenueGoodsNet	$ 1,717,109us-gaap_SalesRevenueGoodsNet	$ 7,596,874us-gaap_SalesRevenueGoodsNet	$ 6,007,176us-gaap_SalesRevenueGoodsNet	$ 5,389,935us-gaap_SalesRevenueGoodsNet
Gross margin	1,342,722us-gaap_GrossProfit	1,077,896us-gaap_GrossProfit	878,523us-gaap_GrossProfit	1,149,895us-gaap_GrossProfit	607,644us-gaap_GrossProfit	615,717us-gaap_GrossProfit	783,677us-gaap_GrossProfit	1,053,567us-gaap_GrossProfit	750,215us-gaap_GrossProfit	620,958us-gaap_GrossProfit	670,518us-gaap_GrossProfit	1,012,568us-gaap_GrossProfit	4,449,037us-gaap_GrossProfit	3,060,606us-gaap_GrossProfit	3,054,259us-gaap_GrossProfit
Product development expenses	462,965us-gaap_ResearchAndDevelopmentExpense	361,232us-gaap_ResearchAndDevelopmentExpense	760,672us-gaap_ResearchAndDevelopmentExpense	594,209us-gaap_ResearchAndDevelopmentExpense	325,010us-gaap_ResearchAndDevelopmentExpense	290,853us-gaap_ResearchAndDevelopmentExpense	271,858us-gaap_ResearchAndDevelopmentExpense	266,479us-gaap_ResearchAndDevelopmentExpense	234,316us-gaap_ResearchAndDevelopmentExpense	223,771us-gaap_ResearchAndDevelopmentExpense	211,706us-gaap_ResearchAndDevelopmentExpense	247,807us-gaap_ResearchAndDevelopmentExpense	2,179,079us-gaap_ResearchAndDevelopmentExpense	1,154,200us-gaap_ResearchAndDevelopmentExpense	917,600us-gaap_ResearchAndDevelopmentExpense
Net operating income (loss)	198,856us-gaap_OperatingIncomeLoss	40,853us-gaap_OperatingIncomeLoss	(458,667)us-gaap_OperatingIncomeLoss	12,561us-gaap_OperatingIncomeLoss	(209,975)us-gaap_OperatingIncomeLoss	(159,967)us-gaap_OperatingIncomeLoss	23,722us-gaap_OperatingIncomeLoss	326,666us-gaap_OperatingIncomeLoss	12,497us-gaap_OperatingIncomeLoss	(86,126)us-gaap_OperatingIncomeLoss	37,397us-gaap_OperatingIncomeLoss	281,233us-gaap_OperatingIncomeLoss	(206,398)us-gaap_OperatingIncomeLoss	(19,552)us-gaap_OperatingIncomeLoss	245,001us-gaap_OperatingIncomeLoss
Net income (loss)	$ 130,626us-gaap_NetIncomeLoss	$ 10,330us-gaap_NetIncomeLoss	$ (294,781)us-gaap_NetIncomeLoss	$ (13,335)us-gaap_NetIncomeLoss	$ (150,703)us-gaap_NetIncomeLoss	$ 57,336us-gaap_NetIncomeLoss	$ 6,452us-gaap_NetIncomeLoss	$ 204,310us-gaap_NetIncomeLoss	$ (16,862)us-gaap_NetIncomeLoss	$ (63,574)us-gaap_NetIncomeLoss	$ 15,187us-gaap_NetIncomeLoss	$ 154,761us-gaap_NetIncomeLoss	$ (167,159)us-gaap_NetIncomeLoss	$ 117,395us-gaap_NetIncomeLoss	$ 89,512us-gaap_NetIncomeLoss
Earnings Per Share [Abstract]
Basic (in dollar per share)	$ 0.04us-gaap_EarningsPerShareBasic	$ 0.00us-gaap_EarningsPerShareBasic	$ (0.10)us-gaap_EarningsPerShareBasic	$ 0.00us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic	$ 0.02us-gaap_EarningsPerShareBasic	$ 0.00us-gaap_EarningsPerShareBasic	$ 0.07us-gaap_EarningsPerShareBasic	$ (0.01)us-gaap_EarningsPerShareBasic	$ (0.02)us-gaap_EarningsPerShareBasic	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.05us-gaap_EarningsPerShareBasic	$ (0.06)us-gaap_EarningsPerShareBasic	$ 0.04us-gaap_EarningsPerShareBasic	$ 0.03us-gaap_EarningsPerShareBasic
Diluted (in dollar per share)	$ 0.04us-gaap_EarningsPerShareDiluted	$ 0.00us-gaap_EarningsPerShareDiluted	$ (0.10)us-gaap_EarningsPerShareDiluted	$ 0.00us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted	$ 0.02us-gaap_EarningsPerShareDiluted	$ 0.00us-gaap_EarningsPerShareDiluted	$ 0.07us-gaap_EarningsPerShareDiluted	$ (0.01)us-gaap_EarningsPerShareDiluted	$ (0.02)us-gaap_EarningsPerShareDiluted	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.05us-gaap_EarningsPerShareDiluted	$ (0.06)us-gaap_EarningsPerShareDiluted	$ 0.04us-gaap_EarningsPerShareDiluted	$ 0.03us-gaap_EarningsPerShareDiluted

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