CONSOLIDATED INCOME STATEMENTS (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, 2014	Dec. 31, 2013	Dec. 31, 2012
CONSOLIDATED INCOME STATEMENTS
Sales	$ 14,447,653us-gaap_SalesRevenueGoodsNet	$ 13,743,778us-gaap_SalesRevenueGoodsNet	$ 13,033,361us-gaap_SalesRevenueGoodsNet	$ 12,963,652us-gaap_SalesRevenueGoodsNet	$ 13,964,624us-gaap_SalesRevenueGoodsNet	$ 13,094,381us-gaap_SalesRevenueGoodsNet	$ 12,984,164us-gaap_SalesRevenueGoodsNet	$ 12,336,374us-gaap_SalesRevenueGoodsNet	$ 54,188,444us-gaap_SalesRevenueGoodsNet	$ 52,379,543us-gaap_SalesRevenueGoodsNet	$ 49,842,392us-gaap_SalesRevenueGoodsNet
Cost of Sales	11,871,106us-gaap_CostOfGoodsSold	11,473,961us-gaap_CostOfGoodsSold	11,014,469us-gaap_CostOfGoodsSold	11,283,694us-gaap_CostOfGoodsSold	11,904,730us-gaap_CostOfGoodsSold	11,461,100us-gaap_CostOfGoodsSold	11,299,099us-gaap_CostOfGoodsSold	11,055,394us-gaap_CostOfGoodsSold	45,643,231us-gaap_CostOfGoodsSold	45,720,323us-gaap_CostOfGoodsSold	43,148,965us-gaap_CostOfGoodsSold
Gross Profit	2,576,547us-gaap_GrossProfit	2,269,817us-gaap_GrossProfit	2,018,892us-gaap_GrossProfit	1,679,958us-gaap_GrossProfit	2,059,894us-gaap_GrossProfit	1,633,281us-gaap_GrossProfit	1,685,065us-gaap_GrossProfit	1,280,980us-gaap_GrossProfit	8,545,213us-gaap_GrossProfit	6,659,220us-gaap_GrossProfit	6,693,427us-gaap_GrossProfit
Selling, General and Administrative	5,917,480	4,098,835	4,214,205	4,090,199	3,795,325	3,386,367	3,237,974	3,916,783	18,320,720	14,336,449	12,683,860
Research and Product Development	1,679,878us-gaap_ResearchAndDevelopmentExpense	1,301,824us-gaap_ResearchAndDevelopmentExpense	186,695us-gaap_ResearchAndDevelopmentExpense	4,615,197us-gaap_ResearchAndDevelopmentExpense	5,793,579us-gaap_ResearchAndDevelopmentExpense	10,611,219us-gaap_ResearchAndDevelopmentExpense	10,222,721us-gaap_ResearchAndDevelopmentExpense	12,754,518us-gaap_ResearchAndDevelopmentExpense	7,783,594us-gaap_ResearchAndDevelopmentExpense	39,382,037us-gaap_ResearchAndDevelopmentExpense	48,271,649us-gaap_ResearchAndDevelopmentExpense
Operating Income (Loss)	(5,020,811)us-gaap_OperatingIncomeLoss	(3,130,842)us-gaap_OperatingIncomeLoss	(2,382,008)us-gaap_OperatingIncomeLoss	(7,025,438)us-gaap_OperatingIncomeLoss	(7,529,010)us-gaap_OperatingIncomeLoss	(12,364,305)us-gaap_OperatingIncomeLoss	(11,775,630)us-gaap_OperatingIncomeLoss	(15,390,321)us-gaap_OperatingIncomeLoss	(17,559,101)us-gaap_OperatingIncomeLoss	(47,059,266)us-gaap_OperatingIncomeLoss	(54,262,082)us-gaap_OperatingIncomeLoss
Interest and Investment Income, net	187,144	55,263	69,633	74,215	69,317	13,546	4,566	10,672	386,257	98,101	241,518
Interest (Expense)	1,549,980us-gaap_InterestIncomeExpenseNet	892,027us-gaap_InterestIncomeExpenseNet	858,003us-gaap_InterestIncomeExpenseNet	854,303us-gaap_InterestIncomeExpenseNet	872,412us-gaap_InterestIncomeExpenseNet	857,505us-gaap_InterestIncomeExpenseNet	92,155us-gaap_InterestIncomeExpenseNet	75us-gaap_InterestIncomeExpenseNet	4,154,313us-gaap_InterestIncomeExpenseNet	1,822,147us-gaap_InterestIncomeExpenseNet	951us-gaap_InterestIncomeExpenseNet
Income (Loss) Before Income Taxes	(6,383,647)	(3,967,606)	(3,170,378)	(7,805,526)	(8,332,105)	(13,208,264)	(11,863,219)	(15,379,724)	(21,327,157)	(48,783,312)	(54,021,515)
Income Tax Expense									0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit
Net Income (Loss)	$ (6,383,647)us-gaap_NetIncomeLoss	$ (3,967,606)us-gaap_NetIncomeLoss	$ (3,170,378)us-gaap_NetIncomeLoss	$ (7,805,526)us-gaap_NetIncomeLoss	$ (8,332,105)us-gaap_NetIncomeLoss	$ (13,208,264)us-gaap_NetIncomeLoss	$ (11,863,219)us-gaap_NetIncomeLoss	$ (15,379,724)us-gaap_NetIncomeLoss	$ (21,327,157)us-gaap_NetIncomeLoss	$ (48,783,312)us-gaap_NetIncomeLoss	$ (54,021,515)us-gaap_NetIncomeLoss
Basic And Diluted Earnings (Loss) Per Share (in dollars per share)	$ (0.14)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.10)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.08)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.20)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.21)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.34)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.38)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.72)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.52)us-gaap_EarningsPerShareBasicAndDiluted	$ (1.48)us-gaap_EarningsPerShareBasicAndDiluted	$ (2.65)us-gaap_EarningsPerShareBasicAndDiluted

Total costs related to goods produced and sold during the reporting period.

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