CONSOLIDATED INCOME STATEMENTS - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED INCOME STATEMENTS
Sales	$ 14,132,637	$ 14,378,528	$ 12,955,576	$ 13,883,961	$ 14,447,653	$ 13,743,778	$ 13,033,361	$ 12,963,652	$ 55,350,702	$ 54,188,444	$ 52,379,543
Cost of Sales	12,076,489	11,875,122	10,889,619	11,571,618	11,871,106	11,473,961	11,014,469	11,283,694	46,412,848	45,643,231	45,720,323
Gross Profit	2,056,148	2,503,406	2,065,957	2,312,343	2,576,547	2,269,817	2,018,892	1,679,958	8,937,854	8,545,213	6,659,220
Selling, General and Administrative	6,089,606	3,827,904	3,835,596	5,325,761	5,917,480	4,098,835	4,214,205	4,090,199	19,078,867	18,320,720	14,336,449
Research and Product Development	2,029,736	1,246,727	885,259	799,591	1,679,878	1,301,824	186,695	4,615,197	4,961,313	7,783,594	39,382,037
Operating Income (Loss)	(6,063,194)	(2,571,225)	(2,654,898)	(3,813,009)	(5,020,811)	(3,130,842)	(2,382,008)	(7,025,438)	(15,102,326)	(17,559,101)	(47,059,266)
Interest and Investment Income	293,238	156,672	118,151	113,815	187,144	55,263	69,633	74,215	681,876	386,257	98,101
Interest (Expense)					1,549,980	892,027	858,003	854,303		4,154,313	1,822,147
Income (Loss) Before Income Taxes	(5,769,956)	(2,414,553)	(2,536,747)	(3,699,194)	(6,383,647)	(3,967,606)	(3,170,378)	(7,805,526)	(14,420,450)	(21,327,157)	(48,783,312)
Income Tax Expense									0	0	0
Net Income (Loss)	$ (5,769,956)	$ (2,414,553)	$ (2,536,747)	$ (3,699,194)	$ (6,383,647)	$ (3,967,606)	$ (3,170,378)	$ (7,805,526)	$ (14,420,450)	$ (21,327,157)	$ (48,783,312)
Basic And Diluted Earnings (Loss) Per Share (in dollars per share)	$ (0.12)	$ (0.05)	$ (0.05)	$ (0.07)	$ (0.14)	$ (0.10)	$ (0.08)	$ (0.20)	$ (0.29)	$ (0.52)	$ (1.48)