CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenues, net	$ 4,403,247	$ 4,847,934	$ 9,333,338	$ 9,322,983
Cost of goods sold	1,130,108	1,033,089	2,238,551	2,076,730
Gross profit	3,273,139	3,814,845	7,094,787	7,246,253
Operating expenses:
Sales, general, and administration	10,619,006	6,865,442	20,297,558	13,029,054
Research and development	13,841,193	24,190,714	28,938,210	42,367,549
Depreciation and amortization	24,262	14,280	43,859	27,852
Total operating expense	24,484,461	31,070,436	49,279,627	55,424,455
Operating loss	(21,211,322)	(27,255,591)	(42,184,840)	(48,178,202)
Other income:
Miscellaneous income	114,320	25,585	155,937	44,098
Accreted interest	2,863	2,560	5,399	12,402
Total other income	117,183	28,145	161,336	56,500
Loss before taxes	(21,094,139)	(27,227,446)	(42,023,504)	(48,121,702)
Provision for income taxes
Net loss	$ (21,094,139)	$ (27,227,446)	$ (42,023,504)	$ (48,121,702)
Net loss per share, basic and diluted (in dollars per share)	$ (0.11)	$ (0.16)	$ (0.21)	$ (0.29)
Weighted average number of common shares outstanding (in shares)	196,325,715	172,782,264	195,613,639	168,734,760