CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Revenues, net	$ 4,250,433	$ 4,403,247	$ 8,235,897	$ 9,333,338
Cost of goods sold	681,725	1,130,108	1,341,360	2,238,551
Gross profit	3,568,708	3,273,139	6,894,537	7,094,787
Operating expenses:
Sales, general, and administration	14,628,927	10,619,006	31,466,544	20,297,558
Research and development	8,716,395	13,841,193	16,441,235	28,938,210
Depreciation and amortization	53,189	24,262	102,888	43,859
Total operating expense	23,398,511	24,484,461	48,010,667	49,279,627
Operating loss	(19,829,803)	(21,211,322)	(41,116,130)	(42,184,840)
Other income:
Miscellaneous income	149,054	114,320	275,022	155,937
Accreted interest	3,832	2,863	7,699	5,399
Total other income	152,886	117,183	282,721	161,336
Loss before taxes	(19,676,917)	(21,094,139)	(40,833,409)	(42,023,504)
Net loss	$ (19,676,917)	$ (21,094,139)	$ (40,833,409)	$ (42,023,504)
Net loss per share, basic and diluted (in dollars per share)	$ (0.10)	$ (0.11)	$ (0.20)	$ (0.21)
Weighted average number of common shares outstanding (in shares)	203,384,610	196,325,715	200,602,778	195,613,639