Condensed Statements of Operations (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Revenue	$ 107,707	$ 69,127	$ 396,206	$ 156,134
Cost of revenue	1,976,501	568,899	4,438,211	1,071,357
Gross profit	(1,868,794)	(499,772)	(4,042,005)	(915,223)
Operating expenses:
Research and development	856,764	1,398,500	3,241,727	5,506,596
Selling, general and administrative	3,480,689	3,469,435	12,440,457	10,215,501
Operating loss	(6,206,247)	(5,367,707)	(19,724,189)	(16,637,320)
Interest income	2,508	5,875	7,323	28,280
Interest expense	(222,758)		(563,143)
Benefit (change) in fair value of warrant liability			(89,859)
Write-off of unamortized loan costs	(983,330)		(983,330)
Other income	5,400	4,954	15,400	14,950
Net loss:	$ (7,404,427)	$ (5,356,878)	$ (21,337,798)	$ (16,594,090)
Basic and diluted net loss per common share	$ (0.17)	$ (0.17)	$ (0.51)	$ (0.55)
Basic and diluted weighted average number of common shares outstanding	43,121,179	30,667,371	41,828,144	30,438,669