Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

The following are selected quarterly financial data for the years ended December 31, 2015 and 2014:

	Quarter Ended
	March 31, 2015			June 30, 2015			September 30, 2015			December 31, 2015
Revenues	$	1,658,332		$	2,082,504		$	2,044,967		$	2,092,604
Loss from operations		(31,021,549	)		(7,369,416	)		(4,843,743	)		(13,246,160	)
Net loss		(31,848,223	)		(8,128,693	)		(5,543,124	)		(13,460,990	)
Net loss per common share (basic and diluted)	$	(0.30	)	$	(0.06	)	$	(0.04	)	$	(0.10	)
Weighted average common shares (basic and diluted)		107,934,493			128,351,482			128,392,413			128,501,098

	Quarter Ended
	March 31, 2014			June 30, 2014			September 30, 2014			December 31, 2014
Revenues	$	1,284,633		$	4,801,285		$	1,764,864		$	1,992,699
Loss from operations		(4,753,343	)		(1,544,787	)		(4,753,031	)		(4,811,088	)
Net loss		(5,563,936	)		(1,895,785	)		(5,580,143	)		(5,688,870	)
Net loss per common share (basic and diluted)	$	(0.06	)	$	(0.02	)	$	(0.06	)	$	(0.07	)
Weighted average common shares (basic and diluted)		85,917,592			85,963,836			86,004,857			86,010,499