Selected Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The following represents the Company’s unaudited quarterly results for the years ended December 31:

	Quarter Ended
	2015
	March 31		June 30		September 30		December 31
Revenues	$	2,917	$	2,500	$	2,500	$	2,500
Operating loss	$	(4,612,980)	$	(4,994,722)	$	(5,197,520)	$	(4,351,306)
Net loss	$	(5,053,145)	$	(5,448,037)	$	(5,637,568)	$	(4,765,151)
Net loss per share - basic and diluted	$	(0.06)	$	(0.06)	$	(0.06)	$	(0.05)

	Quarter Ended
	2014
	March 31		June 30		September 30		December 31
Revenues	$	4,167	$	5,000	$	5,000	$	4,666
Operating loss	$	(5,176,901)	$	(3,511,238)	$	(4,106,745)	$	(4,640,965)
Net loss	$	(5,919,057)	$	(6,751,282)	$	(4,455,237)	$	(5,503,168)
Net loss per share - basic and diluted	$	(0.07)	$	(0.08)	$	(0.05)	$	(0.06)