CONDENSED STATEMENT OF STOCKHOLDERS’ DEFICIT - 3 months ended Mar. 31, 2017 - USD ($)	Total	Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2016	$ (2,845,550)	$ 0	$ 229,383	$ 133,327,491	$ (136,402,424)
Balance (in shares) at Dec. 31, 2016		0	229,381,059
Net loss	(2,529,710)	$ 0	$ 0	0	(2,529,710)
Employee stock purchase plan	4,920	$ 0	$ 55	4,865	0
Employee stock purchase plan (in shares)		0	54,667
Stock-based compensation expense	355,941	$ 0	$ 0	355,941	0
Balance at Mar. 31, 2017	$ (5,014,399)	$ 0	$ 229,438	$ 133,688,297	$ (138,932,134)
Balance (in shares) at Mar. 31, 2017		0	229,435,726