Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Securities Not Included in Diluted per Share Calculations

Securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in shares):

	Nine Months Ended September 30,
		2017	2016
Options to purchase common stock		5,865,766	4,692,623
Warrants to purchase common stock		1,336,894	1,336,894
Total		7,202,660	6,029,517