Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 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):

	Three Months Ended March 31,
		2017	2016
Options to purchase common stock		4,380,299	3,371,795
Warrants to purchase common stock		1,336,894	1,336,894
Total		5,717,193	4,708,689