Summary of Significant Accounting Policies (Details) - shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,711,216	22,495,252
Stock Options to Purchase Common Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,166,511	4,227,022
Convertible Preferred Stock to Purchase Common Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	17,497,815
Warrants to Purchase Common Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	544,705	99,401
Warrants to Purchase Series C Preferred Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	338,534
Warrants to Purchase Series C-1 Preferred Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	332,480