Summary of Significant Accounting Policies (Details) - shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,700,314	21,975,950
Stock Options to Purchase Common Stock [Member]
Net Loss per Common Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,137,775	3,707,719
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)	562,539	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