Summary of Significant Accounting Policies - Schedule of Potentially Dilutive Shares (Details) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	2,802,174	1,804,473
Warrants to purchase Series C-1 Preferred | Warrant liability
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	14,033	14,033
Warrants to purchase common stock associated with Loan Agreement | Warrant liability
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	122,435	0
Warrants to purchase common stock associated with June 2016 Public Offering | Warrant liability
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive securities (in shares)	4,218,750	4,218,750