Basis of Presentation and Summary of Significant Accounting Policies - Anti-dilutive Share Equivalents (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	11,617,078	3,763,695
Options to purchase Common Stock
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	1,015,418	83,345
Warrants to purchase Common Stock
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	10,589,482	3,649,341
Restricted Stock Units
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	11,301	30,132
Series A Convertible Preferred Stock
Net Loss Per Share
Antidilutive securities excluded from computation of earnings per share (in shares)	877	877