Summary of Significant Accounting Policies - Net Loss per Common Share (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Potentially dilutive common stock equivalents excluded from calculation of diluted net income per common share	561,654	90,136
Convertible preferred stock
Class of Stock [Line Items]
Potentially dilutive common stock equivalents excluded from calculation of diluted net income per common share	478,184	0
Options
Class of Stock [Line Items]
Potentially dilutive common stock equivalents excluded from calculation of diluted net income per common share	38,936	44,199
Warrants
Class of Stock [Line Items]
Potentially dilutive common stock equivalents excluded from calculation of diluted net income per common share	44,534	45,937