Loss Per Share of Common Stock (Details) - shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	20,362,940	6,650,971
Convertible preferred stock
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	7,442,400
Restricted stock
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	21,000	32,400
Stock options.
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	12,899,540	6,618,571