Loss Per Share of Common Stock (Details) - shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	5,574,470	5,090,735
Convertible preferred stock
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	915,000	1,860,600
Restricted stock
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	37,000	5,250
Stock options.
Loss per share of common stock
Antidilutive securities excluded from the computation of diluted weighted average shares outstanding (in shares)	4,622,470	3,224,885