Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Summary of Potentially Dilutive Securities (Details) - shares	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	32,918,568	10,123,811
Options to purchase common stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	6,070,801	6,225,562
Unvested restricted stock awards
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	78,300	146,800
Unvested restricted stock units
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	342,604	503,395
Warrants to purchase common stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	26,426,863	3,248,054