Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Summary of Potentially Dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	32,885,473	13,048,405
Options to purchase common stock
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	6,142,586	8,191,963
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)	237,724	1,461,588
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