Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements - Loss Per Share (Details) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	13,048,405	9,898,322
Employee stock options
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	8,191,963	8,289,605
Restricted stock awards
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	146,800	146,800
Restricted stock units
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	1,461,588	1,461,917
Warrants
Net Earnings per Share
Securities excluded from diluted loss per share calculation (in shares)	3,248,054	0