Earnings Per Common Share ("EPS") (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Components of Basic and Diluted EPS Computations

The following tables summarize the components of the basic and diluted EPS computations (in thousands, except per share amounts):

	Year Ended December 31,
	2019			2018
EPS — basic and diluted:
Net loss (numerator)	$	(51,903	)	$	(86,975	)
Weighted average common shares (denominator)		195,584			144,136
Net loss per share	$	(0.27	)	$	(0.60	)

Potential Dilutive Securities Outstanding that are Considered Antidilutive

Potentially dilutive securities outstanding that are considered antidilutive are summarized as follows (in shares):

	Year Ended December 31,
	2019		2018
Exercise of common stock options		14,135,681		10,976,118
Conversion of convertible notes payable to former related    party into common stock		14,000,000		21,909,541
Exercise of warrants associated with public offering		7,250,000		26,666,667
Exercise of warrants associated with Midcap Credit Facility		1,171,614		—
Conversion of convertible notes into common stock		1,666,667		3,629,627
Vesting of restricted stock units		1,057,047		691,266
Employee stock purchase plan		369,979		307,395
Exercise of common stock warrants		31,851		31,851
Exercise of warrants associated with direct placement		—		14,000,000
Total		39,682,839		78,212,465