Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of Potentially Dilutive Securities Outstanding Excluded from Diluted Loss Per Share Calculation

The following potentially dilutive securities outstanding as of March 31, 2019 and 2018 have been excluded from the denominator of the diluted loss per share of common stock outstanding calculation (in thousands):

	March 31,
	2019		2018
Stock options		2,670		2,669
Non-vested restricted stock awards		1		13
Non-vested restricted stock units		166		-
Convertible preferred stock warrants		-		105
Common stock warrants		105		-
Shares of convertible preferred stock “as-converted”		-		10,994