Common Stock (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of basic and diluted net loss per share

Basic and diluted net loss per share (in thousands, except per share amounts) are as follows:

	Three months ended
	March 31, 2020		March 31, 2019
Net loss	$	(7,595)	$	(2,921)
Weighted-average shares of common stock outstanding	16,693		16,198
Net loss per share - basic and diluted	$	(0.45)	$	(0.18)

Schedule of shares excluded from net loss per share

The following common equivalent shares as of March 31, 2020 and 2019, issuable upon exercise of stock options and warrants have been excluded from the diluted earnings per share calculation as their effect is anti-dilutive:

	March 31, 2020	March 31, 2019
Warrants to purchase common stock	1,539,926	1,625,108
Options to purchase common stock	3,961,490	4,341,116
Total	5,501,416	5,966,224