Net Loss per Common Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Calculation of Net Loss Per Share

A summary of the Company’s calculation of net loss per share is as follows (in thousands except per share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Net loss	$	(2,398	)	$	(3,530	)	$	(14,210	)	$	(7,247	)
Shares used in the calculation of basic and diluted net loss per share		22,396			17,640			21,275			17,422
Diluted shares used in the calculation of net loss per share		22,396			17,640			21,275			17,422
Net loss per share - basic and diluted	$	(0.11	)	$	(0.20	)	$	(0.67	)	$	(0.42	)

Schedule of Anti-dilutive Shares Excluded from Computation of Diluted Net Loss Per Share

The shares of the Company’s common stock issuable upon the exercise of convertible securities, stock options and vesting of restricted stock that were excluded from the calculation of diluted net loss per share because their effect would have been antidilutive are as follows:

	Period Ended
	June 30,
	2020		2019
Stock options		2,006,221		1,519,713
Restricted stock		70,992		262,732
Convertible Debentures		—		1,742,500
Total		2,077,213		3,524,945