Net Loss Per Common Share

Basic and diluted net loss per common share is determined by dividing net loss by the weighted average common shares outstanding during the period. For the periods where there is a net loss, shares underlying stock options and RSUs have been excluded from the calculation of diluted net loss per common share because the effect of including such shares would be anti-dilutive. Therefore, the weighted average common shares used to calculate both basic and diluted net loss per common share would be the same. The following table sets forth the computation of basic and diluted net loss per common share for the periods indicated:



	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
Basic and diluted net loss per common share calculation:
Net loss	$	(14,443	)	$	(13,209	)	$	(26,944	)	$	(26,282	)
Weighted average common shares outstanding - basic and dilutive	41,477			36,188			41,452			36,171
Net loss per share of common stock - basic and diluted	$	(0.35	)	$	(0.37	)	$	(0.65	)	$	(0.73	)

The following potentially dilutive securities have been excluded from the computations of diluted weighted average common shares outstanding for the periods presented, as the effect of including such shares would be anti-dilutive:



	Three Months Ended June 30,		Six Months Ended June 30,
	2019	2018	2019	2018
Stock options outstanding	5,690	4,818	5,690	4,818
Restricted stock units	635	199	635	199
Total	6,325	5,017	6,325	5,017