3. Net Loss Per Common Share

Basic and diluted net income (loss) per common share is determined by dividing net income (loss) by the weighted average common shares outstanding during the period. For the periods where there is a net loss, stock options and RSUs have been excluded from the calculation of diluted net loss per common share because their effect 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 income (loss) per common share for the periods indicated:



	Three months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016

Basic and diluted net loss per common share calculation:
Net loss	$	(22,204	)	$	(29,945	)	$	(65,326	)	$	(66,246	)
Weighted average common shares outstanding - basic and diluted	35,858			35,392			35,831			35,324
Net loss per share of common stock - basic and diluted	$	(0.62	)	$	(0.85	)	$	(1.82	)	$	(1.88	)

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



	Three months ended June 30,		Six months ended June 30,
	2017	2016	2017	2016

Stock options outstanding	3,805	3,584	3,805	3,584
Restricted stock units	535	661	535	661
Total	4,340	4,245	4,340	4,245