Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Schedule of Basic and Diluted Net Loss Per Share

Basic and diluted loss per share was calculated as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2019			2018			2019			2018
	(In thousands)
Net loss	$	(23,634	)	$	(22,702	)	$	(71,257	)	$	(66,277	)
Weighted average shares outstanding, basic and diluted		48,554			43,161			46,547			42,684
Net loss per share, basic and diluted	$	(0.49	)	$	(0.53	)	$	(1.53	)	$	(1.55	)

Potential Dilutive Securities Excluded from Computation of Diluted Net Loss Per Common Share

The following common stock equivalents were excluded from the calculation of diluted loss per share because their inclusion would have been anti-dilutive:

	Nine Months Ended September 30,
	2019		2018
	(In thousands)
Unvested restricted stock		72		144
Stock options		5,408		4,253
		5,480		4,397