Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Schedule of Basic and Diluted Net Loss Per Share

Basic and diluted loss per share was calculated as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(In thousands)
Net loss	$	(25,683	)	$	(22,219	)	$	(47,623	)	$	(43,575	)
Weighted average shares outstanding, basic and diluted		45,814			42,836			45,526			42,441
Net loss per share, basic and diluted	$	(0.56	)	$	(0.52	)	$	(1.05	)	$	(1.03	)

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:

	Six Months Ended June 30,
	2019		2018
	(In thousands)
Unvested restricted stock		73		261
Stock options		5,315		4,881
		5,388		5,142