Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2018

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,
	2018			2017			2018			2017
	(In thousands)
Net loss	$	(22,702	)	$	(15,356	)	$	(66,277	)	$	(43,580	)
Weighted average shares outstanding, basic and diluted		43,161			35,189			42,684			34,945
Net loss per share, basic and diluted	$	(0.53	)	$	(0.44	)	$	(1.55	)	$	(1.25	)

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:

	Periods Ended September 30,
	2018		2017
	(In thousands)
Unvested restricted stock		144		766
Stock options		4,253		4,421
Total		4,397		5,187