2. Loss per share

Basic loss per share is computed by dividing net loss by the weighted average number of common shares outstanding during the periods. Diluted loss per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock and is calculated using the treasury stock method for stock options and unvested shares. Common equivalent shares are excluded from the calculation in the loss periods as their effects would be anti-dilutive.

The information related to basic and diluted loss per share for the three and nine months ended September 30, 2017 and 2016 is as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
(In thousands, except share data)	2017			2016			2017			2016
Numerator:
Net loss	$	(14,095	)	$	(9,744	)	$	(47,229	)	$	(23,700	)
Denominator:
Weighted average shares outstanding - Basic and diluted		55,390,247			50,654,690			54,665,776			42,100,504
Loss per share:
Basic and diluted:	$	(0.25	)	$	(0.19	)	$	(0.86	)	$	(0.56	)