Net Loss per Common Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Computations of diluted net loss per share

The computations of diluted net loss per share for the three and six month periods ended June 30, 2017 and 2016 did not include the effects of the following stock options and other equity awards which were outstanding as of the end of each period because the inclusion of these securities would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016
Options outstanding to purchase common stock	2,541	2,747	2,541	2,747
Other unvested equity awards	2,655	2,101	2,655	2,101
Total	5,196	4,848	5,196	4,848