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Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2017

Schedule of Anti-dilutive Net Loss Per Share

The following potential common stock equivalents, as calculated using the treasury stock method, were not included in the computation of diluted net loss per share as their effect would have been anti-dilutive due to the net loss incurred (in thousands):



	Years Ended December 31,
	2017	2016	2015
Options to purchase common stock	1,100	785	732
Unvested restricted stock	224	361	350
Total	1,324	1,146	1,082