Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2015

Disclosure Potential Common Shares Excluded From Computation Of Diluted Net Loss Per Share [Abstract]

Potential Common Shares Excluded from Computation of Diluted Net Loss per Share

Potential dilutive common share equivalents consist of the following:

	Three and Nine Months Ended September 30,
	2015	2014
2.00% Convertible Senior Notes	4,327,257	4,327,257
Unvested restricted stock units	862,044	786,850
Outstanding options	2,959,320	1,549,211
Total dilutive common shares	8,148,621	6,663,318