Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Securities not included in the net loss per common share calculations

The following shares were not included in the computation of diluted net loss per share (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2014	2013	2014	2013
Options to purchase common stock	3,674	4,805	3,674	4,805
Restricted stock units/awards	1,950	1,665	1,950	1,665
Performance-contingent restricted stock units	774	—	774	—
Warrants to purchase common stock	75	75	75	75
Total shares excluded as anti-dilutive	6,473	6,545	6,473	6,545