Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2014

Net Loss per Share

Schedule of anti-dilutive securities

	Year Ended December 31,
(In thousands)	2014		2013		2012
Share issuances under equity incentive plan and ESPP		6,239		4,095		5,367
Unvested RSAs		1,772		2,364		2,501
Shares issuable upon conversion of convertible subordinated notes		12,329		2,780		6,668
		20,340		9,239		14,536