Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2012

Potentially Dilutive Securities Excluded in Computation of Net Loss Per Share

For the three-month periods ended March 31, 2012 and 2011, the following potentially dilutive securities were not included in the computation of net loss per share because the effect would be anti-dilutive:

	Three Months Ended March  31,
In thousands	2012		2011
Outstanding stock options		8,126		6,884
Outstanding restricted stock and restricted stock units		2,259		2,394
Warrants to purchase common stock		—		6,038
		10,385		15,316