Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Calculation of Net Income (Loss) and Number of Shares Used to Compute Basic and Diluted Earnings Per Share

The calculation of net income (loss) and the number of shares used to compute basic and diluted earnings per share for the three and nine-month periods ended September 30, 2012 and 2011 are as follows:

	Three Months Ended September 30,					Nine Months Ended September 30,
In thousands	2012			2011		2012			2011
Net income (loss)	$	(53,213	)	$	13,910	$	(160,419	)	$	(71,801	)
Weighted-average shares outstanding – basic		166,296			132,587		164,378			131,215
Dilutive stock options		—			3,187		—			—
Restricted stock and restricted stock units		—			1,706		—			—
Weighted-average shares outstanding – diluted		166,296			137,480		164,378			131,215

Potentially Dilutive Securities Excluded in Computation of Net Loss Per Share

For the three-month and nine-month periods ended September 30, 2012 and 2011, the following potentially dilutive securities were not included in the computation of net income (loss) per share because the effect would be antidilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
In thousands	2012		2011		2012		2011
Stock options		7,547		798		7,547		6,921
Restricted stock and restricted stock units		2,139		—		2,139		2,777
Warrants		—		5,806		—		5,806
		9,686		6,604		9,686		15,504