Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2014

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

The calculation of net loss and the number of shares used to compute basic and diluted earnings per share for the years ended December 31, 2014, 2013 and 2012 are as follows:

In thousands, except per share amounts	2014			2013			2012
Net loss	$	(162,602	)	$	(274,158	)	$	(220,872	)
Weighted average shares outstanding – basic and diluted		186,835			183,575			164,964
Net loss per share – basic and diluted	$	(0.87	)	$	(1.49	)	$	(1.34	)

Potentially Dilutive Securities Excluded in Computation of Net Loss Per Share

For the years ended December 31, 2014, 2013 and 2012, the following potentially dilutive securities were not included in the computation of net loss per share because the effect would be anti-dilutive:

In thousands	2014		2013		2012
Stock options		10,148		10,380		8,228
Restricted stock and restricted stock units		3,503		2,048		1,903
		13,651		12,428		10,131