NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock.

For the three and nine months ended September 30, 2017, 633,391 and 851,254 common stock equivalents, respectively, related to equity-based awards were not included in the diluted earnings per share calculation as the shares would be antidilutive. Similarly, 215,298 and 404,543 common stock equivalents were excluded from the diluted earnings per share calculation for the three and nine months ended September 30, 2016, respectively.

The 3.25% Convertible Senior Notes (“Convertible Notes”) were not included in the computation of diluted net income (loss) per share for the three and nine months ended September 30, 2016 because there is no excess value upon conversion over the principal amount of the Convertible Notes. The outstanding Convertible Notes were redeemed in the third quarter of 2016.



	Three months ended September 30,					Nine months ended September 30,
In thousands except per share amounts	2017			2016		2017			2016
Net income (loss) available to common stockholders	$	(16,652	)	$	69,557	$	(8,944	)	$	63,660
Weighted average shares:
Basic	179,278			161,039		179,141			155,108
Effect of stock-based compensation plans	—			4,789		—			3,284
Diluted	179,278			165,828		179,141			158,392
Income (loss) per share:
Basic	$	(0.09	)	$	0.43	$	(0.05	)	$	0.41
Diluted	$	(0.09	)	$	0.42	$	(0.05	)	$	0.40