Net income (loss) per share

3 Months Ended

Mar. 31, 2016

Net income (loss) per share

Net income (loss) per share

11.    Net income (loss) per share

Net income (loss) per share was calculated as follows for the periods indicated:

	Three Months Ended
	March 31,
(in thousands, except per share data)		2016	2015
Basic Net Income (Loss) Per Share
Basic net income (loss)	$	24,047	$	(18,359)
Weighted average common shares outstanding		187,184		172,070
Basic net income (loss) per share	$	0.13	$	(0.11)
Diluted Net Income (Loss) Per Share
Diluted net income (loss)	$	24,047	$	(18,359)
Weighted average common shares outstanding		187,184		172,070
Dilutive stock options and RSU’s		5,441		—
Weighted average shares used to compute diluted net income (loss) per share		192,625		172,070
Diluted net income (loss) per share	$	0.12	$	(0.11)

The following potential common shares were excluded from the calculations as their effect would be anti-dilutive:

	Three Months Ended
	March 31,
	2016	2015
Outstanding stock options and awards	2,652,265	14,626,717
Common shares issuable upon conversion of the 4.75% Convertible Senior Notes due 2015	—	10,353,076
Common shares issuable upon conversion of the 2018 Notes	7,245,244	7,245,263
Common shares issuable upon conversion of the 2020 Notes	7,241,284	7,245,263
Total potential common shares excluded from diluted net loss per share computation	17,138,793	39,470,319