Net loss per share (Tables)

9 Months Ended

Sep. 30, 2017

Net Income (Loss) Per Share

Schedule of calculation of net income (loss) per share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands, except per share data)		2017	2016			2017	2016
Basic Net Income (Loss) Per Share
Basic net income (loss)	$	36,054	$	36,877	$	(163,513)	$	95,349
Weighted average common shares outstanding		206,796		188,029		202,399		187,632
Basic net income (loss) per share	$	0.17	$	0.20	$	(0.81)	$	0.51
Diluted Net Income (Loss) Per Share
Diluted net income (loss)	$	36,054	$	36,877	$	(163,513)	$	95,349
Weighted average common shares outstanding		206,796		188,029		202,399		187,632
Dilutive stock options and RSUs		5,814		6,236		—		6,122
Weighted average shares used to compute diluted net income (loss) per share		212,610		194,265		202,399		193,754
Diluted net income (loss) per share	$	0.17	$	0.19	$	(0.81)	$	0.49

Schedule of antidilutive securities excluded from the computation of earnings per share

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2017	2016	2017	2016
Outstanding stock options and awards	2,399,468	3,119,097	12,654,718	2,947,152
Common shares issuable upon conversion of the 2018 Notes	149,527	7,245,206	149,527	7,245,206
Common shares issuable upon conversion of the 2020 Notes	368,939	7,241,284	368,939	7,241,284
Total potential common shares excluded from diluted net loss per share computation	2,917,934	17,605,587	13,173,184	17,433,642