The calculation of the basic and diluted net income per share was as follows:



	Year Ended December 31,
	2017			2016		2015
(In thousands, except per-share amounts)
Net income from continuing operations:
Net income from continuing operations—basic	$	121,088		$	308,253	$	281,539
Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1)	(215		)	5,816		14,758
Net income from continuing operations—diluted	$	120,873		$	314,069	$	296,297

Net income:
Net income from continuing operations—basic	$	121,088		$	308,253	$	281,539
Income from discontinued operations, net of tax	—			—		5,385
Net income—basic	121,088			308,253		286,924
Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1)	(215		)	5,816		14,758
Net income—diluted	$	120,873		$	314,069	$	301,682

Average common shares outstanding—basic	215,321			211,789		199,910
Dilutive effect of Convertible Senior Notes due 2017 (2)	323			207		6,293
Dilutive effect of Convertible Senior Notes due 2019	457			14,263		37,736
Dilutive effect of stock-based compensation arrangements (2)	4,305			2,999		2,393
Adjusted average common shares outstanding—diluted	220,406			229,258		246,332

Net income per share:

Basic:
Net income from continuing operations	$	0.56		$	1.46	$	1.41
Income from discontinued operations, net of tax	—			—		0.03
Net income	$	0.56		$	1.46	$	1.44

Diluted:
Net income from continuing operations	$	0.55		$	1.37	$	1.20
Income from discontinued operations, net of tax	—			—		0.02
Net income	$	0.55		$	1.37	$	1.22

______________________

(1)

As applicable, includes coupon interest, amortization of discount and fees, and other changes in income or loss that would result from the assumed conversion. Included in the year ended December 31, 2017 is a benefit related to our adjustment of estimated accrued expense to actual amounts, resulting from the January 2017 settlement of our obligations on the remaining Convertible Senior Notes due 2019.


(2)	The following number of shares of our common stock equivalents issued under our share-based compensation arrangements and convertible debt, if any, were not included in the calculation of diluted net income per share because they were anti-dilutive:



	Year Ended December 31,
(in thousands)	2017	2016	2015
Shares of common stock equivalents	353	1,042	728