Note 2 - Net Income Per Share

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Net Income Per Share

Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding, while diluted net income per share is computed by dividing net income attributable to common shareholders by the sum of the weighted-average number of common shares outstanding and the weighted-average number of dilutive potential common shares. Dilutive potential common shares relate to our share-based compensation arrangements and our outstanding convertible senior notes.

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

	Three Months Ended March 31,
(In thousands, except per-share amounts)	2017			2016
Net income—basic	$	76,472		$	66,249
Adjustment for dilutive Convertible Senior Notes due 2019, net of tax (1)	(215		)	3,390
Net income—diluted	$	76,257		$	69,639
Average common shares outstanding—basic	214,925			203,706
Dilutive effect of Convertible Senior Notes due 2017 (2)	701			—
Dilutive effect of Convertible Senior Notes due 2019	1,854			33,583
Dilutive effect of share-based compensation arrangements (2)	4,017			2,418
Adjusted average common shares outstanding—diluted	221,497			239,707
Net income per share:
Basic	$	0.36		$	0.33
Diluted	$	0.34		$	0.29

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(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. Due to the January 2017 settlement of our obligations on the remaining Convertible Senior Notes due 2019, a benefit was recorded to adjust estimated accrued expense to actual amounts.

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

	Three Months Ended March 31,
(In thousands)	2017	2016
Shares of common stock equivalents	445	709
Shares of Convertible Senior Notes due 2017	—	1,902