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Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2017				2016				2017				2016
	(In thousands, except per share amounts)
Amounts attributable to common stockholders:
Net income:
Net income — basic	$	68,481			$	15,620			$	243,183			$	63,065
After tax interest on convertible debt	13				10				25				22
Net income — diluted	$	68,494			$	15,630			$	243,208			$	63,087
Weighted average shares (denominator):
Weighted average shares — basic	187,597				193,806				187,927				194,366
Stock options	4,333				2,788				4,389				2,975
Restricted stock units	87				3				74				1
Convertible debt	121				121				121				121
Weighted average shares — diluted	192,138				196,718				192,511				197,463
Net income per share:
Basic	$	0.37			$	0.08			$	1.29			$	0.32
Diluted	$	0.36			$	0.08			$	1.26			$	0.32

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
	(In thousands)
Antidilutive options	1,523			1,799			1,212			2,338
Antidilutive restricted stock units	—			—			—			24
Total common stock equivalents excluded from computation	1,523			1,799			1,212			2,362

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- References

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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