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Calculation Of Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

The following table presents the computation of weighted-average shares used in the calculation of basic and diluted earnings per share:

	Year Ended December 31,
	2017			2016			2015
	(In thousands)
Weighted-average shares of common stock outstanding	100,325			107,001			114,155
Weighted-average potential shares of common stock outstanding:
Conversion spread related to Subordinated Convertible Debentures	23,247			21,074			18,047
Unvested RSUs, and ESPP	608			758			829
Shares used to compute diluted earnings per share	124,180			128,833			133,031

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- References

No definition available.

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- Definition

Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit).

+ 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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