Calculation Of Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

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

The following table presents the weighted-average number of shares used in the calculation of basic and diluted net income per share:

	Three Months Ended March 31,
	2014	2013
	(In thousands)
Weighted-average shares of common stock outstanding	133,417	152,543
Weighted-average potential shares of common stock outstanding:
Conversion spread related to the Subordinated Convertible Debentures	14,286	7,904
Unvested RSUs	817	787
Stock options	37	104
Employee stock purchase plan	43	8
Shares used to compute diluted net income per share	148,600	161,346

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

The following table presents the weighted-average potential shares of common stock that were excluded from the above calculation because their effect was anti-dilutive:

	Three Months Ended March 31,
	2014	2013
	(In thousands)
Weighted-average RSUs outstanding	19	301
Employee stock purchase plan	90	86