Calculation Of Net Income Per Share (Tables)

6 Months Ended

Jun. 30, 2020

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:

	Three Months Ended June 30,		Six Months Ended June 30,
	2020	2019	2020	2019
	(In thousands)
Weighted-average shares of common stock outstanding	115,347	118,965	115,861	119,359
Weighted-average potential shares of common stock outstanding:
Unvested RSUs and ESPP	197	396	276	478
Shares used to compute diluted earnings per share	115,544	119,361	116,137	119,837