Calculation Of Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2021

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 September 30,		Nine Months Ended  September 30,
	2021	2020	2021	2020
	(In thousands)
Weighted-average shares of common stock outstanding	111,664	114,655	112,389	115,456
Weighted-average potential shares of common stock outstanding:
Unvested RSUs and ESPP	129	176	141	243
Shares used to compute diluted earnings per share	111,793	114,831	112,530	115,699