Computation of Basic and Diluted Net Income Per Share Attributable to Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income	$ 111,814	$ 112,800	$ 199,612	$ 247,098
Weighted average common shares outstanding, basic (in shares)	76,524	78,395	76,722	78,568
Dilutive effect of potential common stock (in shares)	165	150	175	272
Total shares, diluted (in shares)	76,689	78,545	76,897	78,840
Net income per share, basic (in usd per share)	$ 1.46	$ 1.44	$ 2.60	$ 3.15
Net income per share, diluted (in usd per share)	$ 1.46	$ 1.44	$ 2.60	$ 3.13
Anti-dilutive potential common shares (in shares)	329	361	367	314