Earnings Per Share - Details of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income	$ 70,988	$ 72,398
Weighted average shares outstanding – basic	87,122	86,808
Dilutive effect of stock plans	628	1,178
Weighted average shares outstanding – diluted	87,750	87,986
Basic earnings per share	$ 0.81	$ 0.83
Diluted earnings per share	$ 0.81	$ 0.82
Anti-dilutive shares	65	27