Summary of Significant Accounting Policies - Computation of Basic EPS to Dilutive EPS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net earnings per share, basic, Net Earnings	$ 52,568	$ 55,972
Effect of stock options and stock grants, Net Earnings	0	0
Net earnings per share, diluted, Net Earnings	$ 52,568	$ 55,972
Net earnings per share, basic, Weighted Average Shares	142,665,646	142,558,743
Effect of stock options and stock grants, Weighted Average Shares	400,365	743,320
Net earnings per share, diluted, Weighted Average Shares	143,066,011	143,302,063
Net earnings per share, basic, Per Share Amount	$ 0.37	$ 0.39
Effect of stock options and stock grants, Per Share Amount	0	0
Net earnings per share, diluted, Per Share Amount	$ 0.37	$ 0.39