Summary of Significant Accounting Policies - Computation of Basic EPS to Dilutive EPS (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net earnings per share, basic, Net Earnings	$ 234,475	$ 227,562	$ 202,034
Effect of stock options and stock grants, Net Earnings	0	0	0
Net earnings per share, diluted, Net Earnings	$ 234,475	$ 227,562	$ 202,034
Net earnings per share, basic, Weighted Average Shares	142,596,252	142,291,939	142,032,420
Effect of stock options and stock grants, Weighted Average Shares	611,647	842,281	512,571
Net earnings per share, diluted, Weighted Average Shares	143,207,899	143,134,220	142,544,991
NET EARNINGS PER SHARE, BASIC	$ 1.64	$ 1.60	$ 1.42
Effect of stock options and stock grants, Per Share Amount	(0)	(0.01)
Net earnings per share, diluted, Per Share Amount	$ 1.64	$ 1.59	$ 1.42