EARNINGS PER SHARE (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings Per Share Reconciliation [Abstract]
Net earnings	$ 484,228	$ 404,978	$ 354,509
Basic (shares)	37,417	38,153	38,283
Dilutive effect of stock options and deferred stock compensation	214	220	246
Diluted	37,631	38,373	38,529
Diluted earnings per share (usd per share)	$ 12.87	$ 10.55	$ 9.20
Basic earnings per share (usd per share)	$ 12.94	$ 10.61	$ 9.26