QUARTERLY RESULTS OF OPERATIONS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 668,444	$ 571,614	$ 550,047	$ 601,231	$ 655,771	$ 614,880	$ 638,996	$ 578,314	$ 2,391,336	$ 2,487,961	$ 2,411,835
Gross Profit	241,801	212,821	186,026	200,579	245,752	226,076	230,044	196,873	841,227	898,745	871,261
Net earnings	$ 53,993	$ 64,620	$ 31,018	$ 51,761	$ 89,408	$ 82,510	$ 80,072	$ 55,593	$ 201,392	$ 307,583	$ 275,749
Basic earnings per share	$ 1.31	$ 1.56	$ 0.75	$ 1.22	$ 2.09	$ 1.93	$ 1.87	$ 1.30	$ 4.83	$ 7.20	$ 6.28
Diluted earnings per share	$ 1.30	$ 1.55	$ 0.74	$ 1.21	$ 2.08	$ 1.92	$ 1.86	$ 1.29	$ 4.80	$ 7.15	$ 6.22