QUARTERLY RESULTS OF OPERATIONS (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 655,771,000	$ 614,880,000	$ 638,996,000	$ 578,314,000	$ 648,622,000	$ 595,393,000	$ 620,298,000	$ 547,522,000	$ 2,487,961,000	$ 2,411,835,000	$ 2,271,026,000
Gross Profit	245,752,000	226,076,000	230,044,000	196,873,000	241,052,000	222,518,000	226,500,000	181,191,000	898,745,000	871,261,000	800,785,000
Net earnings	$ 89,408,000	$ 82,510,000	$ 80,072,000	$ 55,593,000	$ 82,835,000	$ 74,483,000	$ 74,788,000	$ 43,643,000	$ 307,583,000	$ 275,749,000	$ 214,891,000
Basic earnings per share	$ 2.09	$ 1.93	$ 1.87	$ 1.30	$ 1.91	$ 1.70	$ 1.69	$ 0.99	$ 7.20	$ 6.28	$ 4.86
Diluted earnings per share	$ 2.08	$ 1.92	$ 1.86	$ 1.29	$ 1.89	$ 1.68	$ 1.68	$ 0.98	$ 7.15	$ 6.22	$ 4.80