QUARTERLY RESULTS OF OPERATIONS (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 611,881	$ 567,901	$ 567,653	$ 523,591	$ 565,566	$ 507,092	$ 532,766	$ 503,507	$ 2,271,026	$ 2,108,931	$ 2,205,683
Gross Profit	238,267	210,783	198,770	170,775	208,725	184,476	185,379	171,903	818,595	750,483	783,255
Earnings from continuing operations	67,750	63,944	50,650	32,547	70,668	45,932	39,963	32,819	214,891	189,382	192,248
Earnings from discontinued operations	0	0	0	0	(2,053)	0	0	0	0	(2,053)	(46,787)
Net earnings	$ 67,750	$ 63,944	$ 50,650	$ 32,547	$ 68,615	$ 45,932	$ 39,963	$ 32,819	$ 214,891	$ 187,329	$ 145,461
Basic earnings per share
Earnings from continuing operations	$ 1.54	$ 1.45	$ 1.15	$ 0.74	$ 1.60	$ 1.04	$ 0.90	$ 0.74	$ 4.86	$ 4.27	$ 4.12
Earnings from discontinued operations	0.00	0.00	0.00	0.00	(0.05)	0.00	0.00	0.00	0.00	(0.05)	(1.00)
Total	1.54	1.45	1.15	0.74	1.55	1.04	0.90	0.74	4.86	4.22	3.12
Diluted earnings per share
Earnings from continuing operations	1.52	1.43	1.13	0.73	1.58	1.02	0.88	0.73	4.80	4.20	4.04
Earnings from discontinued operations	0.00	0.00	0.00	0.00	(0.05)	0.00	0.00	0.00	0.00	(0.05)	(0.99)
Total	$ 1.52	$ 1.43	$ 1.13	$ 0.73	$ 1.53	$ 1.02	$ 0.88	$ 0.73	$ 4.80	$ 4.15	$ 3.05