SEGMENT INFORMATION (Geographic) (Detail) - USD ($) $ 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
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
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
Property, plant, and equipment, net	390,235				388,903				390,235	388,903	413,644
United States [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net sales									1,562,180	1,472,241	1,502,363
Property, plant, and equipment, net	264,829				272,826				264,829	272,826	293,612
United Kingdom [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net sales									118,350	114,752	135,673
Property, plant, and equipment, net	41,100				39,014				41,100	39,014	36,061
Other Foreign Countries [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net sales									590,496	521,938	567,647
Property, plant, and equipment, net	$ 84,306				$ 77,063				$ 84,306	$ 77,063	$ 83,971