SEGMENT INFORMATION (Geographic) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales	$ 648,622	$ 595,393	$ 620,298	$ 547,522	$ 611,881	$ 567,901	$ 567,653	$ 523,591	$ 2,411,835	$ 2,271,026	$ 2,108,931
Property, plant, and equipment, net	374,660				390,235				374,660	390,235	388,903
United States [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									1,623,511	1,562,180	1,472,241
Property, plant, and equipment, net	258,504				264,829				258,504	264,829	272,826
United Kingdom [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									126,439	118,350	114,752
Property, plant, and equipment, net	34,649				41,100				34,649	41,100	39,014
Other Foreign Countries [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									661,885	590,496	521,938
Property, plant, and equipment, net	$ 81,507				$ 84,306				$ 81,507	$ 84,306	$ 77,063