SEGMENT INFORMATION (Geographic) (Detail) - USD ($) $ 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
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
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
Property, plant, and equipment, net	378,200				385,593				378,200	385,593	374,660
United States [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									1,758,424	1,710,371	1,623,511
Property, plant, and equipment, net	271,299				271,609				271,299	271,609	258,504
United Kingdom [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									90,628	120,297	126,439
Property, plant, and equipment, net	34,221				34,228				34,221	34,228	34,649
Other Foreign Countries [Member]
RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Net Sales									542,284	657,293	661,885
Property, plant, and equipment, net	$ 72,680				$ 79,756				$ 72,680	$ 79,756	$ 81,507