INCOME TAXES (Deferred Tax Assets and Liabilties) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Pension plans	$ 28,020	$ 18,903
Environmental reserves	8,613	7,109
Inventory	14,154	15,116
Postretirement/postemployment benefits	7,636	8,241
Incentive compensation	8,472	7,721
Net operating loss	9,868	10,908
Capital Loss Carryforwards	6,972	7,047
Other	27,795	28,775
Total deferred tax assets	111,530	103,820
Deferred tax liabilities:
Depreciation	24,983	19,586
Goodwill amortization	70,850	67,779
Other intangible amortization	33,600	38,252
Withholding Taxes	10,300	3,800
Other	5,345	8,836
Total deferred tax liabilities	145,078	138,253
Valuation allowance	11,646	12,322
Deferred Tax Liabilities, Net	$ 45,194	$ 46,755