INCOME TAXES (Deferred Tax Assets and Liabilties) (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Pension plans	$ 18,903	$ 45,568
Environmental reserves	7,109	9,871
Inventory	15,116	21,758
Postretirement/postemployment benefits	8,241	13,542
Incentive compensation	7,721	9,425
Net operating loss	10,908	10,345
Capital Loss Carryforwards	7,047	11,352
Other	28,775	39,977
Total deferred tax assets	103,820	161,838
Deferred tax liabilities:
Depreciation	19,586	25,963
Goodwill amortization	67,779	97,667
Other intangible amortization	38,252	51,712
Other	12,636	16,225
Total deferred tax liabilities	138,253	191,567
Valuation allowance	12,322	17,776
Deferred Tax Liabilities, Net	$ 46,755	$ 47,505