INCOME TAXES - Schedule of Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Pension and other postretirement liabilities	$ 12,460	$ 15,621
Rationalization and other accrued liabilities	60,005	49,115
AMT and other credit carryforwards	6,236	6,102
Net operating loss carryforwards	98,478	80,853
Other intangible assets	1,326	2,288
Foreign currency translation	16,237	0
Property, plant and equipment	1,599	1,703
Inventory and related reserves	2,882	2,852
Long term operating lease liabilities	67,637	51,449
Other	25,384	41,331
Total deferred tax assets	292,244	251,314
Deferred tax liabilities:
Property, plant and equipment	(280,701)	(283,505)
Pension and other postretirement liabilities	(46,533)	(45,835)
Other intangible assets	(245,599)	(223,672)
Rationalization and other accrued liabilities	(931)	(1,537)
Operating lease right of use assets	(64,892)	(48,788)
Inventory and related reserves	(11,873)	(11,723)
Foreign currency translation	0	(24,830)
Other	(25,180)	(14,609)
Total deferred tax liabilities	(675,709)	(654,499)
Valuation allowance	(116,078)	(91,340)
Net deferred tax liabilities	$ (499,543)	$ (494,525)