ACCRUED ENVIRONMENTAL REMEDIATION COSTS (Accrued Environmental Remediation Costs) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 50,430	$ 32,488
Continuing Operations [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	39,745	21,784
Retained From Former Chemicals Business [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 10,685	$ 10,704