COMMITMENTS AND CONTINGENCIES (Accrued Environmental Remediation Costs) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 36,819	$ 41,401	$ 48,404
Continuing Operations [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	25,837	30,429	37,590
Retained From Former Chemicals Business [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 10,982	$ 10,972	$ 10,814