COMMITMENTS AND CONTINGENCIES (Accrued Environmental Remediation Costs) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 36,994	$ 41,401	$ 44,531
Continuing Operations [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	26,094	30,429	33,706
Retained From Former Chemicals Business [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 10,900	$ 10,972	$ 10,825