COMMITMENTS AND CONTINGENCIES (Accrued Environmental Remediation Costs) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 33,589	$ 41,401	$ 45,944
Continuing Operations [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	22,743	30,429	35,218
Retained From Former Chemicals Business [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 10,846	$ 10,972	$ 10,726