COMMITMENTS AND CONTINGENCIES (Accrued Environmental Remediation Costs) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 36,110	$ 36,515	$ 36,994
Continuing Operations [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	25,414	25,544	26,094
Retained From Former Chemicals Business [Member]
Loss Contingencies [Line Items]
Accrued Environmental Remediation Costs	$ 10,696	$ 10,971	$ 10,900