COMMITMENTS AND CONTINGENCIES (Changes in Environmental Liability) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accrual for Environmental Loss Contingencies [Roll Forward]
Balances at the Beginning of the Period				$ 9,083	$ 4,979	$ 12,770
Additions to Accrual	$ 2,700	$ 1,600	$ 2,900	1,576	5,600	0
Expenditures for Remediation				649	1,496	7,791
Balance at Period-end	$ 9,083	$ 10,010		$ 10,010	$ 9,083	$ 4,979