OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
OTHER INCOME (EXPENSE)
Equity earnings in affiliates	$ 108	$ 81	$ 399	$ 323
Other components of net periodic pension (cost) income	(72,641)	(1,064)	(77,730)	(1,967)
Other income (expense)	1,092	2,045	6,176	2,812
Total Other income (expense)	$ (71,441)	$ 1,062	$ (71,155)	$ 1,168