PROPERTY, PLANT & EQUIPMENT (Capitalized Interest Costs and Total Interest Costs Incurred) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
PROPERTY, PLANT & EQUIPMENT [Abstract]
Capitalized interest cost	$ 3,896	$ 3,674	$ 5,177
Total interest cost incurred before recognition of the capitalized amount	$ 134,051	141,651	300,699
Combined charge, component of interest expense		$ 7,388	$ 148,030