PROPERTY, PLANT & EQUIPMENT (Capitalized Interest Costs and Total Interest Costs Incurred) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
PROPERTY, PLANT & EQUIPMENT [Abstract]
Capitalized interest cost	$ 2,930	$ 2,092	$ 1,089
Total interest cost incurred before recognition of the capitalized amount	$ 223,518	$ 245,459	$ 203,677