SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract]
Interest (exclusive of amount capitalized)	$ 83,801	$ 1,426
Income taxes	3,209	584
Accrued liabilities for purchases of property, plant & equipment	$ 16,035	$ 5,404