Property, Plant And Equipment (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Abstract]
Capitalized interest included in property, plant and equipment	$ 8,167	$ 4,577	$ 6,197
Depreciation expense	276,432	217,393	220,580
Capital leases included in the property, plant and equipment, cost	7,207	7,219
Capital leases included in the property, plant and equipment, accumulated depreciation	$ 5,817	$ 5,581