Property, Plant and Equipment Depreciation Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of depreciation expense [Line Items]
Total depreciation expense	$ 119,417	$ 105,234	$ 339,213	$ 299,311
Cost of Sales [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	111,432	97,648	312,793	277,621
Selling, General and Administrative Expense [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	4,127	3,672	11,489	11,667
Research and Development Expense [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	$ 3,858	$ 3,914	$ 14,931	$ 10,023