Property, Plant and Equipment Depreciation Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of depreciation expense [Line Items]
Total depreciation expense	$ 108,036	$ 96,298
Cost of Sales [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	99,767	89,167
Selling, General and Administrative Expense [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	3,436	4,136
Research and Development Expense [Member]
Schedule of depreciation expense [Line Items]
Total depreciation expense	$ 4,833	$ 2,995