Other Income, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Component of Other Income, Nonoperating [Line Items]
Other Income, Net	$ 6,853	$ 14,243	$ 2,071
Equity income from investments [Member]
Component of Other Income, Nonoperating [Line Items]
Other Income, Net	17,000	13,000
Foreign Currency Gain (Loss) [Member]
Component of Other Income, Nonoperating [Line Items]
Other Income, Net		4,000
Gain Loss On Sale Of Other Assets [Member]
Component of Other Income, Nonoperating [Line Items]
Other Income, Net	(5,000)
Sales of Warehouse Stock Gains (Losses) [Member]
Component of Other Income, Nonoperating [Line Items]
Other Income, Net	$ (5,000)	$ (4,000)