Income Taxes Income Before Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 115,413	$ 86,985	$ 69,444
Income (Loss) from Continuing Operations before Income Taxes, Foreign	123,429	122,163	101,815
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	$ 238,842	$ 209,148	$ 171,259