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:
U.S.	$ 19,341	$ (8,545)	$ (7,920)
International	97,548	72,350	50,880
Income from continuing operations before income taxes	116,889	63,805	42,960
Current:
U.S. – federal	11,829	578	(30)
U.S. – state	805	758	203
International	11,695	9,958	7,486
Current Income Tax Expense (Benefit)	24,329	11,294	7,659
Deferred:
U.S. – federal	831	(423)	(2,236)
U.S. – state	928	(434)	290
International	(772)	(610)	(5,583)
Deferred Income Tax Expense (Benefit)	987	(1,467)	(7,529)
Income tax provision	$ 25,316	$ 9,827	$ 130