Equity (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accumulated other comprehensive income (loss), net of tax
Beginning Balance, Currency Translation	$ (11,978)	$ 4,874	$ (43,046)
Change, Currency Translation	(5,792)	(16,852)	47,920
Ending Balance, Currency Translation	(17,770)	(11,978)	4,874
Beginning Balance, Other	10,305	4,175	(2,943)
Change, Other	(18,269)	6,130	7,118
Ending Balance, Other	(7,964)	10,305	4,175
Beginning Balance, Accumulated Other Comprehensive Income (Loss)	(1,673)	9,049	(45,989)
Change, Accumulated Other Comprehensive Income (Loss)	(24,061)	(10,722)	55,038
Ending Balance, Accumulated Other Comprehensive Income (Loss)	$ (25,734)	$ (1,673)	$ 9,049