Commitments and Contingencies Warranty Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Warranty Changes and Adjustments	$ (3,770)	$ 5,631	$ 2,061	$ 14,643
Warranty expense	(263)	7,827	7,697	10,164
Warranty charge related to certain products in Brazil. [Member]
Warranty Changes and Adjustments				$ 7,700