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Commitments And Contingencies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance, Beginning of Period	$ 24,004	$ 17,936	$ 920
Warranty Expense	23,195	20,183	23,898
Warranty Claims Paid	(20,837)	(14,115)	(6,882)
Balance, End of Period	$ 26,362	$ 24,004	$ 17,936

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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