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Commitments And Contingencies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Warranty Accrual Activity
Balance, Beginning of Period	$ 24,030	$ 24,004
Warranty Expense	8,556	7,441
Warranty Claims Paid	(7,678)	(4,009)
Balance, End of Period	$ 24,908	$ 27,436

- 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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