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Product Warranties (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Product Warranties Disclosures [Abstract]
Balance, beginning of period	$ 4,269
Current year warranty expense	1,760
Product Warranties Payments	(2,232)
Balance, end of period	$ 3,797

- 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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