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Financial Guarantees and Commitments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Summary of financial guarantees and commitments
Product warranty reserves	$ 1,767	$ 1,914
Letters of credit outstanding	4,766	5,424
Other financial guarantees	3,063	3,192
Total financial guarantees and commitments	$ 9,596	$ 10,530

This item represents a non-contingent liability for the fair value of an obligation to stand ready to perform over the term of a guaranty issued in the event that specified triggering events or conditions occur.

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- 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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