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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2012	Dec. 31, 2011
Schedule of Changes in product warranty claim costs
Balance at Beginning of Period	$ 71	$ 6	$ 6
Accruals (Reductions) for Warranties Issued During the Period	(27)
Settlements (in Cash or in Kind) During the Period	(38)
Balance at End of Period	$ 6	$ 6	$ 6

- 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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