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Product Warranty (Changes In Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Product Warranty [Abstract]
Beginning balance	$ 82	$ 105
Warranty expense	4	27
Closed warranty claims	(9)	(50)
Ending balance	$ 77	$ 82

- 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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