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Inventories And Warranties (Schedule Of Changes In Estimated Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Inventories And Warranties [Abstract]
Balance at beginning of period	$ 985	$ 702
Accrual for warranties	616	944
Settlements made during the period	(779)	(752)
Balance at end of period	$ 822	$ 894
Product warranties time frame, years	1 year

- 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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