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Note K - Contingencies (Detail) - Warranty Liability (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Aggregate product warranty liability at beginning of period	$ 313	$ 215
Net aggregate expense related to product warranties	710	620
Aggregate reductions for payments	(240)	(390)
Aggregate product warranty liability at end of period	$ 783	$ 445

- 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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