Product Warranty

3 Months Ended

Mar. 31, 2012

Product Warranty [Abstract]

Product Warranty

Note 4. Product Warranty

We provide a limited warranty for the replacement of defective products for a specified time period after sale. We estimate the costs that may be incurred under the limited warranty and record a liability in the amount of such anticipated costs at the time product revenue is recognized. Factors that affect our warranty liability include sales volumes along with historical and anticipated future rates of warranty claims.

Changes in the accrued product warranty costs during the quarters ended March 31, 2012 and March 26, 2011 are summarized as follows (in thousands):

	Quarter Ended
	March 31, 2012			March 26, 2011
Balance, beginning of period	$	1,263		$	1,588
Accruals for products sold		792			756
Warranty claims		(834	)		(773	)
Balance, end of period	$	1,221		$	1,571