Product Warranty

3 Months Ended

Mar. 31, 2012

Product Warranty [Abstract]

Product Warranty

3.	Product Warranty
	In general, the Company warrants its products to be free from defects in material and workmanship and will fully conform to and perform to specifications for a period of one year. The following table presents changes in the Company's warranty liability for the three months ended March 31, 2012 and the year ended December 31, 2011:

	March 31, 2012			December 31, 2011
Beginning balance	$	82		$	105
Warranty expense		—			27
Closed warranty claims		(9	)		(50	)
Ending balance	$	73		$	82