Product Warranty (Tables)

9 Months Ended

Sep. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

The following table summarizes the change in product warranty liability during the nine months ended September 30, 2013 (in thousands):

	Nine months ended
	September 30, 2013
Beginning balance		$1,006
Cost of warranty claims	(180		)
Accruals for product warranties	36
Total		$862