Warranty (Tables)

3 Months Ended

Mar. 31, 2013

Warranty [Abstract]

Changes in product warranty accrual

The following table provides the changes in the product warranty accrual for the three-month period ended March 31, 2013 (in thousands):

	Amount
Beginning Balance – December 31, 2012	$	1,212
Add: Accruals for warranties issued during the period		901
Less: Settlements made during the period		(1,054	)
Ending Balance –March 31, 2013	$	1,059