Product Warranties (Tables)

9 Months Ended

Sep. 30, 2013

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

Changes in our product Warranty Obligations were as follows (in thousands):

	Nine months ended September 30,
	2013			2012
Balance, beginning of period	$	2,492		$	2,017
Payments	(1,416		)	(1,428		)
Adjustments	(186		)	(171		)
Accruals	951			1,645
Balance, end of period	$	1,841		$	2,063