Product Warranties (Tables)

3 Months Ended

Mar. 31, 2014

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability

Changes in our product warranty obligations were as follows (in thousands):

	Three months ended March 31,
	2014			2013
Balance, beginning of period	$	1,638		$	2,492
Accruals	921			653
Adjustments	—			—
Payments	(576		)	(535		)
Balance, end of period	$	1,983		$	2,610