Liability for Warranty Returns (Tables)

6 Months Ended

Jun. 30, 2016

Product Warranties Disclosures [Abstract]

Summary of Warranty Expense and Write-Off Activity

A summary of warranty expense and write-off activity for the three and six months ended June 30, 2016 and 2015 is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In thousands)	2016			2015			2016			2015
Balance at beginning of period	$	9,042		$	8,684		$	8,739		$	8,415
Plus:Amounts charged to cost and expenses		1,431			667			2,329			1,128
Less:Deductions		(1,538	)		(418	)		(2,133	)		(610	)
Balance at end of period	$	8,935		$	8,933		$	8,935		$	8,933