Liability for Warranty Returns (Tables)

9 Months Ended

Sep. 30, 2013

Product Warranties Disclosures [Abstract]

Summary of Warranty Expense and Write-Off Activity

A summary of warranty expense and write-off activity for the nine months ended September 30, 2013 and 2012 is as follows:

	Nine Months Ended September 30,
	2013			2012
(In thousands)
Balance at beginning of period	$	9,653		$	4,118
Plus: Amounts charged to cost and expenses		2,078			3,910
Amounts assumed on acquisition		—			1,932
Less: Deductions		(3,120	)		(2,709	)
Balance at end of period	$	8,611		$	7,251