Accrued Warranty Costs (Tables)

9 Months Ended

Sep. 30, 2015

Guarantees [Abstract]

Changes in Product Warranty Obligation (Accrued Warranty Costs)

Changes in our product warranty obligation (accrued warranty costs) are as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
	(In Thousands)
Balance at beginning of period	$	9,596		$	7,701		$	8,817		$	7,297
Amounts charged to SG&A		2,372			1,926			6,892			5,621
Costs incurred		(1,839	)		(1,458	)		(5,580	)		(4,749	)
Balance at end of period	$	10,129		$	8,169		$	10,129		$	8,169