Warranty Accrual (Tables)

6 Months Ended

Jun. 30, 2012

Warranty Accrual Activity

The table set forth below summarizes warranty accrual activity for the three and six months ended June 30, 2012 and 2011.

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
				(Dollars in thousands)
Balance at beginning of period	$	25,076		$	33,615		$	25,525		$	34,704
Expense provisions		878			1,034			1,643			1,875
Cash payments		(1,918	)		(1,617	)		(3,132	)		(3,116	)
Adjustments		—			(1,832	)		—			(2,263	)
Balance at end of period	$	24,036		$	31,200		$	24,036		$	31,200