Commitments And Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability

The following table reflects activity in the warranty accrual for the periods indicated:

	Three Months Ended March 31,
	2013			2012
	(In thousands)
Warranty Accrual Activity
Balance, Beginning of Period	$	24,030		$	24,004
Warranty Expense	8,556			7,441
Warranty Claims Paid	(7,678		)	(4,009		)
Balance, End of Period	$	24,908		$	27,436