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Product Warranty (Tables)

3 Months Ended

Jun. 30, 2011

Product Warranty

Schedule Of Product Warranty

	Three months ended
	June 30,
	2011	2010
Balance at beginning of period	$7,907	$6,431
Accruals for warranties during the period	(405)	2,305
Settlements during the period	(168)	(2,361)
Balance at end of period	$7,334	$6,375

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